08-14-2009
There are hard limits and soft limits. Hard limits are changed by root only and represent upper limits. They are stored in the stanza file "/etc/security/limits".
A non-root user can change the "soft limits" of his own account using the "ulimit" command, but only within the "hard limits" set by root. There is no reboot needed to change it, not even a new session (you do not have to log off/log on again).
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
How do I filter a long report, with the "STARTWORD" and "STOPWORD" as the variables to use in my awk command, to print the whole data segment that only contains the matched start/stop word?
awk '/start/, /stop/' file <- this prints the line, though I need to print the whole segment. Newline... (1 Reply)
Discussion started by: apalex
1 Replies
2. Programming
Hi
1) Please go through the following code :
char string2;
char string1;
main()
{
memcpy(string2,"SENDER ",12);
strcpy(string1,"******");
printf("%s\n%s\n",string1,string2);
}
2) and the output of... (7 Replies)
Discussion started by: karimulla_sha
7 Replies
3. Programming
When run it, segment fault.
What is wrong?
#include <stdio.h>
#include <stdlib.h>
const int max =20;
//****************************************************
// Input Matrix
//****************************************************
void inMatrixAA(int *AA, int row, int col)... (9 Replies)
Discussion started by: zhshqzyc
9 Replies
4. Shell Programming and Scripting
Hey all, could someone please direct me on how to extract a segment from a file between two tags? Thanks! (1 Reply)
Discussion started by: mpang_
1 Replies
5. UNIX for Advanced & Expert Users
Hi,
as per my Unix admin all parameters in Ulimit are set to Unlimited in Hard limits but some how few profiles setting data segment part to limited number value. So i wanted to over write in my profile to set unlimited as hard limits are set to unlimited. What is the command to set ulimit for... (1 Reply)
Discussion started by: terala_s
1 Replies
6. UNIX for Dummies Questions & Answers
how do i close a do code segment? od? (1 Reply)
Discussion started by: trob
1 Replies
7. Programming
I mean, I malloc a segment of memory, maybe 1k maybe 20bytes.. assume the pointer is pMem How can I know the content pMem refered is all Zero or \0 . I know memcmp but the second parameter should another memory address... thanx (4 Replies)
Discussion started by: macroideal
4 Replies
8. Programming
Hi to all.
I'm reciving a "Segment violation" error from this code and I don't know why.
void insertAtEnd(NodeType *pList) {
char element;
printf("Introduce a element: \n");
setbuf(stdin, NULL);
scanf("%c", &element);
//Find the end of the list;
while... (4 Replies)
Discussion started by: daniel.gbaena
4 Replies
9. Programming
Hi,
Whether the following piece of code is placed in the read-only memory of code (text) segment or data segment?
char *a = "Hello";
I am getting two different answers while searching in google :( that's why the confusion is (7 Replies)
Discussion started by: royalibrahim
7 Replies
10. Programming
I always get segment fault, why? can sb help me and modify it, I have spend on much time on
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <string.h>
#define MAX 10
pthread_t thread;
void *thread1()
{
int *a;
int i, n;
... (1 Reply)
Discussion started by: yanglei_fage
1 Replies
plimit(1) User Commands plimit(1)
NAME
plimit - get or set the resource limits of running processes
SYNOPSIS
plimit [-km] pid...
plimit {-cdfnstv} soft,hard... pid...
DESCRIPTION
If one or more of the cdfnstv options is specified, plimit sets the soft (current) limit and/or the hard (maximum) limit of the indicated
resource(s) in the processes identified by the process-ID list, pid. Otherwise plimit reports the resource limits of the processes identi-
fied by the process-ID list, pid.
Only the owner of a process or the super-user is permitted either to get or to set the resource limits of a process. Only the super-user
can increase the hard limit.
OPTIONS
The following options are supported:
-k On output, show file sizes in kilobytes (1024 bytes) rather than in 512-byte blocks.
-m On output, show file and memory sizes in megabytes (1024*1024 bytes).
The remainder of the options are used to change specified resource limits. They each accept an argument of the form:
soft,hard
where soft specifies the soft (current) limit and hard specifies the hard (maximum) limit. If the hard limit is not specified, the comma
may be omitted. If the soft limit is an empty string, only the hard limit is set. Each limit is either the literal string unlimited, or a
number, with an optional scaling factor, as follows:
nk n kilobytes
nm n megabytes (minutes for CPU time)
nh n hours (for CPU time only)
mm:ss minutes and seconds (for CPU time only)
The soft limit cannot exceed the hard limit.
-c soft,hard Set core file size limits (default unit is 512-byte blocks).
-d soft,hard Set data segment (heap) size limits (default unit is kilobytes).
-f soft,hard Set file size limits (default unit is 512-byte blocks).
-n soft,hard Set file descriptor limits (no default unit).
-s soft,hard Set stack segment size limits (default unit is kilobytes).
-t soft,hard Set CPU time limits (default unit is seconds).
-v soft,hard Set virtual memory size limits (default unit is kilobytes).
OPERANDS
The following operands are supported.
pid Process ID list.
EXIT STATUS
plimit returns the exit value zero on success, non-zero on failure (such as no such process, permission denied, or invalid option).
FILES
/proc/pid/* process information and control files
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
SEE ALSO
ulimit(1), proc(1), getrlimit(2), setrlimit(2), proc(4), attributes(5),
SunOS 5.10 8 Jun 1998 plimit(1)