preinst is in pdksh 46-2ubuntu3.
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 51 52 53 54 55 | #!/bin/sh
# $MirOS: contrib/hosted/tg/deb/mksh/debian/pdksh.preinst,v 1.5 2012/11/26 18:32:51 tg Exp $
set -e
# This maintainer script can be called the following ways:
#
# * new-preinst "install" [$old_version]
# * new-preinst "upgrade" [$old_version]
# * old-preinst "abort-upgrade" $new_version
# Essential packages and Pre-Depends are available. Pre-Depends have
# been configured once, but may be unpacked or Half-Configured only,
# or, for "abort-upgrade", Half-Installed if their upgrade failed.
case $1 in
install|upgrade)
(update-alternatives --remove ksh /bin/pdksh || :)
(remove-shell /bin/pdksh || :)
;;
abort-upgrade)
;;
*)
echo >&2 "preinst called with unknown subcommand '$1'"
exit 1
;;
esac
#
# Due to switching the source package from pdksh to mksh, we cannot
# use apt-listchanges with a NEWS.Debian file here; neither can we
# use debconf as that would be considered abuse/nagging.
#
test $1 = upgrade && test -n "$2" && \
dpkg --compare-versions "$2" lt '40.9.20120628-1~' && \
echo '
+===============================================================+
| Note for the pdksh -> mksh transition |
+---------------------------------------------------------------+
| If you have any user accounts with /bin/pdksh as login shell, |
| change these to /bin/mksh because pdksh will be replaced by a |
| symlink to lksh, a variant of mksh used to run legacy scripts |
| but not suitable for interactive use. For sane defaults, also |
| have users copy /etc/skel/.mkshrc into their home directories |
| and unset ENV. This warning will only be shown this once. |
+===============================================================+
'
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
|