/* 8c fdecho.c && 8l -o fdecho fdecho.8 && cp fdecho $home/bin/386 && 8.out */ #include #include int logfd; void main(int argc, char *argv[]) { int nflag; int i, len; char *buf, *p; logfd = open("/tmp/xcpu.log", OWRITE); nflag = 0; if(argc > 1 && strcmp(argv[1], "-n") == 0) nflag = 1; len = 1; for(i = 1+nflag; i < argc; i++) len += strlen(argv[i])+1; buf = malloc(len); if(buf == 0) exits("no memory"); p = buf; for(i = 1+nflag; i < argc; i++){ strcpy(p, argv[i]); p += strlen(p); if(i < argc-1) *p++ = ' '; } if(!nflag) *p++ = '\n'; fprint(logfd, "%ld %d %s %*s\n", time(0), getpid(), argv[0], p-buf, buf); if(write(1, buf, p-buf) < 0){ fprint(2, "echo: write error: %r\n"); exits("write error"); } exits((char *)0); }