postinst is in mpg321 0.2.13-4ubuntu1.
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 42 43 44 45 46 47 48 49 50 | #! /bin/sh
# postinst script for mpg321
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
# * <postinst> `configure' <most-recently-configured-version>
# * <old-postinst> `abort-upgrade' <new version>
# * <conflictor's-postinst> `abort-remove' `in-favour' <package>
# <new-version>
# * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
# <failed-install-package> <version> `removing'
# <conflicting-package> <version>
# for details, see /usr/share/doc/packaging-manual/
#
# quoting from the policy:
# Any necessary prompting should almost always be confined to the
# post-installation script, and should be protected with a conditional
# so that unnecessary prompting doesn't happen if a package's
# installation fails and the `postinst' is called with `abort-upgrade',
# `abort-remove' or `abort-deconfigure'.
case "$1" in
configure)
update-alternatives --quiet --install /usr/bin/mpg123 mpg123 /usr/bin/mpg321 50 \
--slave /usr/share/man/man1/mpg123.1.gz mpg123.1.gz /usr/share/man/man1/mpg321.1.gz
update-alternatives --quiet --install /usr/bin/mp3-decoder mp3-decoder /usr/bin/mpg321 50 \
--slave /usr/share/man/man1/mp3-decoder.1.gz mp3-decoder.1.gz /usr/share/man/man1/mpg321.1.gz
update-alternatives --quiet --auto mpg123
update-alternatives --quiet --auto mp3-decoder
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 0
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
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