Regular Expressions 101

name:the literal text name: (case sensitive)

\s+any whitespace character, repeated at least once

Character Class['"]?

?matches at most one character from the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

AVP_VERSIONthe literal text AVP_VERSION (case sensitive)

Character Class['"]?

?matches at most one character from the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class[\s,]+

+matches at least one character from the set below:

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

value:the literal text value: (case sensitive)

\s+any whitespace character, repeated at least once

Character Class['"]?

?matches at most one character from the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group currentValue(?<currentValue>[_\-\.\w]+)

Character Class[_\-\.\w]+

+matches at least one character from the set below:

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\wany word character

Character Class['"]?

?matches at most one character from the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

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

name:\s+['"]?AVP_VERSION['"]?[\s,]+value:\s+['"]?(?<currentValue>[_\-\.\w]+)['"]?

New

env: [ name: AVP_VERSION, value: 1.18.1 ]
      image: registry.access.redhat.com/ubi8
      env:
        - name: AVP_VERSION
          value: "1.18.0"
      command: [ sh, -c ]

Regular Expression

Substitution