linux的wc命令源代码,linux下的wc命令的源代码

自己写得简易WC.c可以帮助理解

initialize_main (&argc, &argv); set_program_name (argv[0]); setlocale (LC_ALL, "");

bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE);

atexit (close_stdout);

/* Line buffer stdout to ensure lines are written atomically and immediately so that processes running in parallel do not intersperse their output. */ setvbuf (stdout, NULL, _IOLBF, 0);

linux中wc命令，print_lines = print_words = print_chars = print_bytes = false; print_linelength = false;

total_lines = total_words = total_chars = total_bytes = max_line_length = 0;

while ((optc = getopt_long (argc, argv, "clLmw", longopts, NULL)) != -1) switch (optc) {

case 'c':

print_bytes = true; break;

case 'm':

linux man命令的使用。print_chars = true; break;

case 'l':

print_lines = true; break;

case 'w':

print_words = true; break;

case 'L':

linux chmod命令，print_linelength = true; break;

case FILES0_FROM_OPTION: files_from = optarg; break;