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Top Forums Programming Urgent help required with uname() Post 63249 by rm1 on Wednesday 23rd of February 2005 04:14:11 PM
Old 02-23-2005
Urgent help required with uname()

Hello,

I am doing a program in C on UNIX Platform. I am required to make it display the Machine Name, OS name and OS Release version using uname.

Now I went through the man pages and found out that uname can be implemented using -

#include <sys/utsname.h>

int uname (name)
struct utsname *name;

So after doing this step every time I do printf ("%s", name) ;

It displays the operating system name.

So I was trying to move forward and I tried printf ("%s", ++name) ;
And it gave me some long path name.

The third time I tried for release version - printf ("%s", ++name) ;

I got this segmentation error.

No matter how I try the printf I do not get release version and end up stalling on segmentation error.

Can someone help me out on this matter? I just need the correct format for running the various options of uname from the structure utsname.

Thanking You in Advance,

RM1
 

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uname(2)							System Calls Manual							  uname(2)

NAME
uname - Gets the name of the current system SYNOPSIS
#include <sys/utsname.h> int uname( struct utsname *name); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: uname(): XSH5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Points to a utsname structure. DESCRIPTION
The uname() function stores information identifying the current system in the structure pointed to by the name parameter. The uname() function uses the utsname structure, which is defined in the sys/utsname.h file and contains the following members: char sys- name[_SYS_NMLN]; char nodename[_SYS_NMLN]; char release[_SYS_NMLN]; char version[_SYS_NMLN]; char machine[_SYS_NMLN]; The uname() function returns a null-terminated character string naming the current system in the sysname character array. The nodename array contains the name that the system is known by on a communications network. The release and version arrays further identify the sys- tem. The machine array identifies the CPU hardware being used. RETURN VALUES
Upon successful completion, a nonnegative value is returned. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
If the uname() function fails, errno may be set to the following value: [Tru64 UNIX] The name parameter points outside of the process address space. RELATED INFORMATION
Commands: uname(1) Standards: standards(5) delim off uname(2)
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