prerm is in icedtea-netx 1.6.2-3.1ubuntu3.
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 | #!/bin/sh
set -e
base6dir=/usr/lib/jvm/java-6-openjdk-amd64
base7dir=/usr/lib/jvm/java-7-openjdk-amd64
base8dir=/usr/lib/jvm/java-8-openjdk-amd64
tools='javaws itweb-settings policyeditor'
if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
for i in $tools; do
update-alternatives --remove $i $base6dir/jre/bin/$i
done
for i in $tools; do
update-alternatives --remove $i $base7dir/jre/bin/$i
done
for i in $tools; do
update-alternatives --remove $i $base8dir/jre/bin/$i
done
fi
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