?? fig18.21
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#include "apue.h"static voidsig_catch(int signo){ printf("signal caught\n"); tty_reset(STDIN_FILENO); exit(0);}intmain(void){ int i; char c; if (signal(SIGINT, sig_catch) == SIG_ERR) /* catch signals */ err_sys("signal(SIGINT) error"); if (signal(SIGQUIT, sig_catch) == SIG_ERR) err_sys("signal(SIGQUIT) error"); if (signal(SIGTERM, sig_catch) == SIG_ERR) err_sys("signal(SIGTERM) error"); if (tty_raw(STDIN_FILENO) < 0) err_sys("tty_raw error"); printf("Enter raw mode characters, terminate with DELETE\n"); while ((i = read(STDIN_FILENO, &c, 1)) == 1) { if ((c &= 255) == 0177) /* 0177 = ASCII DELETE */ break; printf("%o\n", c); } if (tty_reset(STDIN_FILENO) < 0) err_sys("tty_reset error"); if (i <= 0) err_sys("read error"); if (tty_cbreak(STDIN_FILENO) < 0) err_sys("tty_cbreak error"); printf("\nEnter cbreak mode characters, terminate with SIGINT\n"); while ((i = read(STDIN_FILENO, &c, 1)) == 1) { c &= 255; printf("%o\n", c); } if (tty_reset(STDIN_FILENO) < 0) err_sys("tty_reset error"); if (i <= 0) err_sys("read error"); exit(0);}?? 快捷鍵說明
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