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twiddle

# $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:

$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"
twiddle.txt · Last modified: 2006/08/29 16:08 (external edit)