This file is indexed.

postinst is in nginx-full 1.14.0-0ubuntu1.

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.

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#!/bin/sh
set -e

case "$1" in
  abort-upgrade|abort-remove|abort-deconfigure|configure)
    ;;
  triggered)
    if [ -x /etc/init.d/nginx ]; then
      if [ -s /run/nginx.pid ] && pidof /usr/sbin/nginx >/dev/null; then
        echo "Triggering nginx reload ..."
        invoke-rc.d nginx reload || true
      fi
    fi
    exit 0
    ;;
  *)
    echo "postinst called with unknown argument \`$1'" >&2
    exit 1
    ;;
esac

if [ -x /etc/init.d/nginx ]; then
  if [ -f /run/nginx.pid ] && pidof /usr/sbin/nginx >/dev/null; then
    invoke-rc.d nginx upgrade || invoke-rc.d nginx restart
    exit $?
  else
    invoke-rc.d nginx start || exit $?
  fi
fi



exit 0