Redirecting output to multiple locations?

SirTristan · 05-29-2008, 03:34 AM

How does one redirect the output for a command to multiple locations? For instance for:

Code:

ls /dir > out1.txt

Instead of just out1.txt, can one output to out1.txt and out2.txt?

And can one both output to an output file, and display the output to the shell screen as normal (as if there was no output redirection)?

ophirg · 05-29-2008, 03:58 AM

you can use

Code:

ls /dir > a ; cat a > b

it's a bit long, and technically it's a two commands
but it works

grizly · 05-29-2008, 04:02 AM

Quote:

$ls /dir | tee file1.txt | tee file2.txt

Enjoy dude, outputs to both files and displays on screen.

Tinkster · 05-29-2008, 04:51 AM

And if you don't want to see it use tee and redirect ;}

Code:

$ls /dir | tee out1.txt > out2.txt

ophirg · 05-29-2008, 05:04 AM

Nice solution
Tinkster and grizly
didnt think about it...

colucix · 05-29-2008, 05:18 AM

Or simply

Code:

ls /dir | tee file1 file2 file3 file4 file5 ... fileN > /dev/null

SirTristan · 05-29-2008, 03:52 PM

Quote:

Originally Posted by grizly

Enjoy dude, outputs to both files and displays on screen.

Thanks, this works

The program that I actually want to output takes a very long time (hours), so the two commands option wouldn't work, but 'tee' does.