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Matching literal text
The simplest pattern is the literal text you want to find.
The pattern cat finds the three characters c, a, and t in a row. Most characters will match themselves, but some of them are special (such as * or ?) - we'll discuss those metacharacters in the upcoming lessons.
Match every occurrence of the word cat, including when it sits inside a longer word.
/ /
my cat sleeps all day
must match: "cat"
concatenate the strings
must match: "cat"
cat catalog cathedral
must match: "cat" "cat" "cat"
a dog barks
must match nothing