checking the value of the variable

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06-12-2008

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checking the value of the variable

Does anyone know the quick way to check if the variable contains only numeric characters, for example:
A=123445 - correct
B=#f123* - incorrect
I am in ksh88i Thanks a lot for help -A

aoussenko

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06-12-2008

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For integers:

Code:

case $var in 
  "" | *[!0-9]* ) echo invalid number ;;
              * ) echo OK ;;
esac

radoulov

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