postrm is in libc6 2.23-0ubuntu3.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
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set -e
if [ "$1" = remove ]; then
if command -v suidunregister >/dev/null 2>&1 && [ -e /etc/suid.conf ]; then
if [ -x /usr/lib/pt_chown ]; then
suidunregister -s libc6 /usr/lib/pt_chown
elif [ -x /usr/libexec/pt_chown ]; then
suidunregister -s libc6 /usr/libexec/pt_chown
fi
fi
# When both the multiarch and the corresponding biarch packages are
# installed, removing the multiarch package will remove the dynamic
# linker. Recreate it in the postinst.
ARCH=${DPKG_MAINTSCRIPT_ARCH:-$(dpkg --print-architecture)}
case "${ARCH}" in
kfreebsd-i386 | s390 | powerpc)
target="/lib32/ld.so.1"
;;
i386 | sparc)
target="/lib32/ld-linux.so.2"
;;
*)
target="$(dpkg-query -L libc6-${ARCH} 2>/dev/null | grep -E '/lib.*/ld-[0-9.]+\.so$' || true)"
;;
esac
if [ -f "$target" ] && ! [ -f /lib64/ld-linux-x86-64.so.2 ] ; then
ln -sf ${target#$(dirname /lib64/ld-linux-x86-64.so.2)/} /lib64/ld-linux-x86-64.so.2
fi
fi
if [ "$1" = deconfigure ]; then
:; # blah, do something useful with ldso
fi
#if [ "$1" = purge ]; then
# update-rc.d mountkernfs remove > /dev/null
#fi
# We now use the multiarch triplet instead of the GNU triplet for the ld.so
# configuration file, in order to keep a stable path. Remove the old file.
case ${DPKG_MAINTSCRIPT_ARCH:-$(dpkg --print-architecture)} in
hurd-i386)
dpkg-maintscript-helper rm_conffile /etc/ld.so.conf.d/i486-gnu.conf 2.19-11~ libc0.3:hurd-i386 -- "$@"
dpkg-maintscript-helper rm_conffile /etc/ld.so.conf.d/i486-gnu-gnu.conf 2.19-11~ libc0.3:hurd-i386 -- "$@"
;;
i386)
dpkg-maintscript-helper rm_conffile /etc/ld.so.conf.d/i486-linux-gnu.conf 2.19-4~ libc6:i386 -- "$@"
dpkg-maintscript-helper rm_conffile /etc/ld.so.conf.d/i686-linux-gnu.conf 2.19-13~ libc6:i386 -- "$@"
;;
kfreebsd-i386)
dpkg-maintscript-helper rm_conffile /etc/ld.so.conf.d/i486-kfreebsd-gnu.conf 2.19-11~ libc0.1:kfreebsd-i386 -- "$@"
;;
esac
# Automatically added by dh_installdebconf
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
. /usr/share/debconf/confmodule
db_purge
fi
# End automatically added section
exit 0
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