regex101: PCRE (Legacy) Match Workspace

Group 1(.*\/.*)

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

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

Positive Lookbehind(?<=[vV])

Character Class[vV]

vthe literal v (118₁₀ / 166₈ / 76₁₆) (case sensitive)

Vthe literal V (86₁₀ / 126₈ / 56₁₆) (case sensitive)

Group 2([0-9]+)?

?repeats the group contents below at most once:

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 3([_\w]*)

Character Class[_\w]*

*matches any number of characters from the set below:

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\wany word character

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

Search reference

Regular Expression

(.*\/.*)(?<=[vV])([0-9]+)?([_\w]*)

Test String
New

# Ignore version number and user abbreviation (if existing) at the end of a file name.

/mnt/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101_sij.nk
/mnt/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101.nk

X:/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101_sij.nk
X:/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101.nk

Volumes/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101_sij.nk
Volumes/Projects/some-project_som_1234/001/001/comp/som_001_001_SH10_comp_v101.nk

Regular Expression

Test StringNew

Test String
New