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() {
  /bin/true
}
 
# 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 $*