̾??

system — ???ޥ??ɤ򥷥??????Ϥ?

?饤?֥???

Standard C Library (libc, -lc)

????

<stdlib.h> int system(const char *string)

????

system() ?ؿ??ϡ????? string ?򥳥ޥ??ɥ??󥿥ץ꥿ sh(1) ???Ϥ??ޤ??? ?ƤӽФ????ץ??????ϡ??????뤬???Υ??ޥ??ɤμ¹Ԥ? ??λ?????ޤ??Ԥ??? SIGINT ?????? SIGQUIT ??̵?뤷?? SIGCHLD ???֥??å????ޤ???

string ?? NULL ?ݥ??󥿤ξ??硢 system() ?ϥ??ޥ??ɥ??󥿥ץ꥿ sh(1) ?????ѤǤ????????? 0 ?ʳ????ͤ??֤??? ???ѤǤ??ʤ??????? 0 ???֤??ޤ???

fork(2) ?⤷???? waitpid(2) ???ƤӽФ????Ȥ??˥??顼??ȯ?????????硢 system() ?ؿ??ϡ? waitpid(2) ???֤????륷?????ν?λ???֡? ???뤤?? -1 ???֤??ޤ??? ?????? 127 ?ϡ????????μ¹Ԥ? ???Ԥ??????Ȥ???̣???ޤ???

??Ϣ????

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

????

system() ?ؿ??ϡ? ISO/IEC 9899:1990 (“ISO C90”) ??Ŭ?礷?Ƥ??ꡢ IEEE Std 1003.2 (“POSIX.2”) ?ȸߴ??????????Ȼפ????ޤ???