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Update external-ip.sh, only output on success 

change sed pattern to only match when GetExternalIPAaddress succeeds and output nothing if it fails

$ upnpc -s | grep ExternalIPAddress | sed 's/[^0-9\.]//g'
.3
$ upnpc -s | grep ExternalIPAddress 
GetExternalIPAddress failed. (errorcode=-3)
$ upnpc -s | sed -n -e 's/^ExternalIPAddress = \([0-9.]*\)$/\1/p'
$
This commit is contained in:
DQ 2017-09-28 15:14:22 -07:00 committed by GitHub
parent f7ec37d92f
commit 4afc0edbe3
1 changed files with 1 additions and 1 deletions
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miniupnpc/external-ip.sh
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@ -1,4 +1,4 @@
#!/bin/sh
# $Id: external-ip.sh,v 1.1 2010/08/05 12:57:41 nanard Exp $
# (c) 2010 Reuben Hawkins
upnpc -s | grep ExternalIPAddress | sed 's/[^0-9\.]//g'
upnpc -s | sed -n -e 's/^ExternalIPAddress = \([0-9.]*\)$/\1/p'