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.
10 /* BB_AUDIT SUSv3 compliant */
11 /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
13 //kbuild:lib-$(CONFIG_CAT) += cat.o
14 //kbuild:lib-$(CONFIG_MORE) += cat.o # more uses it if stdout isn't a tty
15 //kbuild:lib-$(CONFIG_LESS) += cat.o # less too
16 //kbuild:lib-$(CONFIG_CRONTAB) += cat.o # crontab -l
22 //config: cat is used to concatenate files and print them to the standard
23 //config: output. Enable this option if you wish to enable the 'cat' utility.
25 //usage:#define cat_trivial_usage
27 //usage:#define cat_full_usage "\n\n"
28 //usage: "Concatenate FILEs and print them to stdout"
30 //usage:#define cat_example_usage
31 //usage: "$ cat /proc/uptime\n"
32 //usage: "110716.72 17.67"
36 /* This is a NOFORK applet. Be very careful! */
39 int bb_cat(char **argv
)
42 int retval
= EXIT_SUCCESS
;
45 argv
= (char**) &bb_argv_dash
;
48 fd
= open_or_warn_stdin(*argv
);
50 /* This is not a xfunc - never exits */
51 off_t r
= bb_copyfd_eof(fd
, STDOUT_FILENO
);
52 if (fd
!= STDIN_FILENO
)
57 retval
= EXIT_FAILURE
;
63 int cat_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
64 int cat_main(int argc UNUSED_PARAM
, char **argv
)