postinst is in plymouth-theme-ubuntu-mate-text 18.04.11.
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 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | #!/bin/sh -e
# This script can be called in the following ways:
#
# After the package was installed:
# <postinst> configure <old-version>
#
#
# If prerm fails during upgrade or fails on failed upgrade:
# <old-postinst> abort-upgrade <new-version>
#
# If prerm fails during deconfiguration of a package:
# <postinst> abort-deconfigure in-favour <new-package> <version>
# removing <old-package> <version>
#
# If prerm fails during replacement due to conflict:
# <postinst> abort-remove in-favour <new-package> <version>
case "$1" in
configure|triggered)
update-alternatives \
--install /usr/share/plymouth/themes/text.plymouth text.plymouth \
/usr/share/plymouth/themes/ubuntu-mate-text/ubuntu-mate-text.plymouth 100
if which update-initramfs >/dev/null 2>&1
then
update-initramfs -u
fi
;;
abort-upgrade|abort-deconfigure|abort-remove)
;;
*)
echo "$0 called with unknown argument \`$1'" 1>&2
exit 1
;;
esac
exit 0
|