Prevent overwriting file when using redirection
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 :(
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$
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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some output >| protected_file