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shell tricks (Re: bash if file exists)



 On Thu, Apr 03, 2008 at 06:26:38PM -0400, Derek Martin wrote: 
> foo=`echo *.zip |grep -v '*\.zip'` 

Incidentally, in this way, echo can be used like ls: 

  $ echo * 

Why is this useful to know?  Say your system has severe filesystem 
corruption, and /bin/ls is one of the files that was corrupted.  In 
general, if that happens, ls will not work, but if your shell still 
works, you can still get a list of the files in the directory with 
that command.  If you want to also see "hidden" files, then this: 

  $ echo * .[A-Za-z0-9]* 

Of course, that assumes Roman alphanumeric characters.  It doesn't 
work very well if you have files called things like  .��� in the 
directory.  =8^) 


-- 
Derek D. Martin    http://www.pizzashack.org/   GPG Key ID: 0xDFBEAD02 
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