New posts in Regular Expression

grep - regex that will find exactly 3 a's in a string

Why do I have to quote an escaped character in a regular expression for grep, but not on online regex engines?

How to instruct sed to substitute only once while using multiple substitute expressions?

if with regex in bash code

Bounds in awk regular expression do not work on OpenBSD

Why is the hyphen symbol - not discoverable in a regular expression in the find command?

Are Blanks, Spaces, and tabs part of a string?

Pattern matching in a zsh conditional expression

grep extract number range

Print out specific field using regular expression in Linux