rubyのsystemとコマンド出力`str`の違い
#include <stdio.h> int main(){ fprintf(stderr,"stderr\n"); fprintf(stdout,"stdout\n"); }
#!/usr/bin/ruby def number n; puts "(#{n})"; end number 1 puts `./a.out` number 2 `./a.out` number 3 system "./a.out"
(1) stderr stdout (2) stderr (3) stderr stdout