`nohup` alone dies when the session ends

Symptom

Launched with nohup ... &; the shell session changed and it was gone. Log cut off mid-line, zero processes.

Cause

Shared hosting's restricted shell reaps child processes when the login session ends.

Fix

setsid nohup python3 script.py args < /dev/null > out.log 2>&1 & disown

• setsid detaches into a new session
• < /dev/null detaches stdin
• disown removes it from the job table

Side lesson

Long jobs get all their arguments in one process. Split into several launches and they block each other on the external API's concurrency limit.

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