shadow/debian/secure-su.preinst

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#!/bin/sh
set -e
if [ install = "$1" ] ; then
# dpkg-divert uses rename so can't do cross-device diversions. bleah.
[ -d /bin/secure-su ] || mkdir /bin/secure-su
chmod 700 /bin/secure-su
ln -sf ../../usr/doc/secure-su/README.gz /bin/secure-su/README.gz
dpkg-divert --package secure-su --add --rename \
--divert /bin/secure-su/su /bin/su
dpkg-divert --package secure-su --add --rename \
--divert /usr/man/man1/gnu-su.1.gz /usr/man/man1/su.1.gz
fi