Numeric file permissions help

Sorry for the delay in posting another howto.  I have been working on a set of network knocking scripts (server daemon, init.d, and client).  I should be posting them soon. For now though...

I find when working on scripts that remembering numeric representations of file permissions can be a pain. So I wrote a quick 1liner to paste and run, to help decide.

It creates a temp-file in the current directory, loops through changing the permissions, and prints the current number, along with what permissions the user has with that number represented. You can then use that to decide which number to use for each (user|group|other). Finally it removes the temp-file again.

There are tables out already, but I wanted a quick function in terminal for myself. so I include the following function in my default functions-rc file. Here is the function:

fileperms(){ testfile=$(tempfile -d ./);for i in {1..7};do chmod 0$(($i))00 $testfile;echo "$i $(ls -l $testfile |cut -d ' ' -f1)";done;rm $testfile ; }

You can then use it by just calling 'fileperms'

Hope you find it useful and thanks for reading.