pass multiple variables to jo? about jo HOT 3 OPEN

Extracting data from a JSON file with text tools like grep is generally not a good idea; one little change in the data and your script suddenly outputs nothing or (worse) incorrect values. Use a tool that understands JSON to tear raw.json apart, like jq.

That said, something like the following should work without introducing any new tools (UNTESTED):

# your original data gathering pipeline (minus the unnecessary `cat`)
grep -o -i '"year":[[:blank:]][[:digit:]]\{4\}' $file | grep -o '[[:digit:]]\{4\}' | sort -n | uniq -c |
# bash's builtin read is your friend
while read -r uploads year; do
  # generate each internal object
  jo year="$year" uploads="$uploads"
done | 
# shove them all into a JSON array
jo -p -a

from jo.

@gromgit Thank you! That will help me get started. I was indeed missing | jo -p -a as a secondary pipe. I think I finally managed to get my head wrapped around how I should deal with nix tools: don't expect one tool to do everything you need, but rather use tools and pipe them together.

A side note: I have seen your answer to many bash questions in issues, perhaps it's an idea to write a small jo cookbook with various examples? jq manual has examples just below each command. Just a suggestion, not a requirement.

from jo.