postinst is in libncursesw5-dbg 5.9+20140913-1+deb8u3.
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 | #! /bin/sh
set -e
PACKAGE=libncursesw5-dbg
if dpkg --compare-versions "$2" lt-nl 5.9-7; then
# Replace directory with symlink.
if [ ! -L /usr/share/doc/$PACKAGE ] && \
[ -d /usr/share/doc/$PACKAGE ]; then
if rmdir /usr/share/doc/$PACKAGE 2>/dev/null; then
ln -sf libtinfo5 /usr/share/doc/$PACKAGE
fi
fi
fi
exit 0
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