limits(4) Kernel Interfaces Manual limits(4)NAME
limits - Header files for implementation-specific constants
SYNOPSIS
#include <limits.h> #include <float.h> #include <sys/limits.h>
DESCRIPTION
The header file limits.h specifies the sizes of integral types as required by the proposed ANSI C standard. The header file float.h speci-
fies the characteristics of floating types as required by the proposed ANSI C standard. The constants that refer to long doubles that
should appear in float.h are not specified because long doubles are not implemented. The header file sys/limits.h is a list of magnitude
limitations imposed by a specific implementation of the operating system. All values in the files are specified in decimal.
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uio.h(3HEAD) Headers uio.h(3HEAD)NAME
uio.h, uio - definitions for vector I/O operations
SYNOPSIS
#include <sys/uio.h>
DESCRIPTION
The <sys/uio.h> header defines the iovec structure, which includes the following members:
void *iov_base /* base address of a memory region for input or output */
size_t iov_len /* size of the memory pointed to by iov_base */
The <sys/uio.h> header uses the iovec structure for scatter/gather I/O.
The ssize_t and size_t types are defined as described in <sys/types.h>.
USAGE
The symbol {IOV_MAX} defined in <limits.h> should always be used to learn about the limits on the number of scatter/gather elements that
can be processed in one call, instead of assuming a fixed value.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO read(2), write(2), limits.h(3HEAD), types.h(3HEAD), attributes(5), standards(5)SunOS 5.10 10 Sep 2004 uio.h(3HEAD)
Hi! All,
This is True64 Unix, 4.0.F patch kit 4
I have a 15GB Oracle dump file that I have to backup to tape. I am trying to use "tar" to dump it to tape, but
tar complained that the file was too big and that it was
truncating it!.
I am compressing the file using the "compress" utility.... (3 Replies)
%ulimit -a
nofiles(descriptors) 1024
This means that I can open up to 1024 file per process? But wonder if there is any hardlimit imposed by Solaris 2.6 (eg 255) ?
By the way, is there any tool that can trace which files (or sockets) are opened by a process?
Thanks
DY (5 Replies)
HP UNIX version 10.20
I have been using system variable names in some shell scripts in order to automate execution of some test software. I have recently found that there appears to be a restriction with the 'ls' command when listing specific files (e.g. ls *.c). If I pipe the output into wc, I... (5 Replies)
Hi there,
I am working on AIX and i dont have permission for /etc/security/limits file.
In the man page of ulimit it is mentioned that it will get the limitations for me from /etc/security/limits file.
the file permission for ulimit command is
-r-xr-xr-x 15 bin bin ... (6 Replies)
Hi,
Would any one be so kind to explain me :
are ulimits defined for each user seperately ? When ?
Specialy what is the impact of :
max locked memory
and
virtual memory
on performance of applications for a user.
Many thanks.
PS :
this is what I can see in MAN :
ulimit ]
... (5 Replies)
Hi,
we run an application called powerbroker that is providing a secured and logged access to functional IDs like root or oracle.
Generally the functionality should not differ from a normal su - but I am right now experiencing some behaviour I cannot explain: when 2 different users are... (4 Replies)
I'm somewhat new to BASH scripting but have managed to work my way through most of a problem. I'm trying to get a list of filenames where a column header occurs and any value in that column is within a range.
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I've been looking online trying to find the correct value nice and priority can take in the limits.conf file. ON the man page it says;
Does this mean priority can be any negative number and any positive?
Then
Does this mean any number between -20 and 19 also what does the definition of nice... (13 Replies)
Hi,
I have a huge file that has data something like shown below:
huge_file.txt
start regexp
Name=Name1
Title=Analyst
Address=Address1
Department=Finance
end regexp
some text
some text
start regexp
Name=Name2
Title=Controller
Address=Address2
Department=Finance
end regexp (7 Replies)
Hi,
I have as Solaris 10 (x86) system. I want to set the maximum memory for the user
But the following comaand is valid only till next reboot.Pls let me know how to make it permanenent.
prctl -n project.max-shm-memory -r -v 4G -i project 3 (6 Replies)