This file is indexed.

postinst is in mpich2 1.4.1-1ubuntu1.

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.

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#!/bin/sh

set -e

case "$1" in
   configure)
      # Continue below
      ;;
   abort-upgrade|abort-remove|abort-deconfigure)
      exit 0;
      ;;
   *)
      echo "postinst called with unknown argument \`$1'" >&2
      exit 0;
      ;;
esac

# so, we are running with $1 = configure
# mpich2 versions before 1.2.1~rc1-1 were using two alternatives where other
# MPI implementations were using only one, which breaks. Clean up
# our mess.
if [ "$2" != "" ] && dpkg --compare-versions "$2" le "1.2.1~rc1-1"; then
    update-alternatives --remove mpiexec /usr/bin/mpiexec.mpich2
fi
if update-alternatives --list mpiexec > /dev/null 2>&1; then
    # OK, that case sucks. Apparently, we still have a mpiexec alternative, maybe
    # from a different package (like openmpi). In that case, the only thing we
    # can do is --remove-all...
    update-alternatives --remove-all mpiexec
fi

update-alternatives \
	--install /usr/bin/mpirun mpirun /usr/bin/mpirun.mpich2 40 \
	--slave /usr/share/man/man1/mpirun.1.gz mpirun.1.gz /usr/share/man/man1/mpirun.mpich2.1.gz \
	--slave /usr/bin/mpiexec mpiexec /usr/bin/mpiexec.mpich2 \
	--slave /usr/share/man/man1/mpiexec.1.gz mpiexec.1.gz /usr/share/man/man1/mpiexec.mpich2.1.gz 



exit 0