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You can not find EDITOR as it is likely not set. If an environment variable has not been defined, then it will not show up in printenv or similar commands.
add
Code:
export EDITOR=...
to .profile to set it. Log out, log in for it to take effect.
For a single shell session, you can type the above at a shell prompt. Be aware that it will no longer be set once you exit the shell.
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