Prevent overwriting file when using redirection

set -o noclobber
If you set noclobber to on, bash won't allow redirection to overwrite existing files . set -o noclobber command turn the option on (default it s off ) . You can still append information but not overwrite the file .to turn it back off use : $ set +o noclobber . I use it because i overwrite a file by accident , after thought , content of the file was very important , creating a one more file mean nothing for my hard disk (we are not anymore on the 64 k memory time) , but content of file is far much important . What we call exeprience :(
Sample Output
gnu@robby:/tmp$ set -o noclobber
gnu@robby:/tmp$ cat  tesk
dffd
gnu@robby:/tmp$ cat > tesk
bash: tesk : impossible d'?craser le fichier existant
gnu@robby:/tmp$ cat  tesk
dffd
gnu@robby:/tmp$ cat >> tesk
fdf
gnu@robby:/tmp$ cat  tesk
dffd
fdf
gnu@robby:/tmp$ 

1
By: eastwind
2010-01-08 21:06:44
set

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What Others Think

if you really need to overwrite a file when noclobber option is on, then do this (add pipe after ">"): some output >| protected_file
alperyilmaz · 441 weeks and 1 day ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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