prerm is in dhcp-helper 1.2-1build1.
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 | #!/bin/sh
set -e
if [ -x /usr/sbin/invoke-rc.d ] ; then
invoke-rc.d dhcp-helper stop || true
else
/etc/init.d/dhcp-helper stop || true
fi
exit 0
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