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Add a line to a file using sudo

Terminal - Add a line to a file using sudo
echo "foo bar" | sudo tee -a /path/to/some/file
2009-02-18 13:54:25
User: raphink
Functions: echo sudo tee
3
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

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

sudo -s ?

Comment by Antoine 396 weeks and 4 days ago

@Antoine: sudo -s gives you a login. The goal here is just to add to a file as root _without_ using a root shell.

Comment by raphink 396 weeks and 4 days ago

Your point of view

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