adb logcat -c
Usage: logcat [options] [filterspecs]
options include:
-s Set default filter to silent.
Like specifying filterspec '*:S'
-f <filename> Log to file. Default is stdout
-r <kbytes> Rotate log every kbytes. Requires -f
-n <count> Sets max number of rotated logs to <count>, default 4
-v <format> Sets the log print format, where <format> is:
brief color long printable process raw tag thread
threadtime time usec
-D print dividers between each log buffer
-c clear (flush) the entire log and exit
