#regex

sed - print lines ending with either one char or other char
sed - print lines beginning with either one char or other char
Print lines which contain a set of characters in sed
Square brackets with carrot in regex - negated ranges or sets
Parentheses in regex - subexpressions example
\b metacharacter in regex
Brackets in basic grep regex
Perform a whole words only search using a regular expression
Always put your regex between single quotes
Sets and ranges example in regex
More detailed system information about regex
Square brackets in regex - ranges or sets
A combination between pipe and question mark in regex
regex pipe - match one thing or the other
regex - this element can exist between n and m times
regex question mark - make the previous element optional
Regex plus - match the previous element 1 or more times
Regex brackets - previous element can exist "this many" times
Ansible list hosts in specific group
Regex example with dot and asterisk
Regex asterisk - match the previous element 0 or more times
Regex operators
Basic vs extended regular expressions in grep
regex period - match any one character
regex - line ends with operator
regex - line begins with operator
Replace string with another string with regexp in Ansible