Symbol: ack
libexec/ftpd/cmds.c
544
ack(const char *s)
usr.bin/rdist/server.c
52
#define ack() do { if (write(rem, "\0\n", 2) < 0) error("ack failed: %s\n", strerror(errno)); } while (0)
usr.sbin/lpr/lpd/recvjob.c
69
#define ack() (void)write(STDOUT_FILENO, sp, 1);