OK so I wanted to know how does grep outputs to the pipe and how sort reads from it. So I run a strace over "grep blah myfile | sort" and this is what I got:
open("myfile", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=84, ...}) = 0
read(3, "blah blah and blah cause of... (4 Replies)
Hi Gurus,
I need to trace a sqlplus session using strace.
Can someone please provide me the syntax. sorry was not able to figure out by reading the man page. :-(
i tried to do as below but getting the error
xt33db006/u1/app/oracle/product/10.2.0/asm_1$ strace -f sqlplus '/as sysdba'... (0 Replies)
hi
i have an application which have a expect script. But now when I run application on other machines, it requires expect to be present on that system.
Now I have the binary of expect with all the libraries required.
The binary support for Rhel 5 version or later versions.
Can aneone tell... (2 Replies)
How to make RPM not write to RPM database if RPM fails to deploy?
IE I create an rpm spec file that contains the following
if
then
exit 1
fi
My rpm will fail at deployment, but if I do rpm -qa , I can see the rpm in the rpm db (3 Replies)
Hi,
does anyone know the equivalent command of the following in AIX :
$ strace -tp 15033
Process 15033 attached - interrupt to quit
11:28:06 gettimeofday({1257766086, 104118}, NULL) = 0
11:28:06 getrusage(RUSAGE_SELF, {ru_utime={2270, 615813}, ru_stime={0, 634903}, ...}) = 0
Thank you (6 Replies)
I need to run and monitor applications on Android Emulator. I am using the strace utility to monitor system calls. Everytime to start strace i need to manually start the application , get the process Id of the application and then give it to strace to start logging all the system calls.
So is... (20 Replies)
After checking the dependencies from below command:-
yum deplist gcc
Update:-
Now when I tried to install the very first dependency , it gave the below error, I guess something is wrong with YUM server itself :P
... (1 Reply)
Hello,
I have a RedHat machine (version 5.11) and i need to install BIND version version 9.9.7-P2 in order to fix a known BIND vulnerability CVE-2015-5477.
I downloaded the tar file from isc website but i am having trouble to install the file.
Does anybody knows a link for the rpm package of... (0 Replies)
Discussion started by: omonoiatis9
0 Replies
LEARN ABOUT OSF1
strace
strace(8) System Manager's Manual strace(8)NAME
strace - Writes STREAMS event trace messages to standard output
SYNOPSIS
/usr/sbin/strace [mod_ID sub_ID pri_level]
DESCRIPTION
The strace command gets STREAMS event trace messages from STREAMS drivers and modules via the STREAMS log driver (strlog), and writes these
messages to standard output. You can limit the messages strace receives by specifying arguments to the command. The arguments, which must
be specified together, are the following: Specifies the STREAMS module identification number. Specifies a subidentification number (often
corresponding to a minor device). Specifies a tracing priority level. The strace command will get messages of a level equal to or less
than the value in the pri_level argument. The value of the argument must be a nonnegative integer.
You can specify all as the value for any of the arguments in the strace command line. The value all indicates that there are no restric-
tions for that argument.
You can also specify multiple sets of the command's three arguments to obtain the messages from more than one driver or module.
More than one strace process can open the STREAMS log driver at a time. When you invoke strace, the log driver compares the sets of argu-
ments from the command line with actual trace messages, returning the messages that satisfy the criteria.
STREAMS event trace messages have the following format: seqnum stdtime tickstime pri_level ntfycode mod_ID sub_ID msgtext where:
The event trace sequence number. The time the message was sent, in the format hh:mm:ss. The time the message was sent, measured in
machine ticks since the last boot. The tracing priority level as defined by the STREAMS driver or module that originates the messages.
Can be either of the following indicators: Indicates that the message has also been saved in the error log. Indicates that the message
signaled a fatal error. The module identification number of the trace message source. The subidentification number of the trace message
source. The trace message text.
The strace command runs until terminated by the user.
NOTES
Running strace with several sets of arguments can negatively affect STREAMS performance, particularly for those modules and drivers sending
the messages.
Also be aware that strace may not be able to handle a large number of messages. If drivers and modules return messages to strace too
quickly, some may be lost.
EXAMPLES
To display all trace messages received from the driver or module identified by mod_ID 28, enter: strace 28 all all To display those trace
messages from the driver or module identified by mod_ID 28 and its minor devices identified by the sub_IDs 2, 3, and 4, enter: strace 28 2
all 28 3 all 28 4 all
This command line causes messages of any tracing priority level to be displayed. To display the trace messages from the same driver or
module and sub_IDs, but limited to certain priority levels, enter: strace 28 2 0 28 3 0 28 4 1 This command line specifies that messages
from driver or module 28 and sub_IDs 2 and 3 must have a tracing priority of 0, and those from sub_ID 4 must have a tracing priority equal
to or less than 1.
RELATED INFORMATION
Commands: strclean(8), strerr(8).
Interfaces: strlog(7). delim off
strace(8)