CODEWITHSUNDEEP
linuxubuntu
Kiran
Kiran

Reputation: 8538

How to redirect the output of an application in background to /dev/null

I would like to redirect the output generated from a background application in Linux to /dev/null.

I am using kate text editor and it prints all the debug messages on the terminal which I would like to redirect to /dev/null.

Any idea how to do it ?

Thanks

Upvotes: 128

Views: 196129

Answers (2)

Jim Hunziker
Jim Hunziker

Reputation: 15380

These will also redirect both:

yourcommand  &> /dev/null

yourcommand  >& /dev/null

though the bash manual says the first is preferred.

Upvotes: 13

evildead
evildead

Reputation: 4757

You use: 

yourcommand  > /dev/null 2>&1

If it should run in the Background add an &

yourcommand > /dev/null 2>&1 &

>/dev/null 2>&1 means redirect stdout to /dev/null AND stderr to the place where stdout points at that time

If you want stderr to occur on console and only stdout going to /dev/null you can use:

yourcommand 2>&1 > /dev/null

In this case stderr is redirected to stdout (e.g. your console) and afterwards the original stdout is redirected to /dev/null

If the program should not terminate you can use:

nohup yourcommand &

Without any parameter all output lands in nohup.out

Upvotes: 300

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