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24 lines
478 B
Text
24 lines
478 B
Text
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#!/bin/bash
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# dotrev
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# Reverse the order of substrings within a dotted string.
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# Example: deboone.nl -> nl.deboone
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while [ -n "$1" ]; do
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tmp="$1"
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REVHOSTNAME=""
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while [ -n "$tmp" ]; do
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piece="${tmp##*.}."
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tmp="${tmp%.*}"
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REVHOSTNAME="${REVHOSTNAME}${piece}"
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if ! case "$tmp" in *.*) ;; *) false;; esac; then
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REVHOSTNAME="${REVHOSTNAME}${tmp}"
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unset tmp
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unset piece
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break;
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fi
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done
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echo $REVHOSTNAME
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shift
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done
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