One of the most useful ways to move around in a large file quickly is by searching for text, or more properly, a pattern of characters. Sometimes a search can be performed to find a misspelled word or to find each occurrence of a variable in a program.
The search command is the special character / (slash). When you enter a slash, it appears on the bottom line of the screen; you then type in the pattern that you want to find: /pattern.
A pattern can be a whole word or any other sequence of characters (called a "character string"). For example, if you search for the characters red, you will match red as a whole word, but you'll also match occurred. If you include a space before or after pattern, the spaces will be treated as part of the word. As with all bottom-line commands, press RETURN to finish. vi, like all other UNIX editors, has a special pattern-matching language that allows you to look for variable text patterns; for example, any word beginning with a capital letter, or the word The at the beginning of a line.
We'll talk about this more powerful pattern-matching syntax in Chapter 6. For right now, think of pattern simply as a word or phrase.
vi begins the search at the cursor and searches forward, wrapping around to the start of the file if necessary. The cursor will move to the first occurrence of the pattern. If there is no match, ...