3.3 Turning Commands into a Script (weight: 4) LINUX-ESSENTIALS Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which of the following correctly captures the output of the 'date' command into a variable named 'today'?

   • Atoday=date
   • Btoday=<date>
   • Ctoday=$(date)
   • Dtoday={date}
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2. 17foundation · easy

   What is the purpose of command substitution in a shell script?

   • ATo use the output of a command as a value in the script.
   • BTo run a command in the background.
   • CTo comment out a command.
   • DTo redirect the output of a command to a file.
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4. 18foundation · easy

   In a Bash script, which keyword is used to start a conditional block that executes commands only if a condition is true?

   • Awhile
   • Bif
   • Ccase
   • Dfor
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5. 19application · easy

   A junior admin at a marketing firm creates a script to automate daily report generation. The script must be run by other team members who are not familiar with the command line. The admin writes the script with a shebang line and saves it as 'daily_report.sh'. What additional step is required so that team members can run it by typing './daily_report.sh'?

   • ARename the file to 'daily_report' without the .sh extension.
   • BRun 'chmod +x daily_report.sh' to make it executable.
   • CRun 'bash daily_report.sh' every time.
   • DPlace the script in /tmp so it is world-readable.
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6. 20application · easy

   A user has a script named 'backup.sh' in their home directory. They want to run it from any directory without typing the full path. The script is executable. What should they do?

   • AAdd the directory containing the script to the PATH environment variable.
   • BCopy the script to /usr/bin.
   • CCreate an alias for the script.
   • DRun the script with 'bash backup.sh'.
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