wc man page on 4.4BSD

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WC(1)			  BSD General Commands Manual			 WC(1)

     wc — word, line, and byte count

     wc [-clw] [file ...]

     The wc utility displays the number of lines, words, and bytes contained
     in each input file (or standard input, by default) to the standard out‐
     put.  A line is defined as a string of characters delimited by a <new‐
     line> character, and a word is defined as a string of characters delim‐
     ited by white space characters.  White space characters are the set of
     characters for which the isspace(3) function returns true.	 If more than
     one input file is specified, a line of cumulative counts for all the
     files is displayed on a separate line after the output for the last file.

     The following options are available:

     -c	     The number of bytes in each input file is written to the standard

     -l	     The number of lines in each input file is written to the standard

     -w	     The number of words in each input file is written to the standard

     When an option is specified, wc only reports the information requested by
     that option.  The default action is equivalent to specifying all of the

     If no files are specified, the standard input is used and no file name is

     The wc utility exits 0 on success, and >0 if an error occurs.


     Historically, the wc utility was documented to define a word as a ``maxi‐
     mal string of characters delimited by <space>, <tab> or <newline> charac‐
     ters''.  The implementation, however, didn't handle non-printing charac‐
     ters correctly so that ``	^D^E  '' counted as 6 spaces, while
     ``foo^D^Ebar'' counted as 8 characters.  4BSD systems after 4.3BSD modi‐
     fied the implementation to be consistent with the documentation.  This
     implementation defines a ``word'' in terms of the isspace(3) function, as
     required by IEEE Std 1003.2 (“POSIX.2”).

     The wc function conforms to IEEE Std 1003.2 (“POSIX.2”).

BSD				April 19, 1994				   BSD

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