adb shell logcat
1 需求
- 打印指定包名的log
- adb shell logcat -d -b main -s PRIVA_LOG --pid `pidof com.android.phone`
- adb shell logcat -d -b main -s PRIVA_LOG --pid=$("pidof com.android.phone")
2 语法
C:\>adb logcat --help
Usage: logcat [options] [filterspecs]
General options:
-b, --buffer= Request alternate ring buffer(s):
main system radio events crash default all
Additionally, 'kernel' for userdebug and eng builds, and
'security' for Device Owner installations.
Multiple -b parameters or comma separated list of buffers are
allowed. Buffers are interleaved.
Default -b main,system,crash,kernel.
-L, --last Dump logs from prior to last reboot from pstore.
-c, --clear Clear (flush) the entire log and exit.
if -f is specified, clear the specified file and its related rotated
log files instead.
if -L is specified, clear pstore log instead.
-d Dump the log and then exit (don't block).
--pid= Only print logs from the given pid.
--wrap Sleep for 2 hours or when buffer about to wrap whichever
comes first. Improves efficiency of polling by providing
an about-to-wrap wakeup.
Formatting:
-v, --format= Sets log print format verb and adverbs, where is one of:
brief help long process raw tag thread threadtime time
Modifying adverbs can be added:
color descriptive epoch monotonic printable uid usec UTC year zone
Multiple -v parameters or comma separated list of format and format
modifiers are allowed.
-D, --dividers Print dividers between each log buffer.
-B, --binary Output the log in binary.
Outfile files:
-f, --file= Log to file instead of stdout.
-r, --rotate-kbytes= Rotate log every kbytes. Requires -f option.
-n, --rotate-count= Sets max number of rotated logs to , default 4.
--id= If the signature for logging to file changes, then clear the
associated files and continue.
Logd control:
These options send a control message to the logd daemon on device, print its return message if
applicable, then exit. They are incompatible with -L, as these attributes do not apply to pstore.
-g, --buffer-size Get the size of the ring buffers within logd.
-G, --buffer-size= Set size of a ring buffer in logd. May suffix with K or M.
This can individually control each buffer's size with -b.
-S, --statistics Output statistics.
--pid can be used to provide pid specific stats.
-p, --prune Print prune rules. Each rule is specified as UID, UID/PID or /PID. A
'~' prefix indicates that elements matching the rule should be pruned
with higher priority otherwise they're pruned with lower priority. All
other pruning activity is oldest first. Special case ~! represents an
automatic pruning for the noisiest UID as determined by the current
statistics. Special case ~1000/! represents pruning of the worst PID
within AID_SYSTEM when AID_SYSTEM is the noisiest UID.
-P, --prune=' ...' Set prune rules, using same format as listed above. Must be quoted.
Filtering:
-s Set default filter to silent. Equivalent to filterspec '*:S'
-e, --regex= Only print lines where the log message matches where is
an ECMAScript regular expression.
-m, --max-count= Quit after printing lines. This is meant to be paired with
--regex, but will work on its own.
--print This option is only applicable when --regex is set and only useful if
--max-count is also provided.
With --print, logcat will print all messages even if they do not
match the regex. Logcat will quit after printing the max-count number
of lines that match the regex.
-t Print only the most recent lines (implies -d).
-t '
3 示例：打印指定包名的log
adb shell logcat -d -b main -s PRIVA_LOG --pid `pidof com.android.phone`
adb shell logcat -d -b main -s PRIVA_LOG --pid=$("pidof com.android.phone")
adb logcat -d -b main -s PRIVA_LOG --pid `pidof com.android.phone`
adb logcat -d -b main -s PRIVA_LOG --pid=$("pidof com.android.phone")
