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twiddle [2006/08/29 16:08] (current) – created - external edit 127.0.0.1
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 +# $EPIC: twiddle.txt,v 1.2 2006/08/20 17:37:08 sthalik Exp $
 +======Synopsis:======
 +$twiddle(<tilde-expansion>)
 +
 +======Technical:======
 +This function is used to do tilde-expansion on the given name.  The tilde
 +is required.  If a user exists on the system with a home directory, the
 +full path of that directory is returned.  If the user does not exist,
 +nothing is returned.  If a tilde is not the first character, the input is
 +returned.
 +
 +======Practical:======
 +This is useful for ensuring that files will be written to your home
 +directory, regardless of the current directory.
 +
 +======Returns:======
 +full path of home directory if user exists, nothing if not, input if error
 +
 +======Examples:======
 +<file>
 +$twiddle(~)                  returns your home directory
 +$twiddle(~jvs)               returns home directory for user jvs
 +$twiddle(~nosuchuser)        no such user, returns nothing
 +$twiddle(blah)               bad input, returns "blah"
 +</file>
  
twiddle.txt · Last modified: 2006/08/29 16:08 by 127.0.0.1