![]() Contents of fruits.txt How to Find a Matching String with grep Melons – watermelons, rockmelons and honeydew melons Tropical and exotic – bananas and mangoesīerries – strawBERRIES, raspberries, blueberries, kiwifruit and passionfruit Stone fruit – nectarines, apricots, peaches and plums In the coming examples, we will use the file fruits.txt with the following content: apples and pearsĬitrus – oranges, grapefruits, mandarins and limes -c: Count the number of occurrences of the provided pattern.-w: Find the exact matching word from the input file or string.-n, -line-number: Prefix each line of the matching output with the line number in the input file.-v, -invert-match: Selects the non-matching lines of the provided input pattern.-i, -ignore-case: Ignores case distinctions in patterns and input data.In this article, we will discuss the following options that can be used with grep: It is a good practice to close the PATTERN in quotes when grep is used in a shell command. Grep finds each line that matched the provided PATTERN. ![]() In the above syntax, grep searches for PATTERNS in each FILE. The syntax of the grep command is as follows: grep PATTERNS Grep syntax In this article, we will discuss the grep command's syntax and its usage with some examples. ![]() ![]() If you are a system admin who needs to scrape through log files or a developer trying to find certain occurrences in the code file, then grep is a powerful command to use. grep is short for "global regular expression print". Grep is a useful command to search for matching patterns in a file. ![]()
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