如何从当前时间戳获取shell输出。Linux、unix

Question

在许多shell命令中，输出是连续的事件流，例如系统日志。我只需要查看当前或当前系统时间的输出。下面是我从adb logcat获得程序输出，

09-03 17:12:04.562   479   957 I ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 1230
09-03 17:12:04.687   479  1030 I ActivityManager: Start proc com.amazon.mShop.android for activity com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: pid=19164 uid=10158 gids={1006, 3003}
09-03 17:12:05.593   479   912 I ActivityManager: Starting: Intent { dat=?paramSuggestionText=cell%20phone flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:12:05.796   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +186ms (total +1s119ms)
09-03 17:12:08.601   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: +3s925ms
09-03 17:12:08.601   479   620 I ActivityManager: Resumed Activity: com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity totalTime: 4037 ms
09-03 17:13:35.742   479   957 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity } from pid 19164
09-03 17:13:36.007   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity: +222ms
09-03 17:13:53.328   479   957 I ActivityManager: Starting: Intent { dat=?&paramSuggestionFilters=s%3An%3A%2C%3A4991425011%0As%3An%3A%2C%3A4991426011%0As%3An%3A%2C%3A5088769011%0As%3An%3A%2C%3A5263615011&paramDepartmentName=Programs flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:13:53.484   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +145ms

它是一个连续的流，显示从系统启动开始的事件，但我只需要来自当前系统时间的日志。那么，我如何才能做到这一点呢？

Answer 1

我的问题用logcat -c选项解决了。更一般的解决方案是使用tail -f命令行选项。虽然它不是非常准确，但它是有效的。

Answer 2

根据adb手册，可以通过两个步骤完成此操作：

1. 使用logcat -c
2. Proceed清除日志，并使用常规logcat call

进行持续的日志监控

如果应该将这两者结合在一起，我想运行logcat -c && logcat将是解决方案。