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Full Discussion: Compare string length to a number
Top Forums Shell Programming and Scripting Compare string length to a number Post 302979960 by RavinderSingh13 on Monday 22nd of August 2016 11:34:58 AM
Old 08-22-2016
Quote:
Originally Posted by rajneesh4U
Hi,
I want to compare strings length to a number but i am getting error. I want first name should be length of 8.
Please help.
Code:
#bin !/bin/bash
clear
echo -n "Enter name "
read name
IFS=_
ary=($name)
for key in "${!ary[@]}"; do echo "$key${ary[$key]}"; done
##First name should be equal to 8 digits
var=${ary[0]}
l1=${#var}
echo "$l1"
if [ "$l1" == 8]
then 
echo "Length Matching"
else
echo "Not Matching"
if

Hello rajneesh4U,

As a starter, could you please change if [ "$l1" == 8] to if [[ "$l1" == 8 ]] and let us know how it goes then(Not tested complete script though).

Thanks,
R. Singh
 

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LEARN ABOUT PHP

boolval

BOOLVAL(3)								 1								BOOLVAL(3)

boolval - Get the boolean value of a variable

SYNOPSIS

       boolean boolval (mixed  $var)

DESCRIPTION

	Returns the boolean value of $var.

PARAMETERS

	      o $var
		- The scalar value being converted to a boolean.

RETURN VALUES

	The boolean value of $var.

EXAMPLES

       Example #1

	      boolval(3) examples

	      <?php
	      echo '0:	      '.(boolval(0) ? 'true' : 'false')."
";
	      echo '42:       '.(boolval(42) ? 'true' : 'false')."
";
	      echo '0.0:      '.(boolval(0.0) ? 'true' : 'false')."
";
	      echo '4.2:      '.(boolval(4.2) ? 'true' : 'false')."
";
	      echo '"":       '.(boolval("") ? 'true' : 'false')."
";
	      echo '"string": '.(boolval("string") ? 'true' : 'false')."
";
	      echo '"0":      '.(boolval("0") ? 'true' : 'false')."
";
	      echo '"1":      '.(boolval("1") ? 'true' : 'false')."
";
	      echo '[1, 2]:   '.(boolval([1, 2]) ? 'true' : 'false')."
";
	      echo '[]:       '.(boolval([]) ? 'true' : 'false')."
";
	      echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."
";
	      ?>

	      The above example will output:

	      0:	false
	      42:	true
	      0.0:	false
	      4.2:	true
	      "":	false
	      "string": true
	      "0":	false
	      "1":	true
	      [1, 2]:	true
	      []:	false
	      stdClass: true

SEE ALSO

       floatval(3), intval(3), strval(3), settype(3), is_bool(3), Type juggling.

PHP Documentation Group 														BOOLVAL(3)
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