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Periodically run a command without hangups, and send the output to your e-mail

Terminal - Periodically run a command without hangups, and send the output to your e-mail
nohup bash -c "while true; do ps -x | mail [email protected]; sleep 3600; done" | mail [email protected] &
2013-08-19 17:21:37
User: pascalv
Functions: bash mail nohup
1
Periodically run a command without hangups, and send the output to your e-mail

Run "ps -x" (process status) in the background every hour (in this example).

The outputs of both "nohup" and "ps -x" are sent to the e-mail (instead of nohup.out and stdout and stderr).

If you like it, replace "ps -x" by the command of your choice, replace 3600 (1 hour) by the period of your choice.

You can run the command in the loop any time by killing the sleep process. For example

ps -x

2925 ? S 0:00.00 sh -c unzip E.zip >/dev/null 2>&1

11288 ? O 0:00.00 unzip E.zip

25428 ? I 0:00.00 sleep 3600

14346 pts/42- I 0:00.01 bash -c while true; do ps -x | mail pascalv; sleep 3600; done

643 pts/66 Ss 0:00.03 -bash

14124 pts/66 O+ 0:00.00 ps -x

kill 25428

You have mail in /mail/pascalv

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

the "cron" (deamon) program was written for running periodic commands.

It is very easy to use, recommend reading the manual page for the user command "crontab":

man crontab

Comment by mpb 157 weeks and 4 days ago

True, however not all shell providers allow cron jobs. Some allow nohup and one or two background processes, without allowing cron jobs.

Comment by pascalv 157 weeks and 4 days ago

Sure, it's easy to use cron, it's even easier to do with nohup/sleep. cron's a different tool, not intrinsically a better one, unless you have a reason why the command *shouldn't* be used, I see no reason to vote it down.

Comment by MadCasual 157 weeks and 3 days ago

@MadCasual Thanks, appreciate some of us find some utility in this command...

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Comment by sanjunn 13 weeks and 3 days ago

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