Regex Tester

Test regex live — highlighted matches, capture groups, a replace preview, plain-English explainer and a pattern library, all in your browser.

regex.sh

runs in your browser · nothing uploaded

Regular expression /g

\d digit 0-9 \w word char \s whitespace . any character ^ start of line $ end of line * zero or more + one or more ? optional {n,m} n to m times (?:…) non-capturing (?<n>…) named group […] character set | OR / alternation \b word boundary

Sample text

Replace with $1 $<name> $&

Highlighted matches

$ ls ~/tools

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