ref: a351bcdccdf5a4273bc8dc3360a48fbb8b8aa9ea
dir: /progs/aecho.c.ms/
.P1 .ps -1 .ti -1i .B .BX aecho.c .ps +1 .CW .ps -2 .vs .15i #include <u.h> #include <libc.h> void main(int argc, char* argv[]) { int nflag = 0; int vflag = 0; int i; ARGBEGIN{ case 'v': vflag = 1; break; case 'n': nflag = 1; break; default: fprint(2, "usage: %s [-nv] args\en", argv0); exits("usage"); }ARGEND; for (i = 0; i < argc; i++) if (vflag) print("[%s] ", argv[i]); else print("%s ", argv[i]); if (!nflag) print("\en"); exits(nil); } .ps +2 .P2