How can I make grep search for a string without interpreting it as a regular expression?

Computer Tips - How can I make grep search for a string without interpreting it as a regular expression?

Date: 2017may23 OS: Linux Q. How can I make grep search for a string without interpreting it as a regular expression? A. Use fgrep, eg:

fgrep '*' *.txt

Not you still have to protect wildcard characters from the shell.