grep是一个命令输出，但是如何查找特定的块呢？

我在找grep的某个特定区块

例如，我从android设备获得了以下输出：

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

我需要用grep在****中获得块，我需要哪个代码grep命令来找到特定的输出块？ 我试过了

adb shell dumpsys audio | grep{STREAM_MUSIC:，STREAM_ALARM}和 不返回任何内容adb shell dumpsys audio | grep-w STREAM_MUSIC 仅返回第一行

---

如果可以使用

awk

，则可以执行以下操作：

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

---

谢谢，非常有用，但这在grep中不可能吗？@EdgarL并非所有工具都能完成所有任务

grep

擅长查找内容，

awk

擅长处理多行。我发现使用adb shell dumpsys audio | grep-A 5流音乐我得到了相同的结果