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SYSTEM(3) UNIX Programmer's Manual SYSTEM(3)
NNAAMMEE
ssyysstteemm - pass a command to the shell
SSYYNNOOPPSSIISS
##iinncclluuddee <<ssttddlliibb..hh>>
_i_n_t
ssyysstteemm(_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g)
DDEESSCCRRIIPPTTIIOONN
The ssyysstteemm() function hands the argument _s_t_r_i_n_g to the command inter-
preter sh(1). The calling process waits for the shell to finish execut-
ing the command, ignoring SIGINT and SIGQUIT, and blocking SIGCHLD.
If _s_t_r_i_n_g is a NULL pointer, ssyysstteemm() will return non-zero. Otherwise,
ssyysstteemm() returns the termination status of the shell in the format speci-
fied by waitpid(3).
RREETTUURRNN VVAALLUUEESS
If a child process cannot be created, or the termination status of the
shell cannot be obtained, ssyysstteemm() returns -1 and sets _e_r_r_n_o to indicate
the error. If execution of the shell fails, ssyysstteemm() returns the termi-
nation status for a program that terminates with a call of eexxiitt(_1_2_7).
SSEEEE AALLSSOO
sh(1), execve(2), popen(3), waitpid(3),
SSTTAANNDDAARRDDSS
The ssyysstteemm() function conforms to ANSI C3.159-1989 (``ANSI C'') and .
BSD Experimental June 29, 1991 1