Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

vsprintf(9) [centos man page]

VSPRINTF(9)						     Basic C Library Functions						       VSPRINTF(9)

NAME
vsprintf - Format a string and place it in a buffer SYNOPSIS
int vsprintf(char * buf, const char * fmt, va_list args); ARGUMENTS
buf The buffer to place the result into fmt The format string to use args Arguments for the format string DESCRIPTION
The function returns the number of characters written into buf. Use vsnprintf or vscnprintf in order to avoid buffer overflows. If you're not already dealing with a va_list consider using sprintf. See the vsnprintf documentation for format string extensions over C99. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 VSPRINTF(9)

Check Out this Related Man Page

VSNPRINTF(9)						     Basic C Library Functions						      VSNPRINTF(9)

NAME
vsnprintf - Format a string and place it in a buffer SYNOPSIS
int vsnprintf(char * buf, size_t size, const char * fmt, va_list args); ARGUMENTS
buf The buffer to place the result into size The size of the buffer, including the trailing null space fmt The format string to use args Arguments for the format string DESCRIPTION
This function follows C99 vsnprintf, but has some extensions: pS output the name of a text symbol with offset ps output the name of a text symbol without offset pF output the name of a function pointer with its offset pf output the name of a function pointer without its offset pB output the name of a backtrace symbol with its offset pR output the address range in a struct resource with decoded flags pr output the address range in a struct resource with raw flags pM output a 6-byte MAC address with colons pMR output a 6-byte MAC address with colons in reversed order pMF output a 6-byte MAC address with dashes pm output a 6-byte MAC address without colons pmR output a 6-byte MAC address without colons in reversed order pI4 print an IPv4 address without leading zeros pi4 print an IPv4 address with leading zeros pI6 print an IPv6 address with colons pi6 print an IPv6 address without colons pI6c print an IPv6 address as specified by RFC 5952 pIS depending on sa_family of 'struct sockaddr *' print IPv4/IPv6 address piS depending on sa_family of 'struct sockaddr *' print IPv4/IPv6 address pU[bBlL] print a UUID/GUID in big or little endian using lower or upper case. %*ph[CDN] a variable-length hex string with a separator (supports up to 64 bytes of the input) pc print a cpumask as comma-separated list n is ignored ** Please update Documentation/printk-formats.txt when making changes ** The return value is the number of characters which would be generated for the given input, excluding the trailing '', as per ISO C99. If you want to have the exact number of characters written into buf as return value (not including the trailing ''), use vscnprintf. If the return is greater than or equal to size, the resulting string is truncated. If you're not already dealing with a va_list consider using snprintf. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 VSNPRINTF(9)
Man Page

7 More Discussions You Might Find Interesting

1. Programming

to convert int to hex

Hi, Can you help me in converting int value to hex in a single command. Thanks (8 Replies)
Discussion started by: naan
8 Replies

2. Solaris

Need help in building gcc on solaris.

We are moving from old solaris to new version of solaris. I have copied the gcc compiler installed on old server to new solaris server. But just copying didn't work. So I am trying to build it on the new server. The server version is sailfish@st-kvar02 -> uname -a SunOS st-kvar02 5.10... (7 Replies)
Discussion started by: nalina.hv
7 Replies

3. Programming

"No child processes" and waitpif

Hi everybody, i'm using a signal handler for the SIGCHLD signal. void InstallNewSigChldHandler() { struct sigaction act; struct sigaction oldAct; act.sa_handler = CallWaitChildProcess; sigemptyset(&act.sa_mask); act.sa_flags = SA_NOCLDSTOP; if... (5 Replies)
Discussion started by: Zipi
5 Replies

4. Programming

Problem with Sprintf

Hi, I have the below sample code to hash the input number read from file. File will have 16 to 19 digit number and executable hash the number using some logic and returns the hashed value. Each digit in the 16 digit number is converted to a 4 byte value. That if the input is 16digit integer, the... (6 Replies)
Discussion started by: ramkrix
6 Replies

5. Programming

Using ANSI color codes in gcc compiled program

I have put some yellow color codes and works well. I call the funstion using print_usage(stderr, 0); I would like to know if there is any way, to store the ansi color codes in variables and then call them inside fprintf. Or have a format followed by the strings I want to output. ... (5 Replies)
Discussion started by: kristinu
5 Replies

6. Programming

Unclear pointer and array

Hello, The purpose of the program is to print a sub string from the prompt inputs. I do not understand why char pointer does not work but char array will for line 40 and Line 41. ./a.out thisisatest 0 8 substring = "thisisat"And my code is: #include <stdio.h> #include <stdlib.h> #include... (29 Replies)
Discussion started by: yifangt
29 Replies

7. Shell Programming and Scripting

Smarter way to read $1 $2 in php

Hello, I am running under ubuntu14.04 with php5. When I run below php, it creates a token, then adds axaxax and bxbxbx into pc database, and at last, kills created token. What I am trying to do is to add userid and password read from a file. I do not wish to enter username and password manually.... (3 Replies)
Discussion started by: baris35
3 Replies