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-   -   Switch stdout between /dev/null and a file? (https://www.linuxquestions.org/questions/linux-general-1/switch-stdout-between-dev-null-and-a-file-188439/)

gremlin2000 06-01-2004 10:20 AM

Switch stdout between /dev/null and a file?
 
(Originally posted to the newbie forum, but it was suggested that that was not the correct place)

Hello,
I have a script which I run using nohup. When I run it it will (as expected) redirect the output to the file nohup. This is great because I can tail -f the file and see whats going on. I want to stop this file from filling my disk while I'm not logged in (but leave the script running) but still be able to tail -f it to see the output when I am logged in. Is there a way to switch the output from nohup between this file and /dev/null while it is running?
(or maybe use cron to truncate the file every now and then?).

Cheers,
Gremlin.

brassfish 06-01-2004 02:39 PM

Setup a crontab entry that does a 'tail filename>filename' every few minutes.

gremlin2000 06-08-2004 07:12 AM

That's not a bad idea. It did the job until I discovered the screen command. That does the job without having to direct the output to a file and I can easily have several of them running.


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