From 2d09626a84897d03e9ddf636db08243f53d41b45 Mon Sep 17 00:00:00 2001
From: David Robert Verelst <dave@dtu.dk>
Date: Sun, 28 Aug 2016 09:06:32 +0200
Subject: [PATCH] launch.py: only add cronjob to crontab if it does not exist
---
launch.py | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/launch.py b/launch.py
index d9c0648..94a915d 100755
--- a/launch.py
+++ b/launch.py
@@ -113,10 +113,26 @@ def write_crontab(every_min=5):
f.write(crontab)
f.flush()
f.close()
- cmd = 'crontab %s' % fpath
+
+ # does the current crontab already exist?
+ cmd = 'crontab -l'
p = sproc.Popen(cmd, stdout=sproc.PIPE, stderr=sproc.STDOUT, shell=True)
stdout = p.stdout.readlines()
p.wait()
+ crontab_exists = False
+ for line in stdout:
+ if line.find(cwd) > -1 and line.find(launch) > -1:
+ # current crontab job is already running!
+ crontab_exists = True
+ break
+
+ if not crontab_exists:
+ cmd = 'crontab %s' % fpath
+ p = sproc.Popen(cmd, stdout=sproc.PIPE, stderr=sproc.STDOUT, shell=True)
+ stdout = p.stdout.readlines()
+ p.wait()
+ print "added launch.py to crontab:"
+ print crontab
def remove_crontab():
cmd = 'crontab -r'
--
GitLab