Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

After adding the line below to her ~/.bashrc and opening a new terminal session,

alias backup='tar -czf $1.tgz $1'

a junior administrator tries to run the command

backup project

but receives the error message:

tar: .tgz: Cannot stat: No such file or directory

Which action will correctly create a reusable shortcut that accepts the directory name as an argument?

  • Replace the alias with a shell function, for example:

    backup() { tar -czf "$1.tgz" "$1"; }

  • Move the alias definition to /etc/profile so it is processed earlier during shell start-up.

  • Use an imaginary -E option with alias to enable parameter expansion:

    alias -E backup='tar -czf $1.tgz $1'

  • Escape the positional parameters in the alias definition:

    alias backup='tar -czf \$1.tgz \$1'
CompTIA Linux+ XK0-006 (V8)
System Management
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