How do I count words using grep command under Linux / Unix like operating systems? You can pass the -c option to grep command to suppress normal output and display a count of matching lines for each input file. The syntax is follows: grep -c "string" file In this example, search for a word called ‘var’ and display a count of matching lines: grep -c 'var' /etc/passwd You can pass the -v option to count non-matching lines: grep -v 'var' /etc/passwd However, this will not count words. To count exact matched words, enter: grep -o -w 'word' /path/to/file/ | wc -w The grep -o command will only display matched words and the wc -c command will display the word counts.
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