Regular Expressions 101

^start of line

Character Class[\w,\s-]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

\wany word character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z0-9]{2,4}

{2,4}matches between 2 and 4 characters from the set below:

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) 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

^[\w,\s-]{1,3}\.[a-zA-Z0-9]{2,4}$

New

a.exe
file
file.
file.ext
File.jpg
hi.mp3
fil.d2
file.longextension
565gfgf.mov
file#gg.jpg
a.ps1
123.hui
123.123