postinst is in lua5.2 5.2.4-1ubuntu1.
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 | #!/bin/sh -e
case "$1" in
configure)
update-alternatives \
--install /usr/bin/lua lua-interpreter /usr/bin/lua5.2 120 \
--slave /usr/share/man/man1/lua.1.gz lua-manual \
/usr/share/man/man1/lua5.2.1.gz
update-alternatives \
--install /usr/bin/luac lua-compiler /usr/bin/luac5.2 120 \
--slave /usr/share/man/man1/luac.1.gz lua-compiler-manual \
/usr/share/man/man1/luac5.2.1.gz
;;
esac
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