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Full Discussion: sniff /dev/tty
Top Forums Programming sniff /dev/tty Post 302165749 by wayward on Friday 8th of February 2008 04:51:12 PM
Old 02-08-2008
sniff /dev/tty

hello all,

Being root, I would like to log user activity (also multiple root activity), i don't really like
history file based logging, lets assume that users have access to their .profile.

I would like to write a monitoring daemon in C that would capture /dev/ttys,
so I need to do a non-blocking read to the stream ...

any ideas?

thanks a lot. Smilie
 

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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)
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