postinst is in tcc 0.9.27-5.
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 | #!/bin/sh
set -e
case "$1" in
    configure)
	update-alternatives --quiet --install /usr/bin/cc cc /usr/bin/tcc 10 \
       --slave /usr/share/man/man1/cc.1.gz cc.1.gz                           \
       /usr/share/man/man1/tcc.1.gz;
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 0
    ;;
esac
exit 0
 |