44 lines
868 B
Plaintext
44 lines
868 B
Plaintext
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#!/bin/bash
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# `vercomp()` is copied from: http://stackoverflow.com/a/4025065
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# Usage: vercomp <version 1> <version 2>
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# return codes:
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# 0: version 1 and version 2 are the same
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# 1: version 1 is higher
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# 2: version 2 is higher
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vercomp () {
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if [[ $1 == $2 ]]
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then
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return 0
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fi
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local IFS=.
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local i ver1=($1) ver2=($2)
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# fill empty fields in ver1 with zeros
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for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
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do
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ver1[i]=0
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done
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for ((i=0; i<${#ver1[@]}; i++))
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do
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if [[ -z ${ver2[i]} ]]
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then
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# fill empty fields in ver2 with zeros
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ver2[i]=0
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fi
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if ((10#${ver1[i]} > 10#${ver2[i]}))
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then
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return 1
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fi
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if ((10#${ver1[i]} < 10#${ver2[i]}))
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then
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return 2
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fi
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done
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return 0
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}
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vercomp $1 $2
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