103.1 Work on the Command Line LPIC-1 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   Which command displays the list of previously executed commands?

   • Als
   • Bhistory
   • Cecho
   • Dman
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2. 12foundation · easy

   What is the difference between an alias and a function in the shell?

   • AAliases are always executed before functions
   • BFunctions are only available in scripts, not in interactive shells
   • CAliases are stored in files, while functions are not
   • DFunctions can accept arguments and contain complex logic, while aliases are simple text substitutions
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4. 13foundation · easy

   Which of the following best describes the command line in a Linux system?

   • AA program that compiles source code into executable binaries
   • BA file that contains a list of commands to be executed sequentially
   • CA text-based interface where users type commands to interact with the operating system
   • DA graphical interface that allows users to click icons to run programs
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5. 14foundation · easy

   What is the result of the command `echo $USER` if the environment variable USER is set to 'alice'?

   • AIt prints `alice`
   • BIt prints an error message
   • CIt prints nothing
   • DIt prints `$USER`
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6. 15foundation · easy

   Which of the following correctly defines a shell function named `greet`?

   • Aalias greet='echo Hello'
   • Bfunction greet() { echo Hello; }
   • Cgreet() = echo Hello
   • Ddefine greet { echo Hello; }
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