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Full Discussion: Regular expression help
Top Forums UNIX for Dummies Questions & Answers Regular expression help Post 302757887 by frodo61 on Friday 18th of January 2013 06:49:50 AM
Old 01-18-2013
Regular expression help

Hi,

I am quite knew to scripting and I am trying to get a regular expression to work to check that a user enters a valid version number such as 1 or 1.1 or 12.3 etc. I dont seem to be able to get it to work as it picks up versions such as 1.......2. I only want it to work with a single dot. Thanks.

Code:
while true
do
        print -- "Please enter the version number"
        read version
        if [[ "${version}" != "[0-9]*\.[0-9]*" ]]
                then
                print -- "Version is not a number"
        else
        break
        fi
done


Last edited by Scott; 01-18-2013 at 07:56 AM.. Reason: Code tags, please...
 

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NAME
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DISPLAY All work and no play makes jack a dull boy. XENVIRONMENT All work and no play makes jack a dull boy. All work and no play makes jack a dull boy. SEE ALSO
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