10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
How to create a new mount point with 600GB and add 350 GBexisting mount point
Best if there step that i can follow or execute before i mount or add diskspace IN AIX
Thanks (2 Replies)
Discussion started by: Thilagarajan
2 Replies
2. Shell Programming and Scripting
hi,
I would like to ask or is it possible to dump a hex using dd from starting point to end point just like the "xxd -s 512 -l 512 <bin file>"
I know the redirect hexdump -C but i can't figure it out the combination options of dd.
Hope someone can share their knowledge..
Thanks in... (3 Replies)
Discussion started by: jao_madn
3 Replies
3. Shell Programming and Scripting
...when the lines use both a colon and commas to separate the parts you want read as information.
The first version of this script used cut and other non-Bash-builtins, frequently, which made it nice and zippy with little more than average processor load in GNOME Terminal but, predictably, slow... (2 Replies)
Discussion started by: SilversleevesX
2 Replies
4. UNIX for Dummies Questions & Answers
I'm trying to debug a service crash, and would like to break on an access violation - is this possible? (0 Replies)
Discussion started by: ctote
0 Replies
5. Programming
Hey everyone,
Is there a way to make dbx break on access violations? (2 Replies)
Discussion started by: ctote
2 Replies
6. Programming
Hey everyone,
I have a process that is crashing, and I'd like to have some way to see where it crashes. Is this possible? (2 Replies)
Discussion started by: ctote
2 Replies
7. Programming
I have tried lots of stuff but i can't get it working, i have also found a Thread in this Forum about it but it didn't describe how the program has to be run ect.
My issue is that i want to run a program with multiple arguments eg.
./myprog arg1 arg2 arg3 arg4 arg5
with dbx, but i cant get... (8 Replies)
Discussion started by: alcatros
8 Replies
8. Shell Programming and Scripting
Does anyone know of a way to set up some sort of marker in a shell script, from which the script can be restarted..
e.g.
MARKER1
check env variable MAX_RETRY
if var not set then
while true
do
check var
if set go to MARKER1
... (2 Replies)
Discussion started by: handak9
2 Replies
9. UNIX for Advanced & Expert Users
Anyone know of a guide or instructions for Solaris
I got to configure a SBUS HBA to talk to a tape robot.
I have done this on a switch but not point to point.
just going HBA >>>>> TAPE Fibre simple two nodes
Kie (6 Replies)
Discussion started by: kie
6 Replies
10. UNIX for Dummies Questions & Answers
I have just install apache 1.3.22 on my solaris 2.6 with virtualhost which is working fine but I want to configure my httpd.conf file so that when I type in my url on an internet browsers it goes straight to my home page.
eg www.mydomain.com should display my home page
at the monent when I type... (4 Replies)
Discussion started by: hassan2
4 Replies
core(4) Kernel Interfaces Manual core(4)
NAME
core - Format of memory image file
SYNOPSIS
#include <sys/core.h>
DESCRIPTION
The system writes out a memory image of a terminated process when any of various errors occur. See sigaction(2) for the list of reasons;
the most common are memory violations, illegal instructions, bus errors, and user-generated quit signals. The memory image is called core
and is written in the process's working directory (provided that it can be; normal access controls apply).
The maximum size of a core file is limited. If a process exceeds this limit, any remaining data to be written to the core file is lost.
Default behavior is for the system to create a file named core, overwriting any other file with that name in the working directory.
You can enable enhanced core file naming, which causes the system to create unique names for core files. Core files are not overwritten,
thereby preventing loss of valuable debugging information when the same program fails mulitiple times (and perhaps for mulitple reasons).
When enhanced core file naming is enabled, the system produces core files with names in the following format:
core.program_name.host_name.numeric_tag The literal string core. Up to sixteen characters taken from the program name as shown by the ps
command. The first portion of the system's network host name, or up to 16 characters of the host name, taken from the part of the host
name that precedes the first dot. This tag is assigned to the core file to make it unique among all of the core files generated by a pro-
gram on a host. The maximum value for this tag, and thus the maximum number of core files for this program and host, is set by a system
configuration parameter.
Note the tag is not a literal version number. The system selects the first available unique tag for the core file. For example, if a
program's core files have tags .0, .1, and .3, the system uses tag .2 for the next core file it creates for that program. If the
system-configured limit for core file instances is reached, the system will not create any more core files for that program/host
combination. By default, the system can create up to 16 versions of a core file.
For example, the fourth core file generated on host buggy.net.ooze.com by the program dropsy would be: core.dropsy.buggy.3
Enhanced core file naming can be enabled at the system level or the program level: At the system level, you can enable enhanced core file
naming by setting the enhanced-core-name system configuration variable to 1 in the proc subsystem: proc:
enhanced-core-name = 1 At the program level, you can enable enhanced core file naming by calling the uswitch system call with the
USW_CORE flag set. See the EXAMPLE section.
The system manager can limit the number of unique core file versions that a program can create on a specific host system by setting the
system configuration variable enhanced-core-max-versions to the desired value: proc:
enhanced-core-name = 1
enhanced-core-max-versions = 8 The miminum value is 1, the maximum is 99,999, and the default is 16.
EXAMPLE
The following example shows a code fragment that calls the uswitch system call with the USW_CORE flag set: #include <signal.h> #include
<sys/uswitch.h>
/*
* Request enhanced core file naming for
* this process then create a core file.
*/ main() {
long uval = uswitch(USC_GET, 0);
uval = uswitch(USC_SET, uval | USW_CORE);
if (uval < 0) {
perror("uswitch");
exit(1);
}
raise(SIGQUIT); }
In general, the debugger dbx(1) is sufficient to deal with core images.
RELATED INFORMATION
sigaction(2), uswitch(2), sysconfigdb(8), dbx(1) delim off
core(4)