Null value for case statement 1

[goldenradium2001]

Is there any way to specify a null value for a case statement? For example here's my statement:

case "$var" in
1) echo "Correct. The answer is 1."
;;
<null>) echo &quot;You need to enter a value.&quot;
;;
*) echo &quot;Incorrect answer.&quot;
;;
esac

Thanks in advance!

 

[raisin96]

Hi,

i believe a null is represented by the characters ''

e.g.

#!/bin/ksh

var=$1

case $var in
1) echo &quot;YES&quot;;;
2) echo &quot;NO&quot;;;
'') echo &quot;INCORRECT&quot;;;
*) echo &quot;NOPE&quot;;;
esac

good luck!

br,

raisin96

 

[goldenradium2001]

Thanks, actually &quot;&quot; worked but at least I knew what to start with!

Thanks again!

 

[jamisar]

an other way:
case x$var in x) #empty var
;; xx) # var value == x
;; esac -----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !