Mass Update Logins/Passwords

I had an attempt to write up a script to update a bunch of items. Happy to get any feedback for automating grabbing all the user names from a vault (I'd just hard coded them for now).

#!/bin/zsh

#
# Update the demo passwords in 1password.
#

# Define our variables
new_password="THIS IS THE NEW PASSWORD"
user_names=(
"aa"
"bb"
"cc"
"dd"
)
vault="Vault A"

# Sign in
# In case the details aren't stored use the command below to initialize it
# op signin abc.1password.com abc@def
eval $(op signin abc)

# Let's update all the users
for user_name in "${user_names[@]}"; do
echo "Updating: $user_name"
op edit item "$user_name" --vault "${vault}" password=$new_password
echo "Update complete"
done

op signout