preinst is in screen 4.0.3-14ubuntu8.
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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | #!/bin/sh
set -e
if [ "$1" = upgrade ]; then
if dpkg --compare-versions "$2" lt-nl 4.0.3-7 && \
dpkg --compare-versions "$2" gt 4.0.3-3; then
if ! test -L /tmp/.screen && test -d /tmp/.screen && test -n "`find /tmp/.screen -type p 2>/dev/null`"; then
ln -s /tmp/.screen /var/run/screen
fi
fi
fi
# Automatically added by dh_installinit
if [ "$1" = install ] || [ "$1" = upgrade ]; then
if [ -e "/etc/init.d/screen-cleanup" ] && [ ! -L "/etc/init.d/screen-cleanup" ]; then
if [ "`md5sum \"/etc/init.d/screen-cleanup\" | sed -e \"s/ .*//\"`" != \
"`dpkg-query -W -f='${Conffiles}' screen | sed -n -e \"\\\\' /etc/init.d/screen-cleanup '{s/ obsolete$//;s/.* //p}\"`" ]
then
echo "Obsolete conffile /etc/init.d/screen-cleanup has been modified by you, renaming to .dpkg-bak"
mv -f "/etc/init.d/screen-cleanup" "/etc/init.d/screen-cleanup.dpkg-bak"
else
rm -f "/etc/init.d/screen-cleanup"
fi
fi
fi
# End automatically added section
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