// Simple and useful.
^: Begainning of a line.
: / ^ Love /
$: End of a line.
: / Love $ /; / ^ $ /
.: Matches One Character.
: /L..E/
*: Matches one or more preceding character.
: / * Love / Matches Begain with some space and backed by love.
[]: Matches One Character in The Set.
: ls -l | grep "^ [d]"
Matches One Character WITHIN A RANGE INT.
: / [A-ZA-Z0-9] /
[^]: Matches One Character NOT IN The SET.
: / [^ a-z]
/: Used to escape a meta character.
: /.
<: Matches Lines Containing a Word That Begins with
: // >: Matches Lines Containing a Word That End with : / love /> / / (../): tags match characters to be used. : // (Love /) ABLE / 1ER / x {m, /}: matches Repetition (Again) of Character X, M Times. x {m, n /}: matches repetition (Again) of character x, m to n Times.
