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+---
+tags:
+  - jq
+  - json
+---
+`jq` is a filter program. Everything , including literals, are `filters` in jq.
+filter have input and output.
+ops that combine filters like addition or division feed same input to both filters before doing the operation e.g `[1 2 3] | add / length` < array is passd to both add and length and then de division is done.
+
+identity filter use quotes or brackets and quotes if name has special values such as whitespace. `."Fo o"` || `.["Fo o"]`
+