Regex - A Cheatsheet
[abc] - a, b or c[abc]zz - azz or bzz or czz[a-c]zz - to define ranges[a-cx-z]zz - combining rangesfile[1-3]
[^k]ing - ring, sing, $ing, but not king. - exclusion [^a-c]at will match - fat and hat, but not bat or cat`.
a.c will match aac, abc, a0c, ...
