bsd man page for system

SYSTEM(3F)																SYSTEM(3F)

NAME
       system - execute a UNIX command

SYNOPSIS
       integer function system (string)
       character*(*) string

DESCRIPTION
       System  causes  string  to  be given to your shell as input as if the string had been typed as a command.  If environment variable SHELL is
       found, its value will be used as the command interpreter (shell); otherwise sh(1) is used.

       The current process waits until the command terminates.	The returned value will be the exit status of  the  shell.   See  wait(2)  for	an
       explanation of this value.

FILES
       /usr/lib/libU77.a

SEE ALSO
       exec(2), wait(2), system(3)

BUGS
       String can not be longer than NCARGS-50 characters, as defined in <sys/param.h>.

4.2 Berkeley Distribution					   May 15, 1985 							SYSTEM(3F)