ssh-agent and crontab -- is there a good way to get these to meet?

ssh-agent and crontab -- is there a good way to get these to meet?

bash unix cron ssh-keys

bash

ssh-keygen accepting stdin

linux bash variables ssh-keys

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Add SSH key from variable

bash ssh ssh-keys

bash

How to avoid always entering passphrase for id_rsa on terminal startup?

bash ssh terminal ssh-keys passphrase

bash