[Solved] How can you schedule multiple commands to run once at 10 PM using at? — Ans: echo -e "cd /tmp\nls -l" | at 22:00 | Linux CLI

Linux CLI - Cron and Scheduling

How can you schedule multiple commands to run once at 10 PM using at?

Aat 22:00 "cd /tmp; ls -l"

Becho "cd /tmp; ls -l" | at 22:00

Cecho -e "cd /tmp\nls -l" | at 22:00

Dat 22:00; cd /tmp; ls -l

Step-by-Step Solution

Solution:

Step 1: Understand how to pass multiple commands to at
Multiple commands can be passed by echoing them separated by newlines and piping to at.
Step 2: Evaluate options
echo -e "cd /tmp\nls -l" | at 22:00 uses echo -e with newline escape to send two commands correctly. echo "cd /tmp; ls -l" | at 22:00 uses semicolon but without newline, which may work but is less reliable. The other options misuse syntax by passing commands as arguments or separating incorrectly.
Final Answer:
echo -e "cd /tmp\nls -l" | at 22:00 -> Option C
Quick Check:
Use newline-separated commands piped to at = B [OK]

Quick Trick: Use newline-separated commands piped into at [OK]

Common Mistakes:

Master "Cron and Scheduling" in Linux CLI

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How can you schedule multiple commands to run once at 10 PM using at?