[Solved] What is wrong with this bash script snippet? tempfile=mktemp echo $tempfile - Ans: The command mktemp is not executed; it is assigned as a string | Bash Scripting

Bash Scripting - File Operations in Scripts

What is wrong with this bash script snippet?

tempfile=mktemp
echo $tempfile

AThe script lacks <code>#!/bin/bash</code> shebang

BThe variable <code>tempfile</code> is not declared

CThe <code>echo</code> command is missing quotes

DThe command <code>mktemp</code> is not executed; it is assigned as a string

Step-by-Step Solution

Solution:

Step 1: Check variable assignment
Assigning tempfile=mktemp sets the string 'mktemp' to the variable, not the output of the command.
Step 2: Correct usage
Use command substitution: tempfile=$(mktemp) to execute and assign the output.
Step 3: Other options
The variable tempfile is not declared is incorrect because variables do not require declaration. The echo command is missing quotes is not an error; quotes are optional here. The script lacks #!/bin/bash shebang is unrelated to the error.
Final Answer:
The command mktemp is not executed; it is assigned as a string -> Option D
Quick Check:
Is command substitution missing? Yes. [OK]

Quick Trick: Use $(mktemp) to execute command, not plain assignment [OK]

Common Mistakes:

MISTAKES

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