1Netpbm subroutine libraNreyt:pbpLmmi_bsmruaabkrreyo_utFtmuipnnfceitlileoi(nb)srafMruaynn:cutapilmo_nm(a3k)e_tmpfile() function(3)
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NAME

6       pm_make_tmpfile() - create a temporary named file
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SYNOPSIS

10       #include <netpbm/pm.h>
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12       pm_make_tmpfile(FILE **       fileP,
13                       const char ** filenameP);
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EXAMPLE

17       This  simple  example creates a temporary file, writes 'hello world' to
18       it, then writes some search patterns to it, then uses it  as  input  to
19       grep:
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21       #include <netpbm/pm.h>
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23       FILE * myfileP;
24       const char * myfilename;
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26       pm_make_tmpfile(&myfileP, &myfilename);
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28       fprintf(myfile, '^account:\s.*0);
29       fprintf(myfile, '^name:\s.*0);
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31       fclose(myFileP);
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33       asprintfN(&grepCommand, 'grep --file='%s' /tmp/infile >/tmp/outfile');
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35       system(grepCommand);
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37       strfree(grepCommand);
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39       unlink(myfilename);
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41       strfree(myfilename);
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DESCRIPTION

46       This library function is part of Netpbm(1).
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48       pm_make_tmpfile()  creates and opens a temporary file, returning to you
49       a stream file handle for it and its name.
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51       pm_make_tmpfile() chooses a file name that is not already in use,  with
52       proper  interlocking  to  make sure that it actually creates a file and
53       opens the new file, as opposed to merely opening an existing file.
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55       If you don't need to access the file by name, use pm_tmpfile() instead,
56       because  it's  cleaner.  With pm_tmpfile(), the operating system always
57       deletes the temporary file when your  program  exits,  if  the  program
58       failed to clean up after itself.
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60       The  temporary file goes in the directory named by the TMPFILE environā€
61       ment variable.  If TMPFILE is not set or is set to  something  unusable
62       (e.g.   too long), pm_tmpfile() falls back to the value of the standard
63       C library symbol P_tmpdir (like the standard C library's tmpfile()).
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65       The name of the file within that directory is like myprog_blrfx,  where
66       myprog is the name of your program (arg 0) and the rest is an arbitrary
67       discriminator.
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69       If pm_make_tmpfile() is unable to create a temporary file, it issues  a
70       message to Standard Error and aborts the program.
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HISTORY

75       pm_tmpfile() was introduced in Netpbm 10.27 (March 2005).
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79netpbm documentation  Netpbm su1b0roNuotvienmebelrib2r0a0r7y: pm_make_tmpfile() function(3)
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