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adb logcat 命令行用法

發(fā)布時(shí)間：2025/3/21 编程问答 40 豆豆

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本文為轉(zhuǎn)載。

作者?:萬(wàn)境絕塵??轉(zhuǎn)載請(qǐng)著名出處

eclipse 自帶的 LogCat 工具太垃圾了, 開(kāi)始用 adb logcat 在終端查看日志;

轉(zhuǎn)載地址：http://blog.csdn.net/tumuzhuanjia/article/details/39555445

1. 解析 adb logcat 的幫助信息

在命令行中輸入?adb logcat --help?命令, 就可以顯示該命令的幫助信息;

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octopus@octopus:~$?adb?logcat?--help??

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"??

adb logcat 命令格式?: adb logcat [選項(xiàng)] [過(guò)濾項(xiàng)], 其中選項(xiàng) 和過(guò)濾項(xiàng) 在中括號(hào) [] 中, 說(shuō)明這是可選的;

(1) 選項(xiàng)解析

選項(xiàng)解析?:?

--?"-s"選項(xiàng)?: 設(shè)置輸出日志的標(biāo)簽, 只顯示該標(biāo)簽的日志;

--"-f"選項(xiàng)?: 將日志輸出到文件, 默認(rèn)輸出到標(biāo)準(zhǔn)輸出流中, -f 參數(shù)執(zhí)行不成功;

--"-r"選項(xiàng)?: 按照每千字節(jié)輸出日志, 需要 -f 參數(shù), 不過(guò)這個(gè)命令沒(méi)有執(zhí)行成功;

--"-n"選項(xiàng)?: 設(shè)置日志輸出的最大數(shù)目, 需要 -r 參數(shù), 這個(gè)執(zhí)行感覺(jué) 跟 adb logcat 效果一樣;

--"-v"選項(xiàng)?: 設(shè)置日志的輸出格式, 注意只能設(shè)置一項(xiàng);

--"-c"選項(xiàng)?: 清空所有的日志緩存信息;

--"-d"選項(xiàng)?: 將緩存的日志輸出到屏幕上, 并且不會(huì)阻塞;

--"-t"選項(xiàng)?: 輸出最近的幾行日志, 輸出完退出, 不阻塞;

--"-g"選項(xiàng)?: 查看日志緩沖區(qū)信息;

--"-b"選項(xiàng)?: 加載一個(gè)日志緩沖區(qū), 默認(rèn)是 main, 下面詳解;

--"-B"選項(xiàng)?: 以二進(jìn)制形式輸出日志;

輸出指定標(biāo)簽內(nèi)容?:?

--?"-s"選項(xiàng)?: 設(shè)置默認(rèn)的過(guò)濾器, 如我們想要輸出 "System.out" 標(biāo)簽的信息, 就可以使用adb logcat -s System.out?命令;

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octopus@octopus:~$?adb?logcat?-s?System.out??

---------?beginning?of?/dev/log/system??

---------?beginning?of?/dev/log/main??

I/System.out(22930):?GSM?-91??

I/System.out(22930):?SignalStrength?issssssssss?:?-91??

I/System.out(22930):?GSM?-91??

I/System.out(22930):?SignalStrength?issssssssss?:?-91??

I/System.out(22930):?Supervisor?Thread??

I/System.out(22930):?Got?run?mode??

輸出日志信息到文件?:?

--?"-f"選項(xiàng)?: 該選向后面跟著輸入日志的文件, 使用adb logcat -f /sdcard/log.txt?命令, 注意這個(gè)log文件是輸出到手機(jī)上，需要指定合適的路徑。

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octopus@octopus:~$?adb?logcat?-f /sdcard/log.txt???

這個(gè)參數(shù)對(duì)對(duì)不能一直用電腦連著手機(jī)收集日志的場(chǎng)景非常有用，其實(shí)android shell下也有一個(gè)相同參數(shù)的logcat命令。使用如下命令可以執(zhí)行后斷開(kāi)PC和手機(jī)持續(xù)收集LOG。

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shell@pc$?adb?shell??

shell@android$?logcat?-f?/sdcard/log.txt?&???#這里的&符號(hào)表示后臺(tái)執(zhí)行，別少了。??

shell@android$?exit??

注：

（1）以上shell@pc$ 指在pc的shell終端執(zhí)行后邊的命令， shell@android$ 表示在手機(jī)shell中執(zhí)行后邊的命令l

（2）一定注意合適的時(shí)候需要停止掉以上命令，否則再次使用相同命令的時(shí)候，就會(huì)有兩個(gè)logcat寫(xiě)同一個(gè)文件了

????????? 停止方法:? adb shell kill -9 <logcat_pid>?????????

?????????? 其中l(wèi)ogcat_pid 通過(guò) 如下命令獲取

?????????? adb shell ps | grep logcat????????? # linux 平臺(tái)

?????????? adb shell ps | findstr "logcat" ?? #Windows平臺(tái)

--?">"輸出?: ">" 后面跟著要輸出的日志文件, 可以將 logcat 日志輸出到文件中, 使用adb logcat > log?命令, 使用more log?命令查看日志信息;

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octopus@octopus:~$?adb?logcat?>?log??

^C??

octopus@octopus:~$?more?log??

---------?beginning?of?/dev/log/system??

V/ActivityManager(??500):?We?have?pending?thumbnails:?null??

V/ActivityManager(??500):?getTasks:?max=1,?flags=0,?receiver=null??

V/ActivityManager(??500):?com.android.settings/.Settings:?task=TaskRecord{42392278?#448?A?com.android.settings?U?0}??

V/ActivityManager(??500):?We?have?pending?thumbnails:?null??

--?" -d -f <log>" 組合命令：可以將日志保存到手機(jī)上的指定位置，對(duì)不能一直用電腦連著手機(jī)收集日志的場(chǎng)景非常有用。

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adb?logcat?-d?-v?/sdcard/mylog.txt??

指定 logcat 的日志輸出格式?:?

--?"-v"選項(xiàng)?: 使用adb logcat -v time?命令, 可以啥看日志的輸出時(shí)間;

??????????????使用adb logcat -v threadtime?命令, 可以啥看日志的輸出時(shí)間和線程信息;

--?"brief"格式?: 這是默認(rèn)的日志格式" 優(yōu)先級(jí) / 標(biāo)簽 (進(jìn)程ID) : 日志信息 ", 使用adb logcat -v prief命令;

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octopus@octopus:~$?adb?logcat?-v?brief??

---------?beginning?of?/dev/log/system??

D/PowerManagerService(??500):?handleSandman:?canDream=true,?mWakefulness=Awake??

D/PowerManagerService(??500):?releaseWakeLockInternal:?lock=1101267696,?flags=0x0??

--? "process"格式 ?:? " 優(yōu)先級(jí) (進(jìn)程ID) : 日志信息 " , 使用 adb logcat -v process ?命令;

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octopus@octopus:~$?adb?logcat?-v?process??

---------?beginning?of?/dev/log/system??

D(??500)?MobileDataStateReceiver?received:?ACTION_ANY_DATA_CONNECTION_STATE_CHANGED_MOBILE?[wap]??(MobileDataStateTracker)??

V(??500)?Broadcast:?Intent?{?act=android.intent.action.ANY_DATA_STATE_MOBILE?flg=0x10?(has?extras)?}?ordered=true?userid=0??(ActivityManager)??

D(??500)?wap:?Intent?from?SIM?0,?current?SIM?0,?current?DataState?DISCONNECTED??(MobileDataStateTracker)??

D(??500)?wap:?wap?setting?isAvailable?to?false??(MobileDataStateTracker)??

D(??500)?wap:?Received?state=DISCONNECTED,?old=DISCONNECTED,?reason=dataDetached??(MobileDataStateTracker)??

D(??500)?BDC-Calling?finishReceiver:?IIntentReceiver=41c46ba0??(ActivityThread)??

--? "tag"格式 ?:? " 優(yōu)先級(jí) / 標(biāo)簽 : 日志信息" , 使用 adb logcat -v tag ?命令;

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octopus@octopus:~$?adb?logcat?-v?tag??

---------?beginning?of?/dev/log/system??

I/PowerManagerService:?setBrightness?mButtonLight?0.??

D/PowerManagerService:?updateScreenStateLocked:?mDisplayReady=true,?newScreenState=2,?mWakefulness=1,?mWakeLockSummary=0x1,?mUserActivitySummary=0x1,?mBootCompleted=true??

D/PowerManagerService:?handleSandman:?canDream=true,?mWakefulness=Awake??

--? "thread"格式 ?:? " 優(yōu)先級(jí) ( 進(jìn)程ID : 線程ID) 標(biāo)簽 : 日志內(nèi)容 " , 使用 adb logcat -v tag ?命令;

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octopus@octopus:~$?adb?logcat?-v?thread??

---------?beginning?of?/dev/log/system??

V(??500:?2141)?getTasks:?max=1,?flags=0,?receiver=null??

V(??500:?2141)?com.lewa.launcher/.Launcher:?task=TaskRecord{41dccc20?#425?A?com.lewa.launcher?U?0}??

V(??500:?2141)?We?have?pending?thumbnails:?null??

V(??500:?2140)?getTasks:?max=1,?flags=0,?receiver=null??

--? "raw"格式 ?: 只輸出日志信息, 不附加任何其他信息, 如優(yōu)先級(jí) 標(biāo)簽等, 使用 adb logcat -v raw ?命令;

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octopus@octopus:~$?adb?logcat?-v?raw??

---------?beginning?of?/dev/log/system??

notifications?are?enabled?for?com.kindroid.security??

Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??

Native?set?alarm?:Alarm{41e1ca00?type?3?com.kindroid.security}??

reset?poweroff?alarm?none??

--? "time"格式? :? "日期時(shí)間優(yōu)先級(jí) / 標(biāo)簽 (進(jìn)程ID) : 進(jìn)程名稱 : 日志信息 " , 使用 adb logcat -v time ?命令;

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octopus@octopus:~$?adb?logcat?-v?time??

---------?beginning?of?/dev/log/system??

04-25?17:18:13.019?V/ActivityManager(??500):?Broadcast?sticky:?Intent?{?act=android.intent.action.SIG_STR?flg=0x10?(has?extras)?}?ordered=false?userid=-1??

04-25?17:18:13.157?V/NotificationService(??500):?enqueueNotificationInternal:?pkg=com.kindroid.security?id=1020?notification=Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??

04-25?17:18:13.158?V/NotificationService(??500):?notifications?are?enabled?for?com.kindroid.security??

04-25?17:18:13.158?V/NotificationService(??500):?Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??

04-25?17:18:13.555?V/ActivityManager(??500):?getTasks:?max=1,?flags=0,?receiver=null??

--? "long"格式 : " [ 日期時(shí)間進(jìn)程ID : 線程ID 優(yōu)先級(jí) / 標(biāo)簽] 日志信息 " , 輸出以上提到的所有的頭信息, 使用 adb logcat -v long ?命令;

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octopus@octopus:~$?adb?logcat?-v?long??

---------?beginning?of?/dev/log/system??

[?04-25?17:21:18.118???500:0x2fe?V/ActivityManager?]??

We?have?pending?thumbnails:?null??

[?04-25?17:21:18.696???593:0x251?W/ActivityThread?]??

Content?provider?com.android.providers.telephony.TelephonyProvider?already?published?as?telephony??

[?04-25?17:21:19.119???500:0x396?V/ActivityManager?]??

getTasks:?max=1,?flags=0,?receiver=null??

清空日志緩存信息 ?: 使用? adb logcat -c ?命令, 可以將之前的日志信息清空, 重新開(kāi)始輸出日志信息;

將緩存日志輸出 ?: 使用? adb logcat -d ?命令, 輸出命令, 之后推出命令, 不會(huì)進(jìn)行阻塞;

輸出最近的日志?: 使用adb logcat -t 5?命令, 可以輸出最近的5行日志, 并且不會(huì)阻塞;

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octopus@octopus:~$?adb?logcat?-t?5??

---------?beginning?of?/dev/log/system??

---------?beginning?of?/dev/log/main??

W/ADB_SERVICES(10028):?adb:?unable?to?open?/proc/10028/oom_adj??

D/dalvikvm(23292):?threadid=11:?created?from?interp??

D/dalvikvm(23292):?start?new?thread??

D/dalvikvm(23292):?threadid=11:?notify?debugger??

D/dalvikvm(23292):?threadid=11?(Thread-24538):?calling?run()??

octopus@octopus:~$???

查看日志緩沖區(qū)信息 ?: 使用? adb logcat -g ?命令;

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octopus@octopus:~$?adb?logcat?-g??

/dev/log/main:?ring?buffer?is?256Kb?(255Kb?consumed),?max?entry?is?5120b,?max?payload?is?4076b??

/dev/log/system:?ring?buffer?is?256Kb?(255Kb?consumed),?max?entry?is?5120b,?max?payload?is?4076b??

octopus@octopus:~$???

加載日志緩沖區(qū) ?: 使用? adb logcat -b 緩沖區(qū)類型 ?命令;

--?Android中的日志緩沖區(qū)?: system緩沖區(qū) - 與系統(tǒng)相關(guān)的日志信息, radio緩沖區(qū) - 廣播電話相關(guān)的日志信息, events緩沖區(qū) - 事件相關(guān)的日志信息, main緩沖區(qū) - 默認(rèn)的緩沖區(qū);

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octopus@octopus:~$?adb?logcat?-b?radio?-t?5??

D/PHONE???(23599):?[GeminiDataSubUtil]?UAPP_C6-4??

D/GSM?????(23599):?[GDCT][simId1]apnType?=?default??

D/GSM?????(23599):?[GDCT][simId1]isDataAllowed:?not?allowed?due?to?-?gprs=?1?-?SIM?not?loaded?-?desiredPowerState=?false??

D/GSM?????(23599):?[GDCT][simId1]isDataPossible(default):?possible=false?isDataAllowed=false?apnTypePossible=true?apnContextisEnabled=true?apnContextState()=IDLE??

I/MUXD????(23591):?[gsm0710muxd]?3426:main():?Frames?received/dropped:?18242/0??

octopus@octopus:~$???

octopus@octopus:~$?adb?logcat?-b?main?-t?5??

D/NotificationService(??500):?notification.sound=null??

D/NotificationService(??500):?mDmLock=false??

I/ATCIJ???(16576):?Couldn't?find?'atci-serv-fw'?socket;?retrying?after?timeout??

W/ADB_SERVICES(??246):?create_local_service_socket()?name=shell:export?ANDROID_LOG_TAGS=""?;?exec?logcat?-b?main?-t?5??

W/ADB_SERVICES(16815):?adb:?unable?to?open?/proc/16815/oom_adj??

octopus@octopus:~$???

octopus@octopus:~$?adb?logcat?-b?system?-t?5??

D/PowerManagerService(??500):?updateScreenStateLocked:?mDisplayReady=true,?newScreenState=0,?mWakefulness=0,?mWakeLockSummary=0x1,?mUserActivitySummary=0x0,?mBootCompleted=true??

D/PowerManagerService(??500):?handleSandman:?canDream=false,?mWakefulness=Asleep??

V/NotificationService(??500):?enqueueNotificationInternal:?pkg=com.kindroid.security?id=1020?notification=Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??

V/NotificationService(??500):?notifications?are?enabled?for?com.kindroid.security??

V/NotificationService(??500):?Assigned?score=0?to?Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])??

octopus@octopus:~$???

octopus@octopus:~$?adb?logcat?-b?event?-t?5??

Unable?to?open?log?device?'/dev/log/event':?No?such?file?or?directory??

octopus@octopus:~$?adb?logcat?-b?events?-t?5??

I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??

I/notification_enqueue(??500):?[com.kindroid.security,1020,NULL,0,Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])]??

I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??

I/notification_enqueue(??500):?[com.kindroid.security,1020,NULL,0,Notification(pri=0?contentView=com.kindroid.security/0x7f030052?vibrate=null?sound=null?defaults=0x0?flags=0x2?kind=[null])]??

I/notification_cancel(??500):?[com.kindroid.security,1026,NULL,0,0,64]??

octopus@octopus:~$???

以二進(jìn)制形式輸出日志 ?: 使用? adb logcat -B ?命令;

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octopus@octopus:~$?adb?logcat?-B??-t?5??

O��_�3ZS�4gps_mt3326nmea_reader_parse:?line?=?1218GPS?get?accuracy?failed,?fix?mode:1??

^��_�3ZS�=gps_mt3326nmea_reader_addc:?line?=?1331the?structure?include?nmea_cb?address?is?0x658cc8e8??

H��_�3ZSEGEgps_mt3326nmea_reader_addc:?line?=?1332nmea_cb?address?is?0x5d2fe279??

i��3ZS�)>ADB_SERVICEScreate_local_service_socket()?name=shell:export?ANDROID_LOG_TAGS=""?;?exec?logcat?-B?-t?5??

7*E*E�3ZSo�YADB_SERVICESadb:?unable?to?open?/proc/17706/oom_adj??

(2) 過(guò)濾項(xiàng)解析

過(guò)濾項(xiàng)格式?:?<tag>[:priority] , 標(biāo)簽:日志等級(jí), 默認(rèn)的日志過(guò)濾項(xiàng)是 " *:I " ;

--?V?: Verbose (明細(xì));

--?D?: Debug (調(diào)試);

--?I?: Info (信息);

--?W?: Warn (警告);

--?E?: Error (錯(cuò)誤);

--?F: Fatal (嚴(yán)重錯(cuò)誤);

--?S?: Silent(Super all output) (最高的優(yōu)先級(jí), 可能不會(huì)記載東西);

過(guò)濾指定等級(jí)日志?: 使用?adb logcat 10 *:E?命令, 顯示 Error 以上級(jí)別的日志;

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octopus@octopus:~$?adb?logcat?*:E??

Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??

---------?beginning?of?/dev/log/main??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/dalvikvm(??756):?GC_CONCURRENT?freed?1809K,?27%?free?19489K/26695K,?paused?16ms+5ms,?total?109ms??

E/WifiHW??(??441):?wifi_send_command?:?SCAN?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/dalvikvm(??756):?GC_CONCURRENT?freed?1820K,?27%?free?19490K/26695K,?paused?16ms+3ms,?total?102ms??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

過(guò)濾指定標(biāo)簽等級(jí)日志?: 使用?adb logcat WifiHW:D *:S?命令進(jìn)行過(guò)濾;

--?命令含義?: 輸出10條日志, 日志是標(biāo)簽為?WifiHW, 并且優(yōu)先級(jí) Debug(調(diào)試) 等級(jí)以上的級(jí)別的日志;

--注意 *:S?: 如果沒(méi)有 *S 就會(huì)輸出錯(cuò)誤;

[plain]?view plaincopy

octopus@octopus:~$?adb?logcat?WifiHW:D?*:S??

Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??

---------?beginning?of?/dev/log/main??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

可以同時(shí)設(shè)置多個(gè)過(guò)濾器?: 使用adb logcat WifiHW:D dalvikvm:I *:S?命令,?輸出?WifiHW 標(biāo)簽的 Debug 以上級(jí)別和?dalvikvm 標(biāo)簽的 Info 以上級(jí)別的日志;

[plain]?view plaincopy

octopus@octopus:~$?adb?logcat?WifiHW:D?dalvikvm:I?*:S???

Note:?log?switch?off,?only?log_main?and?log_events?will?have?logs!??

---------?beginning?of?/dev/log/main??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/dalvikvm(??756):?GC_CONCURRENT?freed?1820K,?27%?free?19490K/26695K,?paused?17ms+2ms,?total?110ms??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/dalvikvm(??756):?GC_CONCURRENT?freed?1810K,?27%?free?19489K/26695K,?paused?17ms+5ms,?total?108ms??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

2. 使用管道過(guò)濾日志

(1) 過(guò)濾固定字符串

過(guò)濾固定字符串?: 只要命令行出現(xiàn)的日志都可以過(guò)濾, 不管是不是標(biāo)簽;

--?命令?:?adb logcat | grep Wifi?;

[plain]?view plaincopy

octopus@octopus:~$?adb?logcat?|?grep?Wifi??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?AP_SCAN?1?;?interface?index=0;??

E/WifiHW??(??441):?wifi_send_command?:?SCAN_RESULTS?;?interface?index=0;??

過(guò)濾字符串忽略大小寫(xiě)?:?adb logcat | grep -i wifi?;

(2) 使用正則表達(dá)式匹配

分析日志?: 該日志開(kāi)頭兩個(gè)字符是 "V/", 后面開(kāi)始就是標(biāo)簽, 寫(xiě)一個(gè)正則表達(dá)式 "^..ActivityManager", 就可以匹配日志中的 "V/ActivityManager" 字符串;

[plain]?view plaincopy

V/ActivityManager(??574):?getTasks:?max=1,?flags=0,?receiver=null??

正則表達(dá)式過(guò)濾日志: 使用上面的正則表達(dá)式組成命令?adb logcat | grep "^..Activity"?;

作者?:?萬(wàn)境絕塵??轉(zhuǎn)載請(qǐng)著名出處

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