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skip empty lines returned by iwinfo in wlNoiseFloor.sh #568

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skip empty lines returned by iwinfo in wlNoiseFloor.sh #568

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2 changes: 1 addition & 1 deletion snmp/Openwrt/wlNoiseFloor.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ fi

# Extract noise floor. Note, all associated stations have the same value, so just grab the first one
# Use tail, not head (i.e. last line, not first), as head exits immediately, breaks the pipe to cut!
noise=$(/usr/bin/iwinfo "$1" assoclist 2>/dev/null | /usr/bin/cut -s -d "/" -f 2 | /usr/bin/cut -s -d "(" -f 1 | /usr/bin/cut -s -d " " -f 2 | /usr/bin/tail -1)
noise=$(/usr/bin/iwinfo "$1" assoclist 2>/dev/null | grep -v "^$" | /usr/bin/cut -s -d "/" -f 2 | /usr/bin/cut -s -d "(" -f 1 | /usr/bin/cut -s -d " " -f 2 | /usr/bin/tail -1)

# Return snmp result
/bin/echo "$noise"