26 lines
611 B
Bash
26 lines
611 B
Bash
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#!/bin/bash
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#
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# groupmerge.sh
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#
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# merge two /etc/groups together, avoiding id conflicts.
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# to be used within dockerfiles
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if [[ ! -e $1 || ! -e $2 ]]; then
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echo "usage: $0 <groupfile1> <groupfile2>"
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echo "Use groupfile1 as the basis and merges missing entries from groupfile2"
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fi
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cat $1
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echo "# merged entries:"
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cat $2 | while read grp; do
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name=$(echo $grp | cut -d ':' -f 1)
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pass=$(echo $grp | cut -d ':' -f 2)
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dgid=$(echo $grp | cut -d ':' -f 3)
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rest=$(echo $grp | cut -d ':' -f 4-)
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line=$(cat $1 | grep -E "^$name:")
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if [[ $line == "" ]]; then
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echo $name:$pass:$(($dgid + 2000)):$rest
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fi
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done
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