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Shell Programming and Scripting
Counting lines between two patterns
Post 302391525 by npatwardhan on Monday 1st of February 2010 03:39:09 PM
02-01-2010
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LEARN ABOUT OSX
rwbytype.d
rwbytype.d(1m) USER COMMANDS rwbytype.d(1m) NAME
rwbytype.d - read/write bytes by vnode type. Uses DTrace. SYNOPSIS
rwbytype.d DESCRIPTION
This program identifies the vnode type of read/write activity - whether that is for regular files, sockets, character special devices, etc. This is measuring at the application level, so file activity may well be cached by the system. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
This samples until Ctrl-C is hit. # rwbytype.d FIELDS
PID process ID CMD process name VNODE vnode type (describes I/O type) DIR direction, Read or Write BYTES total bytes DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
rwbytype.d will sample until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
rwbypid.d(1M), rwbbypid.d(1M), dtrace(1M) version 0.70 Jan 11, 2006 rwbytype.d(1m)