How can I do something like command > file in a way that it appends to the file, instead of overwriting?
This question is related to
linux
shell
command-line
Use >> to append:
command >> file
you can append the file with >> sign. It insert the contents at the last of the file which we are using.e.g if file let its name is myfile contains xyz then cat >> myfile abc ctrl d
after the above process the myfile contains xyzabc.
Yeah.
command >> file to redirect just stdout of command.
command >> file 2>&1 to redirect stdout and stderr to the file (works in bash, zsh)
And if you need to use sudo, remember that just
sudo command >> /file/requiring/sudo/privileges does not work, as privilege elevation applies to command but not shell redirection part. However, simply using
tee solves the problem:
command | sudo tee -a /file/requiring/sudo/privileges
Source: Stackoverflow.com