acct - switch process accounting on or off
int acct(const char *filename);
Feature Test Macro Requirements for glibc (see feature_test_macros
Since glibc 2.21:
In glibc 2.19 and 2.20:
_DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
Up to and including glibc 2.19:
_BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
() 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 terminating process are appended to filename
terminates. An argument of NULL causes accounting to be turned off.
On success, zero is returned. On error, -1 is returned, and errno
- 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_resolution(7)), or
filename is not a regular file.
- filename points outside your accessible address
- Error writing to the file filename.
- filename is a directory.
- Too many symbolic links were encountered in resolving
- filename was too long.
- The system-wide limit on the total number of open files has
- The specified filename does not exist.
- Out of memory.
- BSD process accounting has not been enabled when the
operating system kernel was compiled. The kernel configuration parameter
controlling this feature is CONFIG_BSD_PROCESS_ACCT.
- A component used as a directory in filename is not
in fact a directory.
- The calling process has insufficient privilege to enable
process accounting. On Linux, the CAP_SYS_PACCT capability is
- filename refers to a file on a read-only
- There are no more free file structures or we ran out of
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
This page is part of release 4.13 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at