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