Regular Expressions 101

^start of line

Group 1([\w.]{1,})

Character Class[\w.]{1,}

{1,}matches at least one character from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2([\w]{3,4})

Character Class[\w]{3,4}

{3,4}matches between 3 and 4 characters from the set below:

\wany word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3([\w]{3,4})

Character Class[\w]{3,4}

{3,4}matches between 3 and 4 characters from the set below:

\wany word character

$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.]{1,})\.([\w]{3,4})\.([\w]{3,4})$

New

file.txt
file.txt.txt
file.one.two.thre
file.one.two.three
file.google.txt.jar
jim.joe.chris
something.filename.pdf.lnk
filename.pdf.123
thisfile.hasadotbutonlyone.exe
thisfile.xlsx.xlsx
thisfile.12.123

Regular Expression

Extraction