This file is indexed.

prerm is in gnuplot5-x11 5.0.3+dfsg2-1.

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
#!/bin/sh

set -e

if [ "$1" != "upgrade" ]; then
    update-alternatives --remove gnuplot /usr/bin/gnuplot5-x11
    update-alternatives --remove gnuplot5 /usr/bin/gnuplot5-x11
fi