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     ACCT(2)                                                   ACCT(2)

     NAME
          acct - turn accounting on or off

     SYNOPSIS
          acct(file)
          char *file;

     DESCRIPTION
          The system is prepared to write a record in an accounting
          file for each process as it terminates.  This call, with a
          null-terminated string naming an existing file as argument,
          turns on accounting; records for each terminating process
          are appended to file. An argument of 0 causes accounting to
          be turned off.

          The accounting file format is given in acct(5).

     SEE ALSO
          acct(5), sa(1)

     DIAGNOSTICS
          On error -1 is returned.  The file must exist and the call
          may be exercised only by the super-user.  It is erroneous to
          try to turn on accounting when it is already on.

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

     ASSEMBLER
          (acct = 51.)
          sys acct; file