$ wc note.txt
> 5 31 146 note.txt
# lines words bytes
$ wc -lw note1.txt note2.txt note3.txt
> 10 62 note1.txt
> 12 74 note2.txt
> 12 68 note3.txt
> 43 204 total
$ ls | wc
> 4 4 20
$ ls | wc -w
> 4
-c
- bytes-l
- lines-m
- characters-w
- words-L
- length of longest line
$ cat file.txt
> abc
> abcdef
$ cat file.txt | wc -L
> 6