Which of the following are requirements in order to run a shell script like a regular command from anywhere in the filesystem? (Choose THREE correct answers.)
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A. B. C. D. E.BCD
In order to run a shell script like a regular command from anywhere in the filesystem, the following requirements must be met:
The script file must be found in the $PATH When a command is entered in a shell, the shell searches for it in a set of directories specified in the $PATH environment variable. To run a shell script like a regular command from anywhere in the filesystem, the script file must be placed in one of these directories. Alternatively, you can add the directory containing the script file to the $PATH variable using the export command.
The script file must have the executable permission bit set In Linux, a file's permissions determine who can read, write, and execute the file. In order to execute a shell script like a regular command, the script file must have the executable permission bit set. This can be done using the chmod command, e.g., chmod +x script.sh.
The script must begin with a shebang-line (#!) that points to the correct interpreter The shebang-line is the first line of a shell script that specifies which interpreter should be used to run the script. For example, #!/bin/bash specifies that the script should be run using the Bash interpreter. This line must be present and correctly specify the interpreter for the script to be executed like a regular command.
Therefore, the correct answers are B, C, and D. Option A and E are incorrect because there is no need for a "script" group, and mounting the filesystem with an option "scripts" has no impact on running a shell script like a regular command.