-s？ Set the default filter to mute.
For example, specify filterspec '*:s'
?
Where & lt tag> is a log component tag (or * stands for all), and the priority is:
? V lengthy
? D debugging
? I. Information
? W warning
? error
? fatal
? Silent (suppress all output)
*' means' *:d' and < label & gt, which itself means < label & gt: five.
If not specified on the command line, the filterspec will be set from ANDROID_LOG_TAGS.
If the filterspec is not found, the filter defaults to' *:I'
If it is not specified with -v, the format is set from ANDROID_PRINTF_LOG.
Or "short" by default.
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Title options include:
-s？ Set the default filter to mute.
? For example, specify filterspec '*:s'
-f & lt； File name & gt? Record to file. Default is standard output.
-r[& lt； Kilobyte >]? The log is rotated every kilobyte. (16 if not specified). Need -f
-n & lt； count & gt？ Set the maximum number of rotation logs to & ltcount & gt, and the default is 4.
-M & lt； 1，0 & gt； Set the enable copy (move) log to oms_log_path.
-v & lt； Format & gt Sets the log print format, where & lt format & gt is one of the following: Short process marks thread original time and thread time is long.
-c？ Clear (refresh) the entire log and exit.
-Dee? Dump the log and exit (do not block)
-g？ Get the size of the circular buffer of the log and exit.
-b & lt； Buffer & gt requests a spare ring buffer.
? (Master (default), Broadcast, Event)
-B? Output log in binary.
Filter specifications are a series of
& lt label & gt[: priority]
Where & lt tag> is a log component tag (or * stands for all), and the priority is:
V lengthy
D debugging
I. Information
W warning
error
fatal
Silent (suppress all output)
*' means' *:d' and < label & gt, which itself means < label & gt: five.
If not specified on the command line, the filterspec will be set from ANDROID_LOG_TAGS.
If the filterspec is not found, the filter defaults to' *:I'
If it is not specified with -v, the format is set from ANDROID_PRINTF_LOG.
Or "short" by default.
Example:
Check the radio log
Logcat -b radio
Me /RILC (? 46): 39 0d 0a
Me /RILC (? 46):AT[0]& lt； +ECIND: 1， 16，99
Me /RILC (? 46):AT[0]& lt； +ECSQ: 16.99
Me /RILC (? 46):& lt； & lt& lt& ltpCh[0] ...
Me /RILC (? 46):0d 0a 2b 45 43 49 4e 44 3a 20 3 1 2c 3 1 37 2c 39 39 0d 0a 0a 2b 45 43 53 5 1 3a 20 3 1 37 2c 39
Me /RILC (? 46): 39 0d 0a
Me /RILC (? 46):AT[0]& lt； +ECIND: 1， 17，99
Me /RILC (? 46):AT[0]& lt； +ecsq:17,99 View the above warning log.
logcat *:w
e/sensor manager( 102):smjni-JNI data _ open
E/(？ 49): b433 6 155
E/(？ 49): b433 6 157
E/gralloc (102): [unregister] handle 0x2debd0 is still locked.
Service with battery (102): Get battery health status [0] "Charging"
Service with battery (102): Get battery health =' good'
Service with battery (102): Get battery health status [0] "Charging"
With battery service (102): Get the battery health =' good' filter to view the log of dalvikvm.
Logcat -s dalvikvm or logcat dalvikvm *:s
D/dalvikvm( 257): GC released 1 19 1 objects/343344 bytes in 65 milliseconds.
D/dalvikvm( 257): GC released 1 19 1 object/343400 bytes in 64 milliseconds.
D/dalvikvm( 257): GC released 1 19 1 object/343368 bytes in 65 milliseconds.
D/dalvikvm( 257): GC released 1 19 1 objects/3434 16 bytes in 70 milliseconds.
D/dalvikvm( 257): GC released 1 19 1 object/343384 bytes in 64 milliseconds.
Note: the filtering method of logcat is a bit weird. You don't just specify labels and priorities to filter. You must mute all tags, and the tag filtering set on this basis will be successful.
Therefore, logcat appname:v cannot successfully filter logs. Filter logs for multiple applications.
logcat -s dalvikvm vold
D/vold(？ 43): door_sock= 10
D/vold(？ 43): fw_sock=7
D/vold(？ 43): uevent_sock=6
D/dalvikvm( 257): GC released 1 19 1 object/343384 bytes in 76 milliseconds.
D/dalvikvm( 257): GC released 1 19 1 object/343368 bytes in 8 1 millisecond.
D/dalvikvm( 257): GC released 1 19 1 object/343400 bytes in 64 milliseconds.
D/vold(？ 43): Select the result = 1log and save it to a file.
logcat & gt 1 . txt(" & gt； Is the data flow guide symbol of windows)
I tried to use the-f option, but I got an error.
logcat -f 1.txt
Unable to open output file: read-only file system.