bk - create backup file with current date.

bk.sh

#!/bin/sh
#create backup file with current date,like hoge.20120106_231651

#file backup command
if [ $# -lt 1 ]
then
  echo "usage: bk files.."
  echo "create backup files with date string."
  exit 0;
fi

EXT=`date +%Y%m%d.%H%M`

for FILE in $*
do
#   echo "cp ${FILE} ${FILE}.${EXT}"
   cp -a ${FILE} ${FILE}.${EXT}

done