/* cat.c - copy inputs to stdout. * * Copyright 2006 Rob Landley <rob@landley.net> * * See http://opengroup.org/onlinepubs/9699919799/utilities/cat.html USE_CAT(NEWTOY(cat, "u", TOYFLAG_BIN)) config CAT bool "cat" default y help usage: cat [-u] [file...] Copy (concatenate) files to stdout. If no files listed, copy from stdin. Filename "-" is a synonym for stdin. -u Copy one byte at a time (slow). */ #include "toys.h" static void do_cat(int fd, char *name) { int len, size=toys.optflags ? 1 : sizeof(toybuf); for (;;) { len = read(fd, toybuf, size); if (len<0) perror_msg("%s",name); if (len<1) break; xwrite(1, toybuf, len); } } void cat_main(void) { loopfiles(toys.optargs, do_cat); }