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=<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=<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=<format> Sets log print format verb and adverbs, where <format> 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=<file> Log to file instead of stdout.
-r, --rotate-kbytes=<n> Rotate log every <n> kbytes. Requires -f option.
-n, --rotate-count=<count> Sets max number of rotated logs to <count>, default 4.
--id=<id> If the signature <id> 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=<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='<list> ...' 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=<expr> Only print lines where the log message matches <expr> where <expr> is
an ECMAScript regular expression.
-m, --max-count=<count> Quit after printing <count> 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 <count> Print only the most recent <count> lines (implies -d).
-t '<time>' Print the lines since specified time (implies -d).
-T <count> Print only the most recent <count> lines (does not imply -d).
-T '<time>' Print the lines since specified time (not imply -d).
count is pure numerical, time is 'MM-DD hh:mm:ss.mmm...'
'YYYY-MM-DD hh:mm:ss.mmm...' or 'sssss.mmm...' format.
--uid=<uids> Only display log messages from UIDs present in the comma separate list
<uids>. No name look-up is performed, so UIDs must be provided as
numeric values. This option is only useful for the 'root', 'log', and
'system' users since only those users can view logs from other users.
filterspecs are a series of
<tag>[:priority]
where <tag> is a log component tag (or * for all) and priority is:
V Verbose (default for <tag>)
D Debug (default for '*')
I Info
W Warn
E Error
F Fatal
S Silent (suppress all output)
'*' by itself means '*:D' and <tag> by itself means <tag>:V.
If no '*' filterspec or -s on command line, all filter defaults to '*:V'.
eg: '*:S <tag>' prints only <tag>, '<tag>:S' suppresses all <tag> log messages.
If not specified on the command line, filterspec is set from ANDROID_LOG_TAGS.
If not specified with -v on command line, format is set from ANDROID_PRINTF_LOG
or defaults to "threadtime"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")
