Overview
This article is intended for use by any Unix/DBA Administrator who needs to monitor trace information from a UNIX process. For a more detailed look at the “truss” command using Sun Solaris, check out: (Using the “truss” command in Solaris)
How to Trace Unix System Calls for a Process
The following platforms support a trace utility that can be used to identify what a process is doing:
| O/S Version | Trace Utility |
| Sun Solaris 2.x, Unixware 7.0 |
truss, e.g.:
Unixware 7.0
$ truss -aefo <output file> <executable>
Solaris
$ truss -rall -wall -p <UNIX pid>
|
| HP/UX 11 |
tusc, e.g.: $ tusc -afpo <output file> <pid> <executable> |
| IBM AIX 4.x |
sctrace, e.g.: $ sctrace -Amo <output file> <executable> |
| Linux |
strace, e.g.: $ strace -fo <output file> <executable> $ strace -p <UNIX pid> |
| SGI IRIX 6.x |
par, e.g.: $ par -siSSo <output file> <executable> |
| Compaq Tru64 Unix |
trace, e.g.: $ trace -fo <output file> <executable> |
| Sequent Dynix/PTX |
truss, e.g.: $ truss -aefo <output file> <executable> |