Best Answer: How Do You Search and Replace a String in a File in Linux?

How do I search for a specific string in a file in Linux?

Grep is a Linux / Unix command-line tool used to search for a string of characters in a specified file. The text search pattern is called a regular expression. When it finds a match, it prints the line with the result. The grep command is handy when searching through large log files.

How do you find and replace a string in multiple files in Linux?

sed

1. i — replace in file. Remove it for a dry run mode;
2. s/search/replace/g — this is the substitution command. The s stands for substitute (i.e. replace), the g instructs the command to replace all occurrences.