Python, subprocess, dump, gzip and Cron
aweraw at gmail.com
Tue Jun 10 06:37:53 CEST 2008
I'm having a bit of trouble with a python script I wrote, though I'm not
sure if it's related directly to python, or one of the other software
The situation is that I'm trying to create a system backup script that
creates an image of the system, filters the output though gzip, and then
uploads the data (via ftp) to a remote site.
The problem is that when I run the script from the command line, it
works as I expect it, but when it is run by cron I only get a 20 byte
file where the compressed image should be... does anyone have any idea
as to why this might be happening? Code follows
from subprocess import PIPE, Popen
from ftplib import FTP
host = 'box'
filename = '%s.img.gz' % host
ftp_host = '192.168.1.250'
ftpuser, ftppass = 'admin', 'admin'
dest_dir = '/share/%s' % host
dump = Popen('dump 0uaf - /',shell=True,stdout=PIPE)
gzip = Popen('gzip',shell=True,stdin=dump.stdout,stdout=PIPE)
ftp = FTP(ftp_host)
ftp.storbinary('STOR %s' % filename,gzip.stdout)
print "Image '%s' created" % filename
I appreciate all feedback. Thanks in advance.
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