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43 lines
868 B
43 lines
868 B
#!/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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