Linux - I am redirecting a command to a file, but I also want to see the output on the screen

Posted on 2007-12-06
Last Modified: 2013-12-16

I'm running command like this, to redirect output to a file

SomeCommand > outputfile.txt

I would also like to see the output on the screen.

How can I achieve this?

Thank you for your time
Question by:oxygen_728
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Assisted Solution

killbrad earned 50 total points
ID: 20422451
SomeCommand > outputfile.txt && cat outputfile.txt
LVL 21

Accepted Solution

robocat earned 400 total points
ID: 20422459

From another terminal, you can start a

tail -f outputfile.txt

Another interesting way to do this is using the "tee" command

SomeCommand | tee outputfile.txt

The tee command will send the output to the screen and to the file


Assisted Solution

sardiskan earned 50 total points
ID: 20422473
There are some fancy scripting techniques you can use to do that, but if you are looking for a command line answer, and you don't need to see the output AS it happens, I'd do this:
# somecmd > outputfile.txt && cat outputfile.txt

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Author Closing Comment

ID: 31413232
thanks, the tee command looks great

Expert Comment

ID: 20422564
you can use the  "tee" command  

like this:

somecommand | tee outputfile.txt


Expert Comment

ID: 20422639
Thanks for that info about tee command.. wasn't aware of that.. good show!  :-)

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