select with startswith for jq FiltersThe jq command is amazing, but sometimes not particularly intuitive.
To select all the objects that have a field with a particular prefix is
one example:
jq '.[] | select(.name|startswith("rwx"))' images.json
There’s also an endswith. I noticed that select is usually what I
want (and not map) because I still want the entire object that
matched. This allows an equivalent of piping grep to another grep to
reduce down to only what I need.
#jq #json #tips