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	Translation	Source string	Target string
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Cleaning up and Saving the Temporary System
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Cleaning
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	First, remove the currently installed documentation files to prevent them from ending up in the final system, and to save about 35 MB:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>rm -rf /usr/share/{info,man,doc}/*</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Second, on a modern Linux system, the libtool .la files are only useful for libltdl. No libraries in LFS are loaded by libltdl, and it's known that some .la files can cause BLFS package failures. Remove those files now:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>find /usr/{lib,libexec} -name \*.la -delete</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	The current system size is now about 3 GB, however the /tools directory is no longer needed. It uses about 1 GB of disk space. Delete it now:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>rm -rf /tools</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Backup
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	At this point the essential programs and libraries have been created and your current LFS system is in a good state. Your system can now be backed up for later reuse. In case of fatal failures in the subsequent chapters, it often turns out that removing everything and starting over (more carefully) is the best way to recover. Unfortunately, all the temporary files will be removed, too. To avoid spending extra time to redo something which has been done successfully, creating a backup of the current LFS system may prove useful.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	All the remaining steps in this section are optional. Nevertheless, as soon as you begin installing packages in <xref linkend="chapter-building-system"/>, the temporary files will be overwritten. So it may be a good idea to do a backup of the current system as described below.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	The following steps are performed from outside the chroot environment. That means you have to leave the chroot environment first before continuing. The reason for that is to get access to file system locations outside of the chroot environment to store/read the backup archive, which ought not be placed within the <filename class="directory">$LFS</filename> hierarchy.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	If you have decided to make a backup, leave the chroot environment:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>exit</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	All of the following instructions are executed by <systemitem class="username">root</systemitem> on your host system. Take extra care about the commands you're going to run as mistakes made here can modify your host system. Be aware that the environment variable <envar>LFS</envar> is set for user <systemitem class="username">lfs</systemitem> by default but may <emphasis>not</emphasis> be set for <systemitem class="username">root</systemitem>.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Whenever commands are to be executed by <systemitem class="username">root</systemitem>, make sure you have set <envar>LFS</envar>.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	This has been discussed in <xref linkend='ch-partitioning-aboutlfs' role='.'/>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Before making a backup, unmount the virtual file systems:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>mountpoint -q $LFS/dev/shm &amp;&amp; umount $LFS/dev/shm umount $LFS/dev/pts umount $LFS/{sys,proc,run,dev}</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Make sure you have at least 1 GB free disk space (the source tarballs will be included in the backup archive) on the file system containing the directory where you create the backup archive.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Note that the instructions below specify the home directory of the host system's <systemitem class="username">root</systemitem> user, which is typically found on the root file system. Replace <envar>$HOME</envar> by a directory of your choice if you do not want to have the backup stored in <systemitem class="username">root</systemitem>'s home directory.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Create the backup archive by running the following command:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Because the backup archive is compressed, it takes a relatively long time (over 10 minutes) even on a reasonably fast system.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<userinput>cd $LFS tar -cJpf $HOME/lfs-temp-tools-&version;.tar.xz .</userinput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	If continuing to chapter 8, don't forget to reenter the chroot environment as explained in the <quote>Important</quote> box below.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Restore
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	In case some mistakes have been made and you need to start over, you can use this backup to restore the system and save some recovery time. Since the sources are located under <filename class="directory">$LFS</filename>, they are included in the backup archive as well, so they do not need to be downloaded again. After checking that <envar>$LFS</envar> is set properly, you can restore the backup by executing the following commands:
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	The following commands are extremely dangerous. If you run <command>rm -rf ./*</command> as the &root; user and you do not change to the $LFS directory or the <envar>LFS</envar> environment variable is not set for the &root; user, it will destroy your entire host system. YOU ARE WARNED.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	<computeroutput>cd $LFS rm -rf ./* tar -xpf $HOME/lfs-temp-tools-&version;.tar.xz</computeroutput>
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	Again, double check that the environment has been set up properly and continue building the rest of the system.
	Linux From Scratch 12.3/chapter07_cleanup — Chinese (Simplified Han script)	If you left the chroot environment to create a backup or restart building using a restore, remember to check that the virtual file systems are still mounted (<command>findmnt | grep $LFS</command>). If they are not mounted, remount them now as described in <xref linkend='ch-tools-kernfs'/> and re-enter the chroot environment (see <xref linkend='ch-tools-chroot'/>) before continuing.