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== Use of noclobber ==

When setting 'noclobber' overwriting the content of an existing file by the '>' redirection operator will not be possible. You might have typed '>' to redirect the output of a certain command to an existing file, while you intended to use '>>' redirection operator. This is where 'noclobber' comes in action, preventing you from accidentally deleting the content of the existing file. 

=== How to use it ===

{{{
ls > list
}}}

Try setting noclobber

{{{
set -o noclobber
}}}

Try again

{{{
ls > list
bash: list: cannot overwrite existing file 
}}}

=== How to overwrite the file even with noclobber set ===
If you are determined to overwrite the file you can use the '>|' method. Thus

{{{
ls >| list 
}}}

=== Unset noclobber ===

Just like setting noclobber, it is also possible to unset it so overwriting can take place using '>' redirection operator. 
{{{
set +o noclobber
}}}



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