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doc: Clarify path search in child_process spawn #41418

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merged 4 commits into from Mar 14, 2022
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doc: Clarify path search in child_process spawn #41418

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doc: Clarify path search in child_process spawn
zobo Jan 6, 2022
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Update doc/api/child_process.md
zobo Jan 6, 2022
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Update child_process.md
zobo Jan 11, 2022
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zobo Jan 13, 2022
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7 changes: 5 additions & 2 deletions doc/api/child_process.md
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Expand Up @@ -36,8 +36,11 @@ identical to the behavior of pipes in the shell. Use the `{ stdio: 'ignore' }`
option if the output will not be consumed.

The command lookup is performed using the `options.env.PATH` environment
variable if it is in the `options` object. Otherwise, `process.env.PATH` is
used.
variable if `env` is in the `options` object. Otherwise, `process.env.PATH` is
used. If `options.env` is set without `PATH`, lookup on Unix is performed
on a default search path search of `/usr/bin:/bin` (see your operating systems
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manual for execvpe/execvp), on Windows the current processes environment
variable `PATH` is used.

On Windows, environment variables are case-insensitive. Node.js
lexicographically sorts the `env` keys and uses the first one that
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