Regular Expressions 101

1st Alternative^iOS[2][1][0-3]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[2]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

$end of line

2nd Alternative^iOS[2][0]\d$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[2]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\da digit

$end of line

3rd Alternative^iOS[1][0-9][0-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-9]

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

Character Class[0-9]

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

$end of line

4th Alternative^iOS[1-9][0-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

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

$end of line

5th Alternative^iOS[1-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

$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.

Search reference

Regular Expression

^iOS[2][1][0-3]$|^iOS[2][0]\d$|^iOS[1][0-9][0-9]$|^iOS[1-9][0-9]$|^iOS[1-9]$

New

iOS0
iOS7
iOS8
iOS9
iOS10
iOS11
iOS12
iOS13
iOS14
iOS200
iOS201
iOS202
iOS203
iOS205
iOS214

Regular Expression

Extraction