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mktemp(3c) [opensolaris man page]

mktemp(3C)						   Standard C Library Functions 						mktemp(3C)

NAME
mktemp - make a unique file name from a template SYNOPSIS
#include <stdlib.h> char *mktemp(char *template); DESCRIPTION
The mktemp() function replaces the contents of the string pointed to by template with a unique file name, and returns template. The string in template should look like a file name with six trailing 'X's; mktemp() will replace the 'X's with a character string that can be used to create a unique file name. Only 26 unique file names per thread can be created for each unique template. RETURN VALUES
The mktemp() function returns the pointer template. If a unique name cannot be created, template points to a null string. ERRORS
No errors are defined. EXAMPLES
Example 1 Generate a filename. The following example replaces the contents of the "template" string with a 10-character filename beginning with the characters "file" and returns a pointer to the "template" string that contains the new filename. #include <stdlib.h> ... char *template = "/tmp/fileXXXXXX"; char *ptr; ptr = mktemp(template); USAGE
Between the time a pathname is created and the file opened, it is possible for some other process to create a file with the same name. The mkstemp(3C) function avoids this problem and is preferred over this function. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
mkstemp(3C), tmpfile(3C), tmpnam(3C), attributes(5), standards(5) SunOS 5.11 15 Sep 2004 mktemp(3C)

Check Out this Related Man Page

MKTEMP(P)						     POSIX Programmer's Manual							 MKTEMP(P)

NAME
mktemp - make a unique filename (LEGACY) SYNOPSIS
#include <stdlib.h> char *mktemp(char *template); DESCRIPTION
The mktemp() function shall replace the contents of the string pointed to by template by a unique filename and return template. The appli- cation shall initialize template to be a filename with six trailing 'X' s; mktemp() shall replace each 'X' with a single byte character from the portable filename character set. RETURN VALUE
The mktemp() function shall return the pointer template. If a unique name cannot be created, template shall point to a null string. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
Generating a Filename The following example replaces the contents of the "template" string with a 10-character filename beginning with the characters "file" and returns a pointer to the "template" string that contains the new filename. #include <stdlib.h> ... char *template = "/tmp/fileXXXXXX"; char *ptr; ptr = mktemp(template); APPLICATION USAGE
Between the time a pathname is created and the file opened, it is possible for some other process to create a file with the same name. The mkstemp() function avoids this problem and is preferred over this function. RATIONALE
None. FUTURE DIRECTIONS
This function may be withdrawn in a future version. SEE ALSO
mkstemp() , tmpfile() , tmpnam() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdlib.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE
/The Open Group 2003 MKTEMP(P)
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