Linux Grep Command
grep "literal_string" filename
grep "string" FILE_PATTERN
grep -i "string" FILE
grep "REGEX" filename
grep -iw "is" demo_file
grep -A <N> "string" FILENAME
grep -B <N> "string" FILENAME
grep -C 2 "Example" demo_text
export GREP_OPTIONS='--color=auto' GREP_COLOR='100;8'
grep this demo_file
grep -r "DJ" *
grep -v "go" demo_text
grep -v -e "pattern" -e "pattern"
grep -c "pattern" filename
grep -v -c this demo_file
grep -l this demo_*
grep -o "is.*line" demo_file
grep -o -b "pattern" file
grep -n "go" demo_text