#! /bin/sh
# Script to create backup copies of specified files.
# by Chuck Anderson, Colorado State University, January 2005.
# Example:
# > backup *.cpp
#    Created the following BACKUP files:
# BACKUP/arr2.cpp.2005-01-25-14-51-36
# BACKUP/arr.cpp.2005-01-25-14-51-36
#    BACKUP now contains  2  files

## Create subdirectory BACKUP if it does not exist yet.

if [ ! -d BACKUP ]; then
    echo "  Creating BACKUP directory."
    mkdir BACKUP
    chmod go-rwx BACKUP
fi

## For each file specified as command line arguments...

echo "  Created the following BACKUP files:"
for file in "$@"
  do
  if [ -f $file ]
      then
      ## ...copy into BACKUP dir with same filename appended by date and time
      newname=$file.`date +"%F-%H-%M-%S"`
      cp $file BACKUP/$newname
      chmod go-rwx BACKUP/$newname
      ls BACKUP/$newname
  fi
done
echo "  BACKUP now contains " `ls -1 BACKUP | wc -l` " files"