07-19-2007
Check the man page. For chmod it will be something like chmod(2). Your OS will have specific sections of the man pages dedicated to things like system calls, user commands, admin commands, files and so on. The (2) usually means system call on most systems. Now check the man page for something else like fprintf. You will see either fprintf(3C) or fprintf(3). On most systems, section 3/3C is for library functions.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi folks,
I'm trying to organize functions in my ksh program into libraries.
If I run my program as any ksh user it will succeed.
Only when I run my program as tcsh user (i.e oracle) I failed.
Example
=======
The ksh code:
tornado:/tmp # cat nir.ksh
#! /bin/ksh
cdromPath=`pwd`... (1 Reply)
Discussion started by: nir_s
1 Replies
2. Programming
How the c compiler differentiates the system calls and function calls? (1 Reply)
Discussion started by: rangaswamy
1 Replies
3. Shell Programming and Scripting
I have written a shell script called square, which prints the square of the input number, eg.
> square 4
16
There is a program called shc which compiles the shell scirpt and create a executable file and a c library file, namely square.x and square.x.c repectively.
If I would like to... (0 Replies)
Discussion started by: alfredo
0 Replies
4. Programming
I have written a shell script called square, which prints the square of the input number, eg.
> square 4
16
There is a program called shc which compiles the shell scirpt and create a executable file and a c library file, namely square.x and square.x.c repectively.
If I would like to... (1 Reply)
Discussion started by: alfredo
1 Replies
5. Infrastructure Monitoring
Hello,
I have a problem with package and name space.
require "/Mehran/DSGateEngineLib/general.pl";
use strict;
sub System_Status_Main_Service_Status_Intrusion_Prevention
{
my %idpstatus;
my @result;
&General_ReadHash("/var/dsg/idp/settings",\%idpstatus);
#print... (4 Replies)
Discussion started by: Zaxon
4 Replies
6. Shell Programming and Scripting
Hi,
How to write a system calls in a script ?
> cd $HOME
> ls -ltr
thanks in advance.. (10 Replies)
Discussion started by: hegdeshashi
10 Replies
7. Programming
Hi
I'm studing the system call. I've written a small program that return the time spent in doing some operations. Now I'd like to write one that return the time spent in user mode of a process.
I'm reading that i should use the tms struct:
clock_t times(struct tms *buf);
struct tms {... (2 Replies)
Discussion started by: Dedalus
2 Replies
8. Programming
I have a cgi script which is called after certain time interval, which has this:
system ("ls -l /tmp/cgic* | grep -v \"cgicsave.env\" | awk '{print $5}'");
During the execution of this script,the output is 0 sometimes. But due to this the system call is not working at all and doesnt o/p... (2 Replies)
Discussion started by: xs2punit
2 Replies
9. Programming
hi everyone
i wrote a system call and compiled the kernel succesfully...
my system call is in a file in the kernel folder named my_syscall1.c (kernel/my_syscall1.c)
the header file for this system call i added it in the folder include like this include/my_syscall1/my_syscall1.h
my problem is... (2 Replies)
Discussion started by: demis87
2 Replies
10. Shell Programming and Scripting
Trying to figure out a load issue with a webserver. I have traced a php script and noticed the following
connect(4, {sa_family=AF_INET, sin_port=htons(3306), sin_addr=inet_addr("XX.XX.XX.XX")}, 16) = -1 EINPROGRESS (Operation now in progress) <0.000035>
poll(, 1, 2000) = 1 () <0.000120>... (5 Replies)
Discussion started by: rajan007
5 Replies
INTRO(3) Linux Programmer's Manual INTRO(3)
NAME
intro - Introduction to library functions
DESCRIPTION
Section 3 of the manual describes all library functions excluding the library functions (system call wrappers) described in section 2,
which implement system calls.
Many of the functions described in the section are part of the Standard C Library (libc). Some functions are part of other libraries
(e.g., the math library, libm, or the real-time library, librt) in which case the manual page will indicate the linker option needed to
link against the required library (e.g., -lm and -lrt, respectively, for the aforementioned libraries).
In some cases, the programmer must define a feature test macro in order to obtain the declaration of a function from the header file speci-
fied in the man page SYNOPSIS section. In such cases, the required macro is described in the man page. For further information on feature
test macros, see feature_test_macros(7).
CONFORMING TO
Certain terms and abbreviations are used to indicate Unix variants and standards to which calls in this section conform. See standards(7).
NOTES
Authors and Copyright Conditions
Look at the header of the manual page source for the author(s) and copyright conditions. Note that these can be different from page to
page!
SEE ALSO
intro(2), errno(3), feature_test_macros(7), libc(7), standards(7)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2010-02-03 INTRO(3)