system(3) [minix man page]

SYSTEM(3)						     Library Functions Manual							 SYSTEM(3)

NAME

       system - issue a shell command

SYNOPSIS

       #include <stdlib.h>

       int system(const char *string)

DESCRIPTION

       System  causes  the  string  to be given to sh(1) as input as if the string had been typed as a command at a terminal.  The current process
       waits until the shell has completed, then returns the exit status of the shell.

SEE ALSO

       sh(1), popen(3), execve(2), wait(2).

DIAGNOSTICS

       Exit status 127 indicates the shell couldn't be executed.

7th Edition							   May 15, 1985 							 SYSTEM(3)

SYSTEM(3)						   BSD Library Functions Manual 						 SYSTEM(3)

NAME

     system -- pass a command to the shell

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     int
     system(const char *command);

DESCRIPTION

     The system() function hands the argument command to the command interpreter sh(1).  The calling process waits for the shell to finish execut-
     ing the command, ignoring SIGINT and SIGQUIT, and blocking SIGCHLD.

     If command is a NULL pointer, system() will return non-zero if the command interpreter sh(1) is available, and zero if it is not.

RETURN VALUES

     The system() function returns the exit status of the shell as returned by waitpid(2), or -1 if an error occurred when invoking fork(2) or
     waitpid(2).  A return value of 127 means the execution of the shell failed.

SEE ALSO

     sh(1), execve(2), fork(2), waitpid(2), popen(3)

STANDARDS

     The system() function conforms to ISO/IEC 9899:1990 (``ISO C90'') and is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

BSD
								   June 4, 1993 							       BSD