A linux script that make a backup of the folder with a different filename each time

A simple script to backup the entire directory and subfolders execpt files and path that contain “data” in the string.

Each backup have a unique filenames with the date in it.

#!/bin/bash
# Loris Palmerini 2009 - copyright http://www.mozilla.org/MPL/MPL-1.1.html
# a simple script to backup the entire didirectory and subfolder
# execpt the filename and path that contain "data"
# each backup have a unique filenames with the date

# prefix of the filename or beggining part
prefix=bck

# the "date" of today in form of YYmmDDhhMMss
data=$(date +%Y%m%d%H%M%S)  # See date command

# we add the ".tgz" suffix beacouse we will use tar -cvz
filename=$prefix$data".tgz"
# uncomment the next to print the filename
#echo "Backup file filename = $filename"

# list the file of the directory 1 per line and print only
#lines without "data" in the name of file or path
# You can remove grep command to backup all
ls -1 | grep -v "data" > filelist

# creating the backup with the file listed in filenames
# as it print backupd files, remove the "v" in -cvzf to make it silenced
tar --files-from=filelist -cvzf $filename

# uncomment the next if You want  to close the shell
#exit 0