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+---
+tags:
+  - jq
+  - howto
+---
+Double escapes are important!
+
+```
+jq -r '.fixed_ips[] | select(.ip_address | test("([0-9]+\\.)+")) | .ip_address'
+```
+
+An example of constructing an array from stdin and filtering empty lines is found in [[Using JQ to construct an array and filtering empty strings]].
+\ No newline at end of file