Regular Expressions 101

Explanation
Pro

\ban ASCII word boundary

Ktr_the literal text Ktr_ (case sensitive)

Character Class[0-9]+

+matches at least one character from the set below:

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Negative Lookahead(?!1[68]0\b)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[68]

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\ban ASCII word boundary

Character Class[0-9]+

+matches at least one character from the set below:

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

\ban ASCII word boundary

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.

25 tokens

\bKtr_[0-9]+_(?!1[68]0\b)[0-9]+\b

New

Ktr_12345_180 Ktr_12345_160 Ktr_12345_1130 Kst_12345_180 Kst_12345_112 Kst_12345_120 Kst_12345_160

Ktr_12345_180 Ktr_12345_160 Ktr_12345_1130 Kst_12345_180 Kst_12345_112 Kst_12345_120 Kst_12345_160