postinst is in php7.2-dev 7.2.3-1ubuntu1.
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 15 16 | #!/bin/sh
set -e
if [ "$1" = "configure" ]; then
update-alternatives \
--install /usr/bin/php-config php-config /usr/bin/php-config7.2 72 \
--slave /usr/share/man/man1/php-config.1.gz php-config.1.gz /usr/share/man/man1/php-config7.2.1.gz
update-alternatives \
--install /usr/bin/phpize phpize /usr/bin/phpize7.2 72 \
--slave /usr/share/man/man1/phpize.1.gz phpize.1.gz /usr/share/man/man1/phpize7.2.1.gz
fi
exit 0
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