![]() Grep – Search Number Characters in File 5. The digit option for grep is also very useful to search line which will start from digit i.e. Grep – Search for Spaces or Tabs in File 4. Search Blank CharactersĪnother options like if you want to search line which will start from i.e. Grep – Search Alpha Characters in File 3. Similar options like if you want to search line which will start from only i.e. Grep – Search Alphanumeric Characters in File 2. ![]() If you have thousands of lines in a file and wanted to search a line which will start from only A-Z, a-z & 0-9 ( Alphanumeric Characters). Here I have considered tecmint.txt is the base file where we will search pattern with the help of grep command in this article for explanation. In this article I will be going to explain advanced commands on grep for the Character Classes in Linux and Unix like operating system. Suggested Read: 12 Basic Practical Examples of Linux grep Command If you will divide the word grep like g/re/p then the meaning of grep is (globally search a regular expression and print) which search pattern from the file and print the line on the screen i.e. ![]() Grep is a command line utility for searching plain-text data for lines which matching a regular expression. Have you ever been into a situation where you need to search for a string, word or pattern inside a file? if yes, then the grep utility comes handy in such situation.
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March 2023
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