Regular Expressions 101

Pro

Software Version the literal text Software Version (case sensitive)

Group 1(\d.\d{1,2}(?:$?\d{1,2}?$?\d{1,2}?)?)

\da Unicode decimal digit

.any Unicode character (except for line terminators)

\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times

Non-Capturing Group(?:$?\d{1,2}?$?\d{1,2}?)?

?repeats the group contents below at most once:

\(?optionally matches the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{1,2}?a Unicode decimal digit, repeated between 1 and 2 times

\)?optionally matches the literal ) (41₁₀ / 51₈ / 29₁₆)

\d{1,2}?a Unicode decimal digit, repeated between 1 and 2 times

\W*any character that is not a Unicode word character, repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Software Version (\d.\d{1,2}(?:\(?\d{1,2}?\)?\d{1,2}?)?)\W*$

New

Cisco Adaptive Security Appliance Software Version 9.12(1)2 
ASAv1 up 23 mins 50 secs
Serial Number: 9A2AL26E95V

Cisco Adaptive Security Appliance Software Version 9.12(1)2 
ASAv1 up 23 mins 50 secs
Serial Number: 9A2AL26E95V