errinfo(1m) USER COMMANDS errinfo(1m)
errinfo - print errno for syscall fails. Uses DTrace.
errinfo [-a|-A|-hsvZ] [-c command]
errinfo snoops syscall failures and prints the errno value and
description of the error number.
This program can help determine if applications are silently failing,
providing some details on the cause.
Since this uses DTrace, only users with root privileges can run this
-c counts - print an aggregate style report containing a frequency
count of errors
-p PID examine this PID only
examine processes with ths name only (eg, "ls")
Default output, print errors as they occur,
Print a frequency count report,
# errinfo -c
Snoop errors as they occur for "ssh" processes,
# errinfo -n ssh PP
Snoop errors for PID 81 only,
# errinfo -p 81
EXEC Program name (truncated)
System call name
ERR Value of errno
DESC Description of errno message
See the DTraceToolkit for further documentation under the Docs directory.
The DTraceToolkit docs may include full worked examples with verbose
descriptions explaining the output.
errinfo will run forever until Ctrl-C is hit.
Contains the full descriptions for the error numbers.
Brendan Gregg [Sydney, Australia]
version 1.10 May 14, 2005 errinfo(1m)