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Commands tagged tee from sorted by
Terminal - Commands tagged tee - 27 results
echo "Hello World." | tee -a hello.txt
2009-06-26 00:55:59
User: thebillywayne
Functions: echo tee
Tags: tee
1
Up
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bash or tcsh redirect both to stdout and to a file

When plumbers use pipes, they sometimes need a T-joint. The Unix equivalent to this is 'tee'. The -a flag tells 'tee' to append to the file, rather than clobbering it.

Tested on bash and tcsh.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo "foo bar" | sudo tee -a /path/to/some/file
2009-02-18 13:54:25
User: raphink
Functions: echo sudo tee
Tags: Text Processing tee
3
Up
Down
Add a line to a file using sudo

This is the solution to the common mistake made by sudo newbies, since

sudo echo "foo bar" >> /path/to/some/file

does NOT add to the file as root.

Alternatively,

sudo echo "foo bar" > /path/to/some/file

should be replaced by

echo "foo bar" | sudo tee /path/to/some/file

And you can add a >/dev/null in the end if you're not interested in the tee stdout :

echo "foo bar" | sudo tee -a /path/to/some/file >/dev/null
Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate