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[DOC] Another example for spawn (#8575)

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Burdette Lamar 2023-10-01 18:37:40 -05:00 • committed by GitHub
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process.c
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@ -4952,18 +4952,24 @@ rb_f_system(int argc, VALUE *argv, VALUE _)
*
* Argument +exe_path+ is one of the following:
*
* - The string path to an executable to be called.
* - The string path to an executable to be called:
*
* spawn('/usr/bin/date') # Path to date on Unix-style system.
* Process.wait
*
* Output:
*
* Thu Aug 31 10:06:48 AM CDT 2023
*
* - A 2-element array containing the path to an executable
* and the string to be used as the name of the executing process.
* and the string to be used as the name of the executing process:
*
* Example:
* pid = spawn(['sleep', 'Hello!'], '1') # 2-element array.
* p `ps -p #{pid} -o command=`
*
* spawn('/usr/bin/date') # => 799198 # Path to date on Unix-style system.
* Process.wait # => 799198
* Output:
*
* Output:
*
* Thu Aug 31 10:06:48 AM CDT 2023
* "Hello! 1\n"
*
* Ruby invokes the executable directly, with no shell and no shell expansion.
*