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-   -   How to test for a range of digits? (https://www.linuxquestions.org/questions/linux-newbie-8/how-to-test-for-a-range-of-digits-727408/)

btacuso 05-20-2009 07:07 PM
How to test for a range of digits?
 
Hi, I intend to test the equality of a variable to a range of digits or characters, something like this:

if [ "$line3" == [0-9] ]
then echo "$line3"
fi


I am aware that I could do it one at a time by not using [0-9] but it will be a longer code. Any help will be appreciated. Thanks a lot.

Tinkster 05-20-2009 07:17 PM
Hi,


Welcome to LQ!

Quote:
Originally Posted by btacuso (Post 3547545)
Hi, I intend to test the equality of a variable to a range of digits or characters, something like this:

if [ "$line3" == [0-9] ]
then echo "$line3"
fi


I am aware that I could do it one at a time by not using [0-9] but it will be a longer code. Any help will be appreciated. Thanks a lot.


Close :}

Code:
if [[ "$line3" =~ [0-9] ]]; then
  echo "line3"
fi



Cheers,
Tink

btacuso 05-20-2009 07:34 PM
Quote:
Originally Posted by Tinkster (Post 3547549)
Hi,


Welcome to LQ!





Close :}

Code:
if [[ "$line3" =~ [0-9] ]]; then
  echo "line3"
fi



Cheers,
Tink
You are a big help, Tink, I'm off to work now. Cheers.


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