# Grok parsing and skipping lines
**URL:** https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864
**Category:** Logstash
**Created:** [September 22, 2021, 12:25pm UTC](https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864 "2021-09-22T12:25:42Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Mira\_9](https://discuss.elastic.co/u/Mira_9)
#### Post date: [September 22, 2021, 12:25pm UTC](https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864/1 "2021-09-22T12:25:42Z")
Hey! i have to parse the output of a command linux,extract specific fields and skip some lines.I'm trying but its not working.
```auto
SSID: "#SOMB-875-LY5C"
Mode: Managed RSSI: 1 dBm SNR: 0 dB noise: -89 dBm Channel: 120
BSSID: 2C:7M:68:NC:12:Z1 Capability: ESS
Supported Rates: [1(N) 8 2(E) 48 49(C) 65 57 25]
VHT Capable:
Chanspec: 5GHz channel 106 80MHz (0xe010b)
Primary channel: 100
```
i want to extract the _ **"noise" ,"BSSID" .** _ plus _ **the two last lines** _
Any idea please?
this is my trial
```auto
%{WORD:Mode}\s+%{NOTSPACE:RSSI}\s+%{NUMBER:Value:INT}\s+%{WORD:DB}\s+%{NOTSPACE:SNR}\s+%{NUMBER:VALUE}\s+%{WORD:DB2}\s+%{NOTSPACE:noise}\s+%{NUMBER:ValueNeg:INT}\s+%{WORD:DB3}\s+%{NOTSPACE:chan}\s+%{NUMBER:valuechan:INT}\n
```
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [September 22, 2021, 11:03pm UTC](https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864/2 "2021-09-22T23:03:28Z")
I would try an approach like [this](https://discuss.elastic.co/t/issue-parsing-db2diag-log-using-grok-filter/281957/2).
---
### Author:  [@Mira\_9](https://discuss.elastic.co/u/Mira_9)
#### Post date: [September 23, 2021, 8:38am UTC](https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864/3 "2021-09-23T08:38:42Z")
unfortunately it's not working. the Grok Debugger is indicating "no matches"
```auto
"SSID : %{NOTSPACE:ssid}",
"noise : %{NOTSPACE:noise}",
"BSSID: %{NOTSPACE:bssid}",
"Chanspec : %{NOTSPACE:Chanspec}",
"Primary channel : %{GREEDYDATA:primary}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 21, 2021, 8:39am UTC](https://discuss.elastic.co/t/grok-parsing-and-skipping-lines/284864/4 "2021-10-21T08:39:22Z")
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