1Z0-821 practice question 19 of 30

What is the output of the following command, if executed using the default shell for the root role account of a standard Live CD Install of Oracle Solaris 11? echo '$SHELL'

Full set: 243 questions

Answer options

A: /usr/bin/bash

B: /usr/bin/ksh

C: $SHELL Correct answer

D: the PID for the current shell

Correct Answer:

C. $SHELL

Explanation

Single quotes are most strict. They prevent even variable expansion. Double quotes prevent wildcard expansion but allow variable expansion. For example:
#!/bin/sh
echo $SHELL echo "$SHELL" echo '$SHELL' This will print: /usr/bin/bash /usr/bin/bash $SHELL

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