Linux Command - wc
The Linux command wc is used to find the word count or line count of a file. It also does byte and character counts.
Check the number of lines in a file:
wc -l test.txt
Check the number of words in a file:
wc -w test.txt
Check the number of bytes in a file:
wc -c test.txt
Check the number of chars in a file:
wc -m test.txt