常用例子
单个 Tag 过滤
//<tag>[:priority]
//后面优先级不区分大小写,参数区分
adb logcat -s Xposed
//或者
adb logcat Xposed *:s
多个 Tag 过滤
//<tag>[:priority]
adb logcat ActivityManager:I MyApp:D *:S
grep 关键字过滤
adb logcat |grep keywords
输出到文件
adb logcat -f /sdcard/log.txt -n2 -r20 log.txt
log.txt
log.txt.1
log.txt.2
后面会会循环输出达到其中3个文件 -r 是大小
logcat
Usage: logcat [options] [filterspecs]
options include:
-s Set default filter to silent.
Like specifying filterspec '*:s'
-f <filename> Log to file. Default to stdout
-r [<kbytes>] Rotate log every kbytes. (16 if unspecified). Requires -f
-n <count> Sets max number of rotated logs to <count>, default 4
-v <format> Sets the log print format, where <format> is one of:
brief process tag thread raw time threadtime long
-c clear (flush) the entire log and exit
-d dump the log and then exit (don't block)
-t <count> print only the most recent <count> lines (implies -d)
-g get the size of the log's ring buffer and exit
-b <buffer> Request alternate ring buffer, 'main', 'system', 'radio'
or 'events'. Multiple -b parameters are allowed and the
results are interleaved. The default is -b main -b system.
-B output the log in binary
filterspecs are a series of
<tag>[:priority]
where <tag> is a log component tag (or * for all) and priority is:
V Verbose
D Debug
I Info
W Warn
E Error
F Fatal
S Silent (supress all output)
'*' means '*:d' and <tag> by itself means <tag>:v
If not specified on the commandline, filterspec is set from ANDROID_LOG_TAGS.
If no filterspec is found, filter defaults to '*:I'
If not specified with -v, format is set from ANDROID_PRINTF_LOG
or defaults to "brief"
参考文档
https://www.cnblogs.com/JianXu/p/5468839.html