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Old 06-29-2007, 03:59 AM   #1
fjkum
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Registered: Feb 2006
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Bash script to check the input string length


Hi,

I would like to restrict user input to only 12 characters on the command line. How can I achive this using bash programming?

Many thanks.

fj
 
Old 06-29-2007, 04:10 AM   #2
ghostdog74
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Registered: Aug 2006
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Quote:
Originally Posted by fjkum
Hi,

I would like to restrict user input to only 12 characters on the command line. How can I achive this using bash programming?

Many thanks.

fj
Code:
# string="testing"
# echo ${#string}
7
 
Old 06-29-2007, 04:26 AM   #3
bigearsbilly
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Registered: Mar 2004
Location: england
Distribution: FreeBSD, Debian, Mint, Puppy
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summink like...

Code:
string=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
while [ ${#string} -ge 12 ];do 
read string;
echo ${#string};done
 
Old 06-30-2007, 08:43 PM   #4
cfaj
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Quote:
Originally Posted by fjkum
I would like to restrict user input to only 12 characters on the command line. How can I achive this using bash programming?
Code:
read -n12 var
 
  


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