postinst is in ksh 93u+20120801-3.1ubuntu1.
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 | #!/bin/sh
set -e
case "$1" in
configure)
# continue below
;;
abort-upgrade|abort-remove|abort-deconfigure)
exit 0
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 0
;;
esac
# Automatically added by dh_installmenu
if [ "$1" = "configure" ] && [ -x "`which update-menus 2>/dev/null`" ]; then
update-menus
fi
# End automatically added section
# The alternative is the mksh package.
# For a discussion on interactions between ksh and mksh, see #764401.
update-alternatives --install /bin/ksh ksh /bin/ksh93 20 \
--slave /usr/share/man/man1/ksh.1.gz ksh.1.gz \
/usr/share/man/man1/ksh93.1.gz
# create compatibility symlink if necessary
test -e /usr/bin/ksh || test -h /usr/bin/ksh || \
ln -s /bin/ksh /usr/bin/ksh
# For a discussion of what we put in /etc/shells see #790118.
add-shell /bin/ksh93
add-shell /bin/rksh93
# This was put in to resolve bug #687343.
update-binfmts --import ksh
exit 0
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