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	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Package Management
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Package Management is an often requested addition to the LFS Book. A Package Manager tracks the installation of files, making it easier to remove and upgrade packages. A good package manager will also handle the configuration files specially to keep the user configuration when the package is reinstalled or upgraded. Before you begin to wonder, NO—this section will not talk about nor recommend any particular package manager. What it does provide is a roundup of the more popular techniques and how they work. The perfect package manager for you may be among these techniques, or it may be a combination of two or more of these techniques. This section briefly mentions issues that may arise when upgrading packages.	经常有人请求将软件包管理加入 LFS 手册。包管理器可以跟踪文件的安装过程，简化移除或升级软件包的工作。如同处理二进制程序和库文件一样，包管理器也会处理配置文件的安装过程。在您开始想入非非前，不 —— 本节不会讨论或者推荐任何一个特定的包管理器。本节对软件包管理的流行技术及其工作原理进行综述。对您来说，完美的包管理器可能是其中的某个技术，也可能是几个技术的结合。本节还会简要介绍在升级软件包时可能遇到的问题。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Package Management is an often requested addition to the LFS Book. A Package Manager tracks the installation of files, making it easier to remove and upgrade packages. A good package manager will also handle the configuration files specially to keep the user configuration when the package is reinstalled or upgraded. Before you begin to wonder, NO—this section will not talk about nor recommend any particular package manager. What it does provide is a roundup of the more popular techniques and how they work. The perfect package manager for you may be among these techniques, or it may be a combination of two or more of these techniques. This section briefly mentions issues that may arise when upgrading packages.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Some reasons why no package manager is mentioned in LFS or BLFS include:
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Dealing with package management takes the focus away from the goals of these books—teaching how a Linux system is built.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	There are multiple solutions for package management, each having its strengths and drawbacks. Finding one solution that satisfies all audiences is difficult.	存在多种软件包管理的解决方案，它们各有优缺点。很难找到一种让所有读者满意的方案。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	There are multiple solutions for package management, each having its strengths and drawbacks. Finding one solution that satisfies all audiences is difficult.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	There are some hints written on the topic of package management. Visit the <ulink url="&hints-root;">Hints Project</ulink> and see if one of them fits your needs.	已经有人写了一些关于软件包管理这一主题的短文。您可以访问 <ulink url="&hints-root;">Hints Project</ulink> 并看一看是否有符合您的需求的方案。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	There are some hints written on the topic of package management. Visit the <ulink url="&hints-root;">Hints Project</ulink> and see if one of them fits your needs.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Upgrade Issues
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	A Package Manager makes it easy to upgrade to newer versions when they are released. Generally the instructions in the LFS and BLFS books can be used to upgrade to the newer versions. Here are some points that you should be aware of when upgrading packages, especially on a running system.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If the Linux kernel needs to be upgraded (for example, from 5.10.17 to 5.10.18 or 5.11.1), nothing else needs to be rebuilt. The system will keep working fine thanks to the well-defined interface between the kernel and userspace. Specifically, Linux API headers need not be upgraded along with the kernel. You will merely need to reboot your system to use the upgraded kernel.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If the Linux kernel needs to be upgraded (for example, from 5.10.17 to 5.10.18 or 5.11.1), nothing else needs to be rebuilt. The system will keep working fine thanks to the well-defined interface between the kernel and userspace. Specifically, Linux API headers need not be upgraded along with the kernel. You will merely need to reboot your system to use the upgraded kernel.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If Glibc needs to be upgraded to a newer version, (e.g., from Glibc-2.36 to Glibc-&glibc-version;), some extra steps are needed to avoid breaking the system. Read <xref linkend='ch-system-glibc'/> for details.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If Glibc needs to be upgraded to a newer version, (e.g., from Glibc-2.36 to Glibc-&glibc-version;), some extra steps are needed to avoid breaking the system. Read <xref linkend='ch-system-glibc'/> for details.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If a package containing a shared library is updated, and if the name of the library changes, then any packages dynamically linked to the library must be recompiled, to link against the newer library. (Note that there is no correlation between the package version and the name of the library.) For example, consider a package foo-1.2.3 that installs a shared library with the name <filename class='libraryfile'>libfoo.so.1</filename>. Suppose you upgrade the package to a newer version foo-1.2.4 that installs a shared library with the name <filename class='libraryfile'>libfoo.so.2</filename>. In this case, any packages that are dynamically linked to <filename class='libraryfile'>libfoo.so.1</filename> need to be recompiled to link against <filename class='libraryfile'>libfoo.so.2</filename> in order to use the new library version. You should not remove the old libraries until all the dependent packages have been recompiled.	如果更新了一个包含共享库的软件包，而且共享库的名称发生改变，那么所有动态链接到这个库的软件包都需要重新编译，以链接到新版本的库。(注意软件包的版本和共享库的名称没有关系。) 例如，考虑一个软件包 foo-1.2.3 安装了名为 <filename class='libraryfile'>libfoo.so.1</filename> 的共享库，如果您把该软件包升级到了新版本 foo-1.2.4，它安装了名为 <filename class='libraryfile'>libfoo.so.2</filename> 的共享库。那么，所有链接到 <filename class='libraryfile'>libfoo.so.1</filename> 的软件包都要重新编译以链接到 <filename class='libraryfile'>libfoo.so.2</filename>。注意，您不能删除旧版本的库，直到将所有依赖它的软件包都重新编译完成。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If a package containing a shared library is updated, and if the name of the library changes, then any packages dynamically linked to the library must be recompiled, to link against the newer library. (Note that there is no correlation between the package version and the name of the library.) For example, consider a package foo-1.2.3 that installs a shared library with the name <filename class='libraryfile'>libfoo.so.1</filename>. Suppose you upgrade the package to a newer version foo-1.2.4 that installs a shared library with the name <filename class='libraryfile'>libfoo.so.2</filename>. In this case, any packages that are dynamically linked to <filename class='libraryfile'>libfoo.so.1</filename> need to be recompiled to link against <filename class='libraryfile'>libfoo.so.2</filename> in order to use the new library version. You should not remove the old libraries until all the dependent packages have been recompiled.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If a package is (directly or indirectly) linked to both the old and new names of a shared library (for example, the package links to both <filename class='libraryfile'>libfoo.so.2</filename> and <filename class='libraryfile'>libbar.so.1</filename>, while the latter links to <filename class='libraryfile'>libfoo.so.3</filename>), the package may malfunction because the different revisions of the shared library present incompatible definitions for some symbol names. This can be caused by recompiling some, but not all, of the packages linked to the old shared library after the package providing the shared library is upgraded. To avoid the issue, users will need to rebuild every package linked to a shared library with an updated revision (e.g. libfoo.so.2 to libfoo.so.3) as soon as possible.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If a package is (directly or indirectly) linked to both the old and new names of a shared library (for example, the package links to both <filename class='libraryfile'>libfoo.so.2</filename> and <filename class='libraryfile'>libbar.so.1</filename>, while the latter links to <filename class='libraryfile'>libfoo.so.3</filename>), the package may malfunction because the different revisions of the shared library present incompatible definitions for some symbol names. This can be caused by recompiling some, but not all, of the packages linked to the old shared library after the package providing the shared library is upgraded. To avoid the issue, users will need to rebuild every package linked to a shared library with an updated revision (e.g. libfoo.so.2 to libfoo.so.3) as soon as possible.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If a package containing a shared library is updated, and the name of the library doesn't change, but the version number of the library <emphasis role="bold">file</emphasis> decreases (for example, the library is still named <filename class='libraryfile'>libfoo.so.1</filename>, but the name of the library file is changed from <filename class='libraryfile'>libfoo.so.1.25</filename> to <filename class='libraryfile'>libfoo.so.1.24</filename>), you should remove the library file from the previously installed version (<filename class='libraryfile'>libfoo.so.1.25</filename> in this case). Otherwise, a <command>ldconfig</command> command (invoked by yourself from the command line, or by the installation of some package) will reset the symlink <filename class='libraryfile'>libfoo.so.1</filename> to point to the old library file because it seems to be a <quote>newer</quote> version; its version number is larger. This situation may arise if you have to downgrade a package, or if the authors change the versioning scheme for library files.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If a package containing a shared library is updated, and the name of the library doesn't change, but the version number of the library <emphasis role="bold">file</emphasis> decreases (for example, the library is still named <filename class='libraryfile'>libfoo.so.1</filename>, but the name of the library file is changed from <filename class='libraryfile'>libfoo.so.1.25</filename> to <filename class='libraryfile'>libfoo.so.1.24</filename>), you should remove the library file from the previously installed version (<filename class='libraryfile'>libfoo.so.1.25</filename> in this case). Otherwise, a <command>ldconfig</command> command (invoked by yourself from the command line, or by the installation of some package) will reset the symlink <filename class='libraryfile'>libfoo.so.1</filename> to point to the old library file because it seems to be a <quote>newer</quote> version; its version number is larger. This situation may arise if you have to downgrade a package, or if the authors change the versioning scheme for library files.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If a package containing a shared library is updated, and the name of the library doesn't change, but a severe issue (especially, a security vulnerability) is fixed, all running programs linked to the shared library should be restarted. The following command, run as <systemitem class="username">root</systemitem> after the update is complete, will list which processes are using the old versions of those libraries (replace <replaceable>libfoo</replaceable> with the name of the library):
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If a package containing a shared library is updated, and the name of the library doesn't change, but a severe issue (especially, a security vulnerability) is fixed, all running programs linked to the shared library should be restarted. The following command, run as <systemitem class="username">root</systemitem> after the update is complete, will list which processes are using the old versions of those libraries (replace <replaceable>libfoo</replaceable> with the name of the library):
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	<userinput>grep -l '<replaceable>libfoo</replaceable>.*deleted' /proc/*/maps | tr -cd 0-9\\n | xargs -r ps u</userinput>
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	<userinput>grep -l '<replaceable>libfoo</replaceable>.*deleted' /proc/*/maps | tr -cd 0-9\\n | xargs -r ps u</userinput>
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If <application>OpenSSH</application> is being used to access the system and it is linked to the updated library, you must restart the <command>sshd</command> service, then logout, login again, and run the preceding command again to confirm that nothing is still using the deleted libraries.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If <application>OpenSSH</application> is being used to access the system and it is linked to the updated library, you must restart the <command>sshd</command> service, then logout, login again, and run the preceding command again to confirm that nothing is still using the deleted libraries.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If the <command>systemd</command> daemon (running as PID 1) is linked to the updated library, you can restart it without rebooting by running <command>systemctl daemon-reexec</command> as the <systemitem class='username'>root</systemitem> user.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If the <command>systemd</command> daemon (running as PID 1) is linked to the updated library, you can restart it without rebooting by running <command>systemctl daemon-reexec</command> as the <systemitem class='username'>root</systemitem> user.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	If an executable program or a shared library is overwritten, the processes using the code or data in that program or library may crash. The correct way to update a program or a shared library without causing the process to crash is to remove it first, then install the new version. The <command>install</command> command provided by <application>coreutils</application> has already implemented this, and most packages use that command to install binary files and libraries. This means that you won't be troubled by this issue most of the time. However, the install process of some packages (notably SpiderMonkey in BLFS) just overwrites the file if it exists; this causes a crash. So it's safer to save your work and close unneeded running processes before updating a package.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	If an executable program or a shared library is overwritten, the processes using the code or data in that program or library may crash. The correct way to update a program or a shared library without causing the process to crash is to remove it first, then install the new version. The <command>install</command> command provided by <application>coreutils</application> has already implemented this, and most packages use that command to install binary files and libraries. This means that you won't be troubled by this issue most of the time. However, the install process of some packages (notably SpiderMonkey in BLFS) just overwrites the file if it exists; this causes a crash. So it's safer to save your work and close unneeded running processes before updating a package.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Package Management Techniques
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	The following are some common package management techniques. Before making a decision on a package manager, do some research on the various techniques, particularly the drawbacks of each particular scheme.	以下是几种常见的软件包管理技术。在决定使用某种包管理器前，请研读这些技术，特别是要了解特定技术的不足。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	The following are some common package management techniques. Before making a decision on a package manager, do some research on the various techniques, particularly the drawbacks of each particular scheme.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	It is All in My Head!
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Yes, this is a package management technique. Some folks do not need a package manager because they know the packages intimately and know which files are installed by each package. Some users also do not need any package management because they plan on rebuilding the entire system whenever a package is changed.	没错，这是一种包管理技术。有些人觉得不需要管理软件包，因为他们十分了解软件包，知道每个软件包安装了什么文件。有的用户则计划每次有软件包发生变动时就重新构建系统，所以不需要管理软件包。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Yes, this is a package management technique. Some folks do not need a package manager because they know the packages intimately and know which files are installed by each package. Some users also do not need any package management because they plan on rebuilding the entire system whenever a package is changed.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Install in Separate Directories
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	This is a simplistic package management technique that does not need a special program to manage the packages. Each package is installed in a separate directory. For example, package foo-1.1 is installed in <filename class='directory'>/opt/foo-1.1</filename> and a symlink is made from <filename>/opt/foo</filename> to <filename class='directory'>/opt/foo-1.1</filename>. When a new version foo-1.2 comes along, it is installed in <filename class='directory'>/opt/foo-1.2</filename> and the previous symlink is replaced by a symlink to the new version.	这是一种最简单的软件包管理方式，它不需要任何额外的软件来控制软件包的安装。每个软件包都被安装在单独的目录中。例如，软件包 foo-1.1 将会被安装在 <filename class='directory'>/usr/pkg/foo-1.1</filename>，然后创建一个符号链接 <filename>/usr/pkg/foo</filename> 指向 <filename class='directory'>/usr/pkg/foo-1.1</filename>。在安装新版本 foo-1.2 的时候，把它安装到 <filename class='directory'>/usr/pkg/foo-1.2</filename>，然后把之前的符号链接替换为指向新版本的符号链接。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	This is a simplistic package management technique that does not need a special program to manage the packages. Each package is installed in a separate directory. For example, package foo-1.1 is installed in <filename class='directory'>/opt/foo-1.1</filename> and a symlink is made from <filename>/opt/foo</filename> to <filename class='directory'>/opt/foo-1.1</filename>. When a new version foo-1.2 comes along, it is installed in <filename class='directory'>/opt/foo-1.2</filename> and the previous symlink is replaced by a symlink to the new version.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Environment variables such as <envar>PATH</envar>, <envar>MANPATH</envar>, <envar>INFOPATH</envar>, <envar>PKG_CONFIG_PATH</envar>, <envar>CPPFLAGS</envar>, <envar>LDFLAGS</envar>, and the configuration file <filename>/etc/ld.so.conf</filename> may need to be expanded to include the corresponding subdirectories in <filename class='directory'>/opt/foo-x.y</filename>.	<envar>PATH</envar>、<envar>LD_LIBRARY_PATH</envar>、<envar>MANPATH</envar>、<envar>INFOPATH</envar> 和 <envar>CPPFLAGS</envar> 等环境变量需要被扩充，以包含 <filename>/usr/pkg/foo</filename>。一旦软件包的数量较多，这种架构就会变得无法管理。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Environment variables such as <envar>PATH</envar>, <envar>MANPATH</envar>, <envar>INFOPATH</envar>, <envar>PKG_CONFIG_PATH</envar>, <envar>CPPFLAGS</envar>, <envar>LDFLAGS</envar>, and the configuration file <filename>/etc/ld.so.conf</filename> may need to be expanded to include the corresponding subdirectories in <filename class='directory'>/opt/foo-x.y</filename>.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	This scheme is used by the BLFS book to install some very large packages to make it easier to upgrade them. If you install more than a few packages, this scheme becomes unmanageable. And some packages (for example Linux API headers and Glibc) may not work well with this scheme. <emphasis role='bold'>Never use this scheme system-wide.</emphasis>
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	This scheme is used by the BLFS book to install some very large packages to make it easier to upgrade them. If you install more than a few packages, this scheme becomes unmanageable. And some packages (for example Linux API headers and Glibc) may not work well with this scheme. <emphasis role='bold'>Never use this scheme system-wide.</emphasis>
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Symlink Style Package Management
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	This is a variation of the previous package management technique. Each package is installed as in the previous scheme. But instead of making the symlink via a generic package name, each file is symlinked into the <filename class='directory'>/usr</filename> hierarchy. This removes the need to expand the environment variables. Though the symlinks can be created by the user, many package managers use this approach, and automate the creation of the symlinks. A few of the popular ones include Stow, Epkg, Graft, and Depot.	这是前一种软件包管理技术的变种。和前一种方式一样，将各个软件包同样安装在独立的目录中。但不是建立目录的符号链接，而是把其中的每个文件符号链接到 <filename class='directory'>/usr</filename> 目录树中对应的位置。这样就不需要修改环境变量。虽然这些符号链接可以由用户自己创建，但已经有许多包管理器能够自动化这一过程。一些流行的包管理器如 Stow、Epkg、Graft 和 Depot 使用这种管理方式。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	This is a variation of the previous package management technique. Each package is installed as in the previous scheme. But instead of making the symlink via a generic package name, each file is symlinked into the <filename class='directory'>/usr</filename> hierarchy. This removes the need to expand the environment variables. Though the symlinks can be created by the user, many package managers use this approach, and automate the creation of the symlinks. A few of the popular ones include Stow, Epkg, Graft, and Depot.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	The installation script needs to be fooled, so the package thinks it is installed in <filename class="directory">/usr</filename> though in reality it is installed in the <filename class="directory">/usr/pkg</filename> hierarchy. Installing in this manner is not usually a trivial task. For example, suppose you are installing a package libfoo-1.1. The following instructions may not install the package properly:	安装过程需要伪装，使得软件包认为它处于 <filename class="directory">/usr</filename> 中，尽管它实际上被安装在 <filename class="directory">/usr/pkg</filename> 目录结构中。这种安装过程一般是超出常规的。例如，考虑安装软件包 libfoo-1.1。下面的指令可能不能正确安装该软件包：
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	The installation script needs to be fooled, so the package thinks it is installed in <filename class="directory">/usr</filename> though in reality it is installed in the <filename class="directory">/usr/pkg</filename> hierarchy. Installing in this manner is not usually a trivial task. For example, suppose you are installing a package libfoo-1.1. The following instructions may not install the package properly:
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	<userinput>./configure --prefix=/usr/pkg/libfoo/1.1 make make install</userinput>
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	The installation will work, but the dependent packages may not link to libfoo as you would expect. If you compile a package that links against libfoo, you may notice that it is linked to <filename class='libraryfile'>/usr/pkg/libfoo/1.1/lib/libfoo.so.1</filename> instead of <filename class='libraryfile'>/usr/lib/libfoo.so.1</filename> as you would expect. The correct approach is to use the <envar>DESTDIR</envar> variable to direct the installation. This approach works as follows:	尽管安装过程本身可以顺利进行，但依赖于它的软件包可能不会像您期望的那样链接 libfoo 库。如果要编译一个依赖于 libfoo 的软件包，您可能发现它链接到了 <filename class='libraryfile'>/usr/pkg/libfoo/1.1/lib/libfoo.so.1</filename> 而不是您期望的 <filename class='libraryfile'>/usr/lib/libfoo.so.1</filename>。正确的做法是使用 <envar>DESTDIR</envar> 策略伪装软件包的安装过程。就像下面这样做：
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	The installation will work, but the dependent packages may not link to libfoo as you would expect. If you compile a package that links against libfoo, you may notice that it is linked to <filename class='libraryfile'>/usr/pkg/libfoo/1.1/lib/libfoo.so.1</filename> instead of <filename class='libraryfile'>/usr/lib/libfoo.so.1</filename> as you would expect. The correct approach is to use the <envar>DESTDIR</envar> variable to direct the installation. This approach works as follows:
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	<userinput>./configure --prefix=/usr make make DESTDIR=/usr/pkg/libfoo/1.1 install</userinput>
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Most packages support this approach, but there are some which do not. For the non-compliant packages, you may either need to install the package manually, or you may find that it is easier to install some problematic packages into <filename class='directory'>/opt</filename>.	多数软件包可以这样安装，但有些不能。对于那些不兼容的软件包，您要么亲自动手安装，要么更简单地把一些出问题的软件包安装在 <filename class='directory'>/opt</filename>中。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Most packages support this approach, but there are some which do not. For the non-compliant packages, you may either need to install the package manually, or you may find that it is easier to install some problematic packages into <filename class='directory'>/opt</filename>.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Timestamp Based
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	In this technique, a file is timestamped before the installation of the package. After the installation, a simple use of the <command>find</command> command with the appropriate options can generate a log of all the files installed after the timestamp file was created. A package manager that uses this approach is install-log.	在这种技巧中，安装一个软件包之前，为它创建一个时间戳文件。在安装后，用一行简单的 <command>find</command> 命令，加上正确的参数，就能生成安装日志，包含在时间戳文件创建以后安装的所有文件。有一个采用这个方案的包管理器叫做 install-log。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	In this technique, a file is timestamped before the installation of the package. After the installation, a simple use of the <command>find</command> command with the appropriate options can generate a log of all the files installed after the timestamp file was created. A package manager that uses this approach is install-log.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Though this scheme has the advantage of being simple, it has two drawbacks. If, during installation, the files are installed with any timestamp other than the current time, those files will not be tracked by the package manager. Also, this scheme can only be used when packages are installed one at a time. The logs are not reliable if two packages are installed simultaneously from two different consoles.	尽管这种方式很简单，但它有两个缺点。如果在安装过程中，某些文件没有以当前时间作为时间戳安装，它们就不能被包管理器跟踪。另外，只有每次只安装一个软件包时才能使用这种技术。如果在两个终端中同时安装两个不同的软件包，它们的安装日志就不可靠了。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Though this scheme has the advantage of being simple, it has two drawbacks. If, during installation, the files are installed with any timestamp other than the current time, those files will not be tracked by the package manager. Also, this scheme can only be used when packages are installed one at a time. The logs are not reliable if two packages are installed simultaneously from two different consoles.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Tracing Installation Scripts
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	In this approach, the commands that the installation scripts perform are recorded. There are two techniques that one can use:
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	The <envar>LD_PRELOAD</envar> environment variable can be set to point to a library to be preloaded before installation. During installation, this library tracks the packages that are being installed by attaching itself to various executables such as <command>cp</command>, <command>install</command>, <command>mv</command> and tracking the system calls that modify the filesystem. For this approach to work, all the executables need to be dynamically linked without the suid or sgid bit. Preloading the library may cause some unwanted side-effects during installation. Therefore, it's a good idea to perform some tests to ensure that the package manager does not break anything, and that it logs all the appropriate files.	在安装前设置 <envar>LD_PRELOAD</envar> 环境变量，将其指向一个库以在安装过程中预加载它。在安装过程中，这个库附加在 <command>cp</command>、<command>install</command>、<command>mv</command> 等可执行文件上，跟踪修改文件系统的系统调用。如果要使用这种方法，所有需要跟踪的可执行文件必须是动态链接的，且没有设定 suid 和 sgid 位。预加载动态库可能在安装过程中导致不希望的副作用。因此，建议在实际使用前进行一些测试，以确保包管理器不会造成破坏，并且记录了所有应该记录的文件。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	The <envar>LD_PRELOAD</envar> environment variable can be set to point to a library to be preloaded before installation. During installation, this library tracks the packages that are being installed by attaching itself to various executables such as <command>cp</command>, <command>install</command>, <command>mv</command> and tracking the system calls that modify the filesystem. For this approach to work, all the executables need to be dynamically linked without the suid or sgid bit. Preloading the library may cause some unwanted side-effects during installation. Therefore, it's a good idea to perform some tests to ensure that the package manager does not break anything, and that it logs all the appropriate files.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Another technique is to use <command>strace</command>, which logs all the system calls made during the execution of the installation scripts.	第二种技术是使用 <command>strace</command>，它能够记录安装脚本执行过程中的所有系统调用。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Another technique is to use <command>strace</command>, which logs all the system calls made during the execution of the installation scripts.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Creating Package Archives
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	In this scheme, the package installation is faked into a separate tree as previously described in the symlink style package management section. After the installation, a package archive is created using the installed files. This archive is then used to install the package on the local machine or even on other machines.	在这种架构中，软件包被伪装安装到一个独立的目录树中，就像软链接风格的软件包管理那样。在安装后，使用被安装的文件创建一个软件包档案。它可以被用来在本地机器甚至其他机器上安装该软件包。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	In this scheme, the package installation is faked into a separate tree as previously described in the symlink style package management section. After the installation, a package archive is created using the installed files. This archive is then used to install the package on the local machine or even on other machines.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	This approach is used by most of the package managers found in the commercial distributions. Examples of package managers that follow this approach are RPM (which, incidentally, is required by the <ulink url="https://refspecs.linuxfoundation.org/lsb.shtml">Linux Standard Base Specification</ulink>), pkg-utils, Debian's apt, and Gentoo's Portage system. A hint describing how to adopt this style of package management for LFS systems is located at <ulink url="&hints-root;fakeroot.txt"/>.	大多数商业发行版的包管理器采用这种策略。例如 RPM (值得一提的是，它被 <ulink url="http://refspecs.linuxfoundation.org/lsb.shtml">Linux Standard Base 规则</ulink>所要求)、pkg-utils、Debian 的 apt，以及 Gentoo 的 Portage 系统等。LFS Hint 中的一篇短文描述了如何为 LFS 系统适用这种管理方式：<ulink url="&hints-root;fakeroot.txt"/>。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	This approach is used by most of the package managers found in the commercial distributions. Examples of package managers that follow this approach are RPM (which, incidentally, is required by the <ulink url="https://refspecs.linuxfoundation.org/lsb.shtml">Linux Standard Base Specification</ulink>), pkg-utils, Debian's apt, and Gentoo's Portage system. A hint describing how to adopt this style of package management for LFS systems is located at <ulink url="&hints-root;fakeroot.txt"/>.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	The creation of package files that include dependency information is complex, and beyond the scope of LFS.	创建包含依赖关系信息的软件包文件十分复杂，超出了 LFS 的范畴。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	The creation of package files that include dependency information is complex, and beyond the scope of LFS.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Slackware uses a <command>tar</command>-based system for package archives. This system purposely does not handle package dependencies as more complex package managers do. For details of Slackware package management, see <ulink url="https://www.slackbook.org/html/package-management.html"/>.	Slackware 使用一个基于 <command>tar</command> 的系统创建软件包档案。和更复杂的包管理器不同，该系统有意地没有涉及软件包依赖关系。如果想了解 Slackware 包管理器的详细信息，阅读 <ulink url="http://www.slackbook.org/html/package-management.html"/>。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Slackware uses a <command>tar</command>-based system for package archives. This system purposely does not handle package dependencies as more complex package managers do. For details of Slackware package management, see <ulink url="https://www.slackbook.org/html/package-management.html"/>.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	User Based Management
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	This scheme, unique to LFS, was devised by Matthias Benkmann, and is available from the <ulink url="&hints-root;">Hints Project</ulink>. In this scheme, each package is installed as a separate user into the standard locations. Files belonging to a package are easily identified by checking the user ID. The features and shortcomings of this approach are too complex to describe in this section. For the details please see the hint at <ulink url="&hints-root;more_control_and_pkg_man.txt"/>.
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Deploying LFS on Multiple Systems
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	One of the advantages of an LFS system is that there are no files that depend on the position of files on a disk system. Cloning an LFS build to another computer with the same architecture as the base system is as simple as using <command>tar</command> on the LFS partition that contains the root directory (about 900MB uncompressed for a basic LFS build), copying that file via network transfer or CD-ROM / USB stick to the new system, and expanding it. After that, a few configuration files will have to be changed. Configuration files that may need to be updated include: <filename>/etc/hosts</filename>, <filename>/etc/fstab</filename>, <filename>/etc/passwd</filename>, <filename>/etc/group</filename>, <phrase revision="systemd"> <filename>/etc/shadow</filename>, and <filename>/etc/ld.so.conf</filename>. </phrase> <phrase revision="sysv"> <filename>/etc/shadow</filename>, <filename>/etc/ld.so.conf</filename>, <filename>/etc/sysconfig/rc.site</filename>, <filename>/etc/sysconfig/network</filename>, and <filename>/etc/sysconfig/ifconfig.eth0</filename>. </phrase>	LFS 系统的一项优势是，没有依赖于磁盘系统中文件位置的文件。将构建好的 LFS 系统复制到另一台具有相同硬件架构的计算机很简单，只要用 <command>tar</command> 命令把包含根目录的 LFS 分区打包 (未压缩的情况下，一个基本的 LFS 系统需要 250 MB)，然后通过网络或者 CD-ROM 复制到新的系统上，再展开即可。这时，个别配置文件需要修改。可能需要更新的配置文件有：<filename>/etc/hosts</filename>，<filename>/etc/fstab</filename>，<filename>/etc/passwd</filename>，<filename>/etc/group</filename>，<phrase revision="systemd"><filename>/etc/shadow</filename>，以及 <filename>/etc/ld.so.conf</filename>。</phrase><phrase revision="sysv"><filename>/etc/shadow</filename>，<filename>/etc/ld.so.conf</filename>，<filename>/etc/sysconfig/rc.site</filename>，<filename>/etc/sysconfig/network</filename>，以及 <filename>/etc/sysconfig/ifconfig.eth0</filename>。</phrase>
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	One of the advantages of an LFS system is that there are no files that depend on the position of files on a disk system. Cloning an LFS build to another computer with the same architecture as the base system is as simple as using <command>tar</command> on the LFS partition that contains the root directory (about 900MB uncompressed for a basic LFS build), copying that file via network transfer or CD-ROM / USB stick to the new system, and expanding it. After that, a few configuration files will have to be changed. Configuration files that may need to be updated include: <filename>/etc/hosts</filename>, <filename>/etc/fstab</filename>, <filename>/etc/passwd</filename>, <filename>/etc/group</filename>, <phrase revision="systemd"> <filename>/etc/shadow</filename>, and <filename>/etc/ld.so.conf</filename>. </phrase> <phrase revision="sysv"> <filename>/etc/shadow</filename>, <filename>/etc/ld.so.conf</filename>, <filename>/etc/sysconfig/rc.site</filename>, <filename>/etc/sysconfig/network</filename>, and <filename>/etc/sysconfig/ifconfig.eth0</filename>. </phrase>
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	A custom kernel may be needed for the new system, depending on differences in system hardware and the original kernel configuration.	由于系统硬件和原始内核配置的区别，可能需要为新系统重新配置并构建内核。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	A custom kernel may be needed for the new system, depending on differences in system hardware and the original kernel configuration.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	There have been some reports of issues when copying between similar but not identical architectures. For instance, the instruction set for an Intel system is not identical with the AMD processor's instructions, and later versions of some processors may provide instructions that are unavailable with earlier versions.	有一些报告反映称，在架构相近但不完全一致的计算机之间拷贝 LFS 系统时出现问题。例如，Intel 系统使用的指令集和 AMD 处理器不完全相同，且较新的处理器可能包含旧处理器没有的指令。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	There have been some reports of issues when copying between similar but not identical architectures. For instance, the instruction set for an Intel system is not identical with the AMD processor's instructions, and later versions of some processors may provide instructions that are unavailable with earlier versions.
	Linux From Scratch 12.2/chapter08_pkgmgt — Chinese (Simplified Han script)	Finally, the new system has to be made bootable via <xref linkend="ch-bootable-grub"/>.	最后，按照<xref linkend="ch-bootable-grub"/>中的说明，为新系统配置引导加载器。
	Linux From Scratch 12.2/chapter08_pkgmgt — Spanish	Finally, the new system has to be made bootable via <xref linkend="ch-bootable-grub"/>.