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Shell Programming and Scripting

if test is x numbers

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# 1  
Old 10-16-2007
Question if test is x numbers
Using "if" I was wonder if there is a way that I could test if a varible was 7 numeric numbers?

example (the following would pass the test):
0000000
1234567
5555555
9999999

example (the following would fail):
000000
123456
a234567

Thanks in advance.
# 2  
Old 10-16-2007
Code:
#!/bin/sh

NUM=$1

case $1 in
[0-9][0-9][0-9][0-9][0-9][0-9][0-9] )
    echo numeric
    ;;
* )
    echo not
    ;;
esac

# 3  
Old 10-17-2007
Quote:
Originally Posted by porter
Code:
#!/bin/sh

NUM=$1

case $1 in
[0-9][0-9][0-9][0-9][0-9][0-9][0-9] )
    echo numeric
    ;;
* )
    echo not
    ;;
esac

Porter works great thank you.
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