Radix cross Linux

#!/bin/sh

# Preserve new files
install_file() {
  NEW="$1"
  OLD="`dirname $NEW`/`basename $NEW .new`"
  # If there's no file by that name, mv it over:
  if [ ! -r $OLD ]; then
    mv $NEW $OLD
  elif [ "`cat $OLD | md5sum`" = "`cat $NEW | md5sum`" ]; then # toss the redundant copy
    rm $NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}


# arg 1:  the new package version
pre_install() {
  /bin/true
}

# arg 1:  the new package version
post_install() {
  for cfgfile in chage.new chgpasswd.new chpasswd.new groupadd.new groupdel.new groupmems.new groupmod.new newusers.new other.new passwd.new postlogin.new su.new su-l.new system-auth.new useradd.new userdel.new usermod.new ; do
    if [ -r etc/pam.d/$cfgfile ]; then
      install_file etc/pam.d/$cfgfile
    fi
  done

  install_file etc/default/useradd.new
  install_file etc/login.defs.new

  install_file var/log/faillog.new
  rm -f var/log/faillog.new

  if [ -r etc/login.access.new ]; then
    install_file etc/login.access.new
  fi
}

# arg 1:  the new package version
# arg 2:  the old package version
pre_update() {
  /bin/true
}

# arg 1:  the new package version
# arg 2:  the old package version
post_update() {
  post_install
}

# arg 1:  the old package version
pre_remove() {
  /bin/true
}

# arg 1:  the old package version
post_remove() {
  /bin/true
}


operation=$1
shift

$operation $*