Tuesday, February 1, 2022

[SOLVED] grep a command output, but how to look for specific block?

Issue

I'm looking for some specific block with grep

for example I have this output from android device:

Stream volumes (device: index)
- STREAM_VOICE_CALL:
   Muted: false
   Min: 1
   Max: 5
   Current: 40000000 (default): 4
   Devices: earpiece
- STREAM_SYSTEM:
   Muted: false
   Min: 0
   Max: 7
   Current: 40000000 (default): 5
   Devices: speaker
- STREAM_RING:
   Muted: false
   Min: 0
   Max: 7
   Current: 40000000 (default): 5
   Devices: speaker
**- STREAM_MUSIC:
   Muted: false
   Min: 0
   Max: 15
   Current: 2 (speaker): 12, 4000000 (usb_headset): 3, 40000000 (default): 8
   Devices: speaker**
- STREAM_ALARM:
   Muted: false
   Min: 0
   Max: 7
   Current: 40000000 (default): 6
   Devices: speaker
- STREAM_NOTIFICATION:
   Muted: false
   Min: 0
   Max: 7
   Current: 40000000 (default): 5
   Devices: speaker
- STREAM_BLUETOOTH_SCO:
   Muted: false
   Min: 0
   Max: 15
   Current: 40000000 (default): 7
   Devices: earpiece
- STREAM_SYSTEM_ENFORCED:
   Muted: false
   Min: 0
   Max: 7
   Current: 40000000 (default): 5
   Devices: speaker
- STREAM_DTMF:
   Muted: false
   Min: 0
   Max: 15
   Current: 40000000 (default): 11
   Devices: speaker
- STREAM_TTS:
   Muted: false
   Min: 0
   Max: 15
   Current: 2 (speaker): 12, 4000000 (usb_headset): 3, 40000000 (default): 8
   Devices: speaker
- STREAM_ACCESSIBILITY:
   Muted: false
   Min: 0
   Max: 15
   Current: 2 (speaker): 12, 4000000 (usb_headset): 3, 40000000 (default): 8
   Devices: speaker

I need to get the block within ** ** with grep, which code grep command do I need to find that specific block of output? I've tried with

adb shell dumpsys audio | grep {STREAM_MUSIC:,STREAM_ALARM} and returns nothing adb shell dumpsys audio | grep -w STREAM_MUSIC returns only the first line


Solution

If you can use awk, you can do this:

awk '/- STREAM/ {f=0} /- STREAM_MUSIC:/ {f=1} f'
- STREAM_MUSIC:
   Muted: false
   Min: 0
   Max: 15
   Current: 2 (speaker): 12, 4000000 (usb_headset): 3, 40000000 (default): 8
   Devices: speaker


Answered By - Jotne
Answer Checked By - Clifford M. (WPSolving Volunteer)
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