wc [OPTION]... [FILE]...

• Count files and folders:
  

  $ ls | wc -w
  14

  
  
• Count lines in a file:
  

  $ wc -l test.txt
  26 test.txt

The following options can be used:

-w, --words
|print the word counts

-m, --chars
|print the character counts

-l, --lines
|print the newline counts

-c, --bytes
|print the byte counts