1 /* vi: set sw=4 ts=4: */
3 * cat implementation for busybox
5 * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
7 * Licensed under GPLv2, see file LICENSE in this source tree.
13 //config: cat is used to concatenate files and print them to the standard
14 //config: output. Enable this option if you wish to enable the 'cat' utility.
16 //applet:IF_CAT(APPLET_NOFORK(cat, cat, BB_DIR_BIN, BB_SUID_DROP, cat))
18 //kbuild:lib-$(CONFIG_CAT) += cat.o
20 /* BB_AUDIT SUSv3 compliant */
21 /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
23 //usage:#define cat_trivial_usage
25 //usage:#define cat_full_usage "\n\n"
26 //usage: "Concatenate FILEs and print them to stdout"
28 //usage:#define cat_example_usage
29 //usage: "$ cat /proc/uptime\n"
30 //usage: "110716.72 17.67"
34 /* This is a NOFORK applet. Be very careful! */
37 int bb_cat(char **argv)
40 int retval = EXIT_SUCCESS;
43 argv = (char**) &bb_argv_dash;
46 fd = open_or_warn_stdin(*argv);
48 /* This is not a xfunc - never exits */
49 off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
50 if (fd != STDIN_FILENO)
55 retval = EXIT_FAILURE;
61 int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
62 int cat_main(int argc UNUSED_PARAM, char **argv)