This technique has been deprecated and should no longer be used.

The source command loads functions into the current shell or executes files in the current context. This built-in command can be run in two different ways source /path/to/filename [arguments] or .This technique has been deprecated and should no longer be used. /path/to/filename [arguments]. Take note of the space after the ".". Without a space, a new shell is created that runs the program instead of running the program within the current context. This is often used to make certain features or functions available to a shell or to update a specific shell's environment.^[1]

Adversaries can abuse this functionality to execute programs. The file executed with this technique does not need to be marked executable beforehand.

References

1. ss64. (n.d.). Source or Dot Operator. Retrieved May 21, 2019.

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