postinst is in iputils-ping 3:20161105-1ubuntu2.
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 21 22 23 24 25 26 27 28 29 30 31 32 | #!/bin/sh
set -e
if [ "$1" = configure ]; then
# If we have setcap is installed, try setting cap_net_raw+ep,
# which allows us to install our binaries without the setuid
# bit.
# Don't use setcap for Ubuntu as tarballs don't properly store those
# by default. LP: #1302192
if false; then
if setcap cap_net_raw+ep /bin/ping; then
chmod u-s /bin/ping
else
echo "Setcap failed on /bin/ping, falling back to setuid" >&2
chmod u+s /bin/ping
fi
else
chmod u+s /bin/ping
fi
fi
exit 0
# Local variables:
# mode: shell-script
# tab-width: 4
# indent-tabs-mode: nil
# end:
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