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Full Discussion: How to compare version values in shell script?
Top Forums Shell Programming and Scripting How to compare version values in shell script? Post 302640131 by methyl on Monday 14th of May 2012 07:24:58 AM
Old 05-14-2012
What Operating System and version are you running and what Shell are you using?

Code:
# String comparison. This is not a numeric comparison
if [ "2.0" = "2.0" ]
then
      echo "1"
else
      echo "0"
fi

The above does not work for "greater than" comparisons of version numbers. To do that, you would need to break the version string into numeric components and compare each component one-by-one. You'd probably have to normalise each version number for the comparision (i.e. 1.0 becomes say 1.0.0.0.0). This script is going to get quite complicated.
Last edited by methyl; 05-14-2012 at 08:41 AM..
 

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