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#!/usr/bin/python

#       ./backup_script.py filetobackup localdirectory backupname
# example:
#       ./backup_script.py /code/ /home/target/ example


import datetime
import time
import ftplib
import os
import sys

filetobackup = sys.argv[1]
localdirectory = sys.argv[2]
backupname = sys.argv[3]
today = datetime.date.today()

command = 'tar czf ' + localdirectory,backupname + '-' + today + '.tar.gz ' + filetobackup

os.system(command)


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www:/usr/local/scripts# vim backup_script.py
www:/usr/local/scripts# ./backup_script.py /root/ /usr/local/scripts/ test
Traceback (most recent call last):
  File "./backup_script.py", line 19, in <module>
    command = 'tar czf ' + localdirectory,backupname + '-' + today + '.tar.gz ' + filetobackup
TypeError: cannot concatenate 'str' and 'datetime.date' objects