Log日志

pidcat

logcat增强工具，可以按照app包名就行筛选。

安装。执行下列命令进行安装：
```
brew install pidcat
```
筛选优酷app的log。
```
pidcat com.youku.phone
```

详细用法。

usage: pidcat [-h] [-w N] [-l {V,D,I,W,E,F,v,d,i,w,e,f}] [--color-gc]
           [--always-display-tags] [--current] [-s DEVICE_SERIAL] [-d] [-e]
           [-c] [-t TAG] [-i IGNORED_TAG] [-v] [-a]
           [package [package ...]]

 Filter logcat by package name
 positional arguments:
 package               Application package name(s)

 optional arguments:
 -h, --help            show this help message and exit
 -w N, --tag-width N   Width of log tag
 -l {V,D,I,W,E,F,v,d,i,w,e,f}, --min-level {V,D,I,W,E,F,v,d,i,w,e,f}
                         Minimum level to be displayed
 --color-gc            Color garbage collection
 --always-display-tags
                         Always display the tag name
 --current             Filter logcat by current running app
 -s DEVICE_SERIAL, --serial DEVICE_SERIAL
                     Device serial number (adb -s option)
 -d, --device          Use first device for log input (adb -d option)
 -e, --emulator        Use first emulator for log input (adb -e option)
 -c, --clear           Clear the entire log before running
 -t TAG, --tag TAG     Filter output by specified tag(s)
 -i IGNORED_TAG, --ignore-tag IGNORED_TAG
                         Filter output by ignoring specified tag(s)
 -v, --version         Print the version number and exit
 -a, --all             Print all log messages