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Why this exists Checking or changing twenty servers one at a time is slow and error prone. SSH plus a little shell does it in parallel and reports the outcome for every host. The details that matter are behaving…
Run Commands on Many Servers over SSH in Parallel
Run a command on every host in a list with SSH keys and no prompts, in parallel with xargs -P, with timeouts, per-host output files and a clear summary of who succeeded and who failed. Includes the classic gotcha where ssh swallows the loop input.
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