Regular Expressions 101

Explanation

Pro

^start of string

Group 1([a-z][a-z0-9-]*)

Character Class[a-z]

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

Character Class[a-z0-9-]*

*matches any number of characters from the set below:

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Negative Lookahead(?![ #])

Character Class[ #]

the literal (32₁₀ / 40₈ / 20₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

Group 2(((?![\\="+,;<>]).)|(\\[ \\#="+,;<>])|(\\[a-f0-9][a-f0-9]))*

*repeats the group contents below any number of times:

1st Alternative((?![\\="+,;<>]).)

Group 3((?![\\="+,;<>]).)

Negative Lookahead(?![\\="+,;<>])

Character Class[\\="+,;<>]

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.any character (except for line terminators)

2nd Alternative(\\[ \\#="+,;<>])

Group 4(\\[ \\#="+,;<>])

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Character Class[ \\#="+,;<>]

the literal (32₁₀ / 40₈ / 20₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

3rd Alternative(\\[a-f0-9][a-f0-9])

Group 5(\\[a-f0-9][a-f0-9])

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Character Class[a-f0-9]

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[a-f0-9]

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 6(,([a-z][a-z0-9-]*)=(?![ #])(((?![\\="+,;<>]).)|(\\[ \\#="+,;<>])|(\\[a-f0-9][a-f0-9]))*)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 7([a-z][a-z0-9-]*)

Character Class[a-z]

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

Character Class[a-z0-9-]*

*matches any number of characters from the set below:

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Negative Lookahead(?![ #])

Character Class[ #]

the literal (32₁₀ / 40₈ / 20₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

Group 8(((?![\\="+,;<>]).)|(\\[ \\#="+,;<>])|(\\[a-f0-9][a-f0-9]))*

*repeats the group contents below any number of times:

1st Alternative((?![\\="+,;<>]).)

Group 9((?![\\="+,;<>]).)

2nd Alternative(\\[ \\#="+,;<>])

3rd Alternative(\\[a-f0-9][a-f0-9])

$end of string, or before its final line terminator

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

^([a-z][a-z0-9-]*)=(?![ #])(((?![\\="+,;<>]).)|(\\[ \\#="+,;<>])|(\\[a-f0-9][a-f0-9]))*(,([a-z][a-z0-9-]*)=(?![ #])(((?![\\="+,;<>]).)|(\\[ \\#="+,;<>])|(\\[a-f0-9][a-f0-9]))*)*$

dc=kgfsl,dc=com