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Top Forums UNIX for Dummies Questions & Answers shell script - loop to countdown Post 11127 by Perderabo on Thursday 29th of November 2001 09:45:28 AM
Old 11-29-2001
We're really not supposed to help folks with homework assignments on this board. But you've done most of the work and you're stuck on a very tricky problem.

if [ -n $x ]

will not work, If there is nothing in x the command becomes:

if [ -n ]

So you need to use

if [ -n "$x" ]

Now when threre's nothing in x, the command becomes

if [ -n "" ]
 

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