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IsNumber.sh (GPL)

IsNumber.sh is a Bourne Shell script that helps your custom shell scripts determine whether the specified argument is a number. Both floating point and discrete numbers are valid. You can use it to test the validity of user input, etc. This script outputs a '1' for true and a '0' for false.

IsNumber.sh is distributed as executable source code under the GNU General Public License. Please see the license agreement elsewhere on this site.

Usage

IsNumber.sh arg

Examples

: IsNumber.sh 239487
1
: IsNumber.sh 239.3497
1
: IsNumber.sh 33947.
0
: IsNumber.sh .3497
0
: IsNumber.sh aowiefj
0
: IsNumber.sh oejf3974
0

Attached File: IsNumber.sh (376 B)

Chieh Cheng
Wed, 18 Jun 2008 00:27:17 +0000

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