Pasting my python code below:
from crontab import CronTab
tab = CronTab()
cmd1 = 'actual command'
cron_job = tab.new(cmd)
cron_job.minute.every(1)
cron_job.enable()
tab.write_to_user(user=True)
I am setting these cronjob based on some user input on an app. So overtime a user clicks submit, I want to create a new cronjob under the same crontab file (since its a webapp, it runs under the context of a standard user).
But it seems every time a user clicks submit, my crontab overwrites the previous task. Am I missing something here?
The way you are recreating the tab variable on each request does not append to the crontab in question; it overwrites it.
If you pass user=True to the CronTab constructor you will be able to append to the existing crontab:
from crontab import CronTab
tab = CronTab(user=True)
cmd1 = 'echo Hello'
cmd2 = 'echo CronTab'
job1 = tab.new(cmd1)
job1.minute.every(1)
job1.enable()
job2 = tab.new(cmd2)
job2.hour.every(1)
job2.enable()
print list(tab.commands) # ['echo Hello', 'echo CronTab']
# Explicitly specify we want the user's crontab:
tab2 = CronTab(user=True)
print list(tab2.commands) # ['echo Hello', 'echo CronTab']