Which of the following command sets the Bash variable named TEST with the content FOO?
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A. B. C. D.D
The correct command to set the Bash variable named TEST with the content FOO is:
D. TEST="FOO"
Explanation:
A Bash variable can be set with the equal (=) sign without any spaces between the variable name, equal sign, and the value. The correct syntax is:
variable_name=value
Therefore, in the given options, only option D follows the correct syntax to set the variable TEST with the content FOO. The other options have various syntax errors or do not follow the Bash syntax for variable assignment.
Option A: set TEST="FOO" This command uses the set command to set the variable TEST, but it uses double quotes to enclose the value, which is not required for variable assignment. The double quotes will be treated as part of the value, including the = symbol. Therefore, this command will set the variable TEST to "FOO" instead of FOO.
Option B: TEST = "FOO" This command has a syntax error because it uses spaces around the equal sign. In Bash, spaces around the equal sign are not allowed in variable assignments. This command will return an error message.
Option C: var TEST="FOO" This command is not a valid syntax for setting a Bash variable. The keyword "var" is not recognized by Bash for variable assignment. The correct syntax only requires the variable name and the value, separated by the equal sign.
Therefore, the correct option to set the Bash variable named TEST with the content FOO is D. TEST="FOO".