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ACCT(2) 			    Linux Programmer's Manual				  ACCT(2)

       acct - switch process accounting on or off

       #include <unistd.h>

       int acct(const char *filename);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       acct(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)

       The acct() system call enables or disables process accounting.  If called with the name of
       an existing file as its argument, accounting is turned on, and records for each	terminat-
       ing  process  are  appended  to	filename  as  it  terminates.  An argument of NULL causes
       accounting to be turned off.

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

       EACCES Write permission is denied for the specified file, or search permission  is  denied
	      for  one	of  the directories in the path prefix of filename (see also path_resolu-
	      tion(7)), or filename is not a regular file.

       EFAULT filename points outside your accessible address space.

       EIO    Error writing to the file filename.

       EISDIR filename is a directory.

       ELOOP  Too many symbolic links were encountered in resolving filename.

	      filename was too long.

       ENFILE The system limit on the total number of open files has been reached.

       ENOENT The specified filename does not exist.

       ENOMEM Out of memory.

       ENOSYS BSD process accounting has not been enabled when the operating  system  kernel  was
	      compiled.   The  kernel  configuration  parameter  controlling this feature is CON-

	      A component used as a directory in filename is not in fact a directory.

       EPERM  The calling process has insufficient privilege to enable	process  accounting.   On
	      Linux the CAP_SYS_PACCT capability is required.

       EROFS  filename refers to a file on a read-only file system.

       EUSERS There are no more free file structures or we ran out of memory.

       SVr4, 4.3BSD (but not POSIX).

       No accounting is produced for programs running when a system crash occurs.  In particular,
       nonterminating processes are never accounted for.

       The structure of the records written to the accounting file is described in acct(5).


       This page is part of release 3.25 of the Linux man-pages project.  A  description  of  the
       project,   and	information  about  reporting  bugs,  can  be  found  at  http://www.ker-

Linux					    2008-06-16					  ACCT(2)
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