Bash to find count of multiple strings in a large file
grep -Eo 'pig|horse|cat' txt.file | sort | uniq -c | awk '{print $2": "$1}'Breaking that into pieces:
grep -Eo 'pig|horse|cat' Print all the occurrences (-o) of the extended (-e) regex sort Sort the resulting wordsuniq -c Output unique values (of sorted input) with the count (-c) of each valueawk '{print $2": "$1}' For each line, print the second field (the word) then a colon and a space, and then the first field (the count).