To access the files in the current working directory from a script, use a relative path ("./"). The script runs with the user and group name "extensibility." The user "extensibility" is guaranteed to have execute permissions to those files. Also, by default, the user "extensibility" has read and write permissions to those files.
The script can create files in the current working directory or other directories, such as /tmp. If the script creates files, it sets the owner and associated group allowed to access the file to "extensibility," and gives the user and the group these permissions:
-rw-rw-r--