04-19 18:26:55.605 22750 22883 W System.err: java.lang.NoSuchFieldException
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.au.a(Unknown Source:16)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.au.a(Unknown Source:4)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.z.a(Unknown Source:880)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.z.a(Unknown Source:188)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.p.a(Unknown Source:821)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.p.a(Unknown Source:605)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.p.a(Unknown Source:11)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.d.a(Unknown Source:46)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.ak.b(Unknown Source:50)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.ak.a(Unknown Source:10)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.XMPushService$c.a(Unknown Source:8)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.XMPushService$i.run(Unknown Source:37)
04-19 18:26:55.605 22750 22883 W System.err: at com.xiaomi.push.service.g$c.run(Unknown Source:175)
04-19 18:27:24.787 23660 23685 W System.err: load vdr indoor lib success.
使用cut 我们可以实现删除上面的冗余信息
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adb logcat | grep "System.err" --line-buffered | cut -d " " -f 6-
System.err: java.lang.NoSuchFieldException
System.err: at com.xiaomi.push.au.a(Unknown Source:16)
System.err: at com.xiaomi.push.au.a(Unknown Source:4)
System.err: at com.xiaomi.push.service.z.a(Unknown Source:880)
System.err: at com.xiaomi.push.service.z.a(Unknown Source:188)
System.err: at com.xiaomi.push.service.p.a(Unknown Source:821)
System.err: at com.xiaomi.push.service.p.a(Unknown Source:605)
System.err: at com.xiaomi.push.service.p.a(Unknown Source:11)
System.err: at com.xiaomi.push.service.d.a(Unknown Source:46)
System.err: at com.xiaomi.push.service.ak.b(Unknown Source:50)
System.err: at com.xiaomi.push.service.ak.a(Unknown Source:10)
System.err: at com.xiaomi.push.service.XMPushService$c.a(Unknown Source:8)
System.err: at com.xiaomi.push.service.XMPushService$i.run(Unknown Source:37)
System.err: at com.xiaomi.push.service.g$c.run(Unknown Source:175)
按照字节切分(cut -b)
按照字节位置切分
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# 取第一个字节
[email protected]:~ $ echo "abcdef" | cut -b 1
a
# 取第二个字节
[email protected]:~ $ echo "abcdef" | cut -b 2
b
# 从1开始,0会报错
[email protected]:~ $ echo "abcdef" | cut -b 0
cut: byte/character positions are numbered from 1
Try 'cut --help' for more information.
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