wc [-lmcw] [file ...]
Outputs the number of lines, words, and characters in each input file, or standard input (if no file is specified)
to the standard output.
A line is defined as a string of characters delimited by a
Characters beyond the final
NL will not be included in the line count.
A word is defined as a string of characters delimited by white space characters, the set of characters for
which the iswspace(3) function returns true.
If more than one input file is specified, a line of
TOTAL counts for all the files is
>hexdump -C dafileIf no files are specified, the standard input is used and no file name is displayed.
00000000 31 2c 32 20 33 09 34 0a 0a 0a |1,2 3.4...|
> wc dafile
3 3 10 dafile
> wc -L dafile
LC_CTYPEenvironment variables affect the execution of wc as described in environ(environ
Exits 0 on success, and >0 if an error occurs.
wc: inputFilename:489: Invalid or incomplete multibyte or wide character
wc -mlw report1 report2
Historically, a word was a "maximal string of characters delimited by ␠ ␉ or ␤ characters''.
The implementation, however, did not handle non-printing characters correctly so that " ^D^E " counted as 6 spaces, while "foo^D^Ebar" counted as 8 characters.
4BSD systems after 4.3BSD modified the implementation to be consistent with the documentation.
This implementation defines a "word in terms of the iswspace(3) function, as required by IEEE Std 1003.2 (POSIX.2).
widecis a wide character belonging to the wide character class "space". class "space" is disjoint from the wide character class "graph" and therefore also disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit", "xdigit", "punct". contains the wide character class "blank". always contains at least the space character and the control characters ’\f’, ’\n’, ’\r’, ’\t’, ’\v’. SEE ALSO isspace(3), iswctype(3) depends on the