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30 lines
507 B
Bash
Executable File
30 lines
507 B
Bash
Executable File
#!/bin/sh
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#
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# $Id: config-dns.sh,v 1.2 2007-10-15 08:26:00 winfred Exp $
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#
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# usage: config-dns.sh [<dns1>] [<dns2>]
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#
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fname="/etc/resolv.conf"
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fbak="/etc/resolv_conf.bak"
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# in case no previous file
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touch $fname
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# backup file without nameserver part
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sed -e '/nameserver/d' $fname > $fbak
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# set primary and seconday DNS
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if [ "$1" != "" ]; then
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echo "nameserver $1" > $fname
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else # empty dns
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rm -f $fname
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fi
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if [ "$2" != "" ]; then
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echo "nameserver $2" >> $fname
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fi
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cat $fbak >> $fname
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rm -f $fbak
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