Regular Expressions 101

Pro

1st Alternative\$\{\$\{([\w-_\[\]]*?)\}\}

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

Group 1([\w-_\[\]]*?)

Character Class[\w-_\[\]]*?

*?matches any number of characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

2nd Alternative\$\{([\w-_\[\]]*?)\}

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

Group 2([\w-_\[\]]*?)

Character Class[\w-_\[\]]*?

*?matches any number of characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

3rd Alternative\$\{(((.*?)\})+)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

Group 3(((.*?)\})+)

Group 4((.*?)\})+

+repeats the group contents below at least once:

Group 5(.*?)

.*?any character (except for line terminators), repeated any number of times

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\$\{\$\{([\w-_\[\]]*?)\}\}|\$\{([\w-_\[\]]*?)\}|\$\{(((.*?)\})+)

New



${${IP}${hi}${hello}${ab${cd}ef}${CUPM_IP}}
${LAST-NA[M]E}
${[BRACKETS]}

${CP_IM} ${b} ${1} ${} ${LAST-NAM[E]} ${12} ${34}${56} ${[BRACKETS]}

 hello test b ${hg ${$} ${hello word} ${12-34_ab%}

${hg ${$}}

${${hi}}