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author | Rob Landley <rob@landley.net> | 2012-08-25 14:25:22 -0500 |
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committer | Rob Landley <rob@landley.net> | 2012-08-25 14:25:22 -0500 |
commit | 3a9241add947cb6d24b5de7a8927517426a78795 (patch) | |
tree | d122ab6570439cd6b17c7d73ed8d4e085e0b8a95 /toys/posix/cat.c | |
parent | 689f095bc976417bf50810fe59a3b3ac32b21105 (diff) | |
download | toybox-3a9241add947cb6d24b5de7a8927517426a78795.tar.gz |
Move commands into "posix", "lsb", and "other" menus/directories.
Diffstat (limited to 'toys/posix/cat.c')
-rw-r--r-- | toys/posix/cat.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/toys/posix/cat.c b/toys/posix/cat.c new file mode 100644 index 00000000..81bfcafd --- /dev/null +++ b/toys/posix/cat.c @@ -0,0 +1,42 @@ +/* vi: set sw=4 ts=4: + * + * cat.c - copy inputs to stdout. + * + * Copyright 2006 Rob Landley <rob@landley.net> + * + * See http://www.opengroup.org/onlinepubs/009695399/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); + toys.exitval = EXIT_FAILURE; + } + if (len<1) break; + xwrite(1, toybuf, len); + } +} + +void cat_main(void) +{ + loopfiles(toys.optargs, do_cat); +} |