Regular Expressions 101

^start of line

Group 1([a-z-]+|[\w]+)

1st Alternative[a-z-]+

Character Class[a-z-]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[\w]+

Character Class[\w]+

+matches at least one character from the set below:

\wa Unicode word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2(((?!\.s1).+\.)?(co1|az1|ut1|eng|au1)\.(qprod|qops)\.net)

Group 3((?!\.s1).+\.)?

?repeats the group contents below at most once:

Negative Lookahead(?!\.s1)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

s1the literal text s1 (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 4(co1|az1|ut1|eng|au1)

1st Alternativeco1

co1the literal text co1 (case sensitive)

2nd Alternativeaz1

az1the literal text az1 (case sensitive)

3rd Alternativeut1

ut1the literal text ut1 (case sensitive)

4th Alternativeeng

engthe literal text eng (case sensitive)

5th Alternativeau1

au1the literal text au1 (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 5(qprod|qops)

1st Alternativeqprod

qprodthe literal text qprod (case sensitive)

2nd Alternativeqops

qopsthe literal text qops (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

netthe literal text net (case sensitive)

$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

Regular Expression

^([a-z-]+|[\w]+)\.(((?!\.s1).+\.)?(co1|az1|ut1|eng|au1)\.(qprod|qops)\.net)$

New

test-app.az1.qprod.net
jwm12535.s1.az1.qprod.net
testing2.eng.qops.net
kvm1.c1.co1.qprod.net
bs1.co1.qprod.net
staging.s1.co1.qprod.net
staging.co1.qprod.net
server.s1.co1.qprod.net
s1.co1.qprod.net
server2.co1.qprod.net
s.co1.qprod.net
testing.az1.qprod.net
something1.eng.qops.net

Regular Expression

Extraction