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# logcat
> 转储系统消息日志。
> 更多信息见：https://developer.android.com/studio/command-line/logcat>.
- 显示系统日志：
`logcat`
- 将系统日志写入文件：
`logcat -f {{文件路径}}`
- 显示与正则表达式匹配的行：
`logcat --regex {{正则表达式}}`