libtmpfile man page on YellowDog

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Netpbm subroutine library: Netpbmfsubroutinetlibrary: pm_tmpfile() function(3)

NAME
       pm_tmpfile() - tempfile creation routine using TMPFILE

SYNOPSIS
       #include <netpbm/pm.h>

       FILE *
       pm_tmpfile(void);

EXAMPLE
       This  simple  example creates a temporary file, writes "hello world" to
       it, then reads back and prints those contents.

       #include <netpbm/pm.h>

       FILE * myfile;

       myfile = pm_tmpfile();

       fprintf(myfile, "hello world0);

       fseek(myfile, 0, SEEK_SET);

       fread(buffer, sizeof(buffer), 1, myfile);

       fprintf(STDOUT, "temp file contains '%s'0, buffer);

       fclose(myfile);

DESCRIPTION
       This library function is part of Netpbm(1).

       pm_tmpfile() creates and opens an unnamed temporary file.  It is	 basi‐
       cally  the  same	 thing	as  the standard C library tmpfile() function,
       except that it uses the TMPFILE environment variable to decide where to
       create  the  temporary  file.  If TMPFILE is not set or is set to some‐
       thing unusable (e.g.  too long), pm_tmpfile() falls back to  the	 value
       of the standard C library symbol P_tmpdir, just like tmpfile().

       Unlike  tmpfile(),  pm_tmpfile()	 never	returns NULL.  If it fails, it
       issues a message to Standard Error and aborts the  program,  like  most
       libnetpbm routines do.

HISTORY
       pm_tmpfile() was introduced in Netpbm 10.20 (January 2004).

netpbm documentation	   Netpbm2subroutine4library: pm_tmpfile() function(3)
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