docs(grep): 📝 Simple invert grep example.

chrisguest75 · Mar 21, 2024 · 4de90af · 4de90af
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commit 4de90af
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diff --git a/51_grep_and_regex/README.md b/51_grep_and_regex/README.md
@@ -32,6 +32,9 @@ grep -A 10 -B 10
 
 # OR has to be escaped.
 grep "continuity\|PID"
+
+# inverting match
+grep -v "lines not containing this string"
 ```
 
 ## Perl grep expressions