How to update all in all conda environments?

Instead of manually typing conda update -n envname --all for every environment, How can I update them all at once?

Is there a better way than what I've come up with?

This is the shell script I came up with.

• It gets the list of environments in json form.
  • Then uses jq to access just the envs portion of that json.
  • I'm iterating through this list... which is a list of paths.
• I modify each iteration by:
  • Slicing it to remove the " on either end.
  • Reversing it.
  • Splitting it on / and taking the first piece.
  • Undoing the reverse.
• This updates all in the environment, automatically saying yes (-y) when prompted, and suppressing extensive output (-q).

for var in $(conda env list --json | jq '.envs[]')
do
conda update -n $(echo ${var:1:-1} | rev | cut -d'/' -f1 | rev) --all -y -q
done