%general-entities; ]> Finally, clean up some extra files left around from running tests: rm -rf /tmp/* Now log out and reenter the chroot environment with an updated chroot command. From now on, use this updated chroot command any time you need to reenter the chroot environment after exiting: logout chroot "$LFS" /usr/bin/env -i \ HOME=/root TERM="$TERM" \ PS1='(lfs chroot) \u:\w\$ ' \ PATH=/bin:/usr/bin:/sbin:/usr/sbin \ /bin/bash --login The reason for this is that the programs in /tools are no longer needed. For this reason you can delete the /tools directory if so desired. Removing /tools will also remove the temporary copies of Tcl, Expect, and DejaGNU which were used for running the toolchain tests. If you need these programs later on, they will need to be recompiled and re-installed. The BLFS book has instructions for this (see ). If the virtual kernel file systems have been unmounted, either manually or through a reboot, ensure that the virtual kernel file systems are mounted when reentering the chroot. This process was explained in and . There were several static libraries that were not suppressed earlier in the chapter in order to satisfy the regression tests in several packages. These libraries are from binutils, bzip2, e2fsprogs, flex, libtool, and zlib. If desired, remove them now: rm -f /usr/lib/lib{bfd,opcodes}.a rm -f /usr/lib/libctf{,-nobfd}.a rm -f /usr/lib/libbz2.a rm -f /usr/lib/lib{com_err,e2p,ext2fs,ss}.a rm -f /usr/lib/libltdl.a rm -f /usr/lib/libfl.a rm -f /usr/lib/libz.a There are also several files installed in the /usr/lib and /usr/libexec directories with a file name extention of .la. These are "libtool archive" files. As already said, they are only useful when linking with static libraries. They are unneeded, and potentially harmful, when using dynamic shared libraries, specially when using also non-autotools build systems. To remove them, run: find /usr/lib /usr/libexec -name \*.la -delete find /usr/lib{,32} /usr/libexec -name \*.la -delete find /usr/lib{,x32} /usr/libexec -name \*.la -delete find /usr/lib{,{,x}32} /usr/libexec -name \*.la -delete For more information about libtool archive files, see the BLFS section "About Libtool Archive (.la) files". Finally, remove the temporary 'tester' usr account created at the beginning of this chapter. sed -i '/tester/d' /etc/passwd /etc/group rm -rf /home/tester