How would you write a command chain to run cmd1, then cmd2 only if cmd1 fails, and finally cmd3 regardless of previous results?

hard📝 Application Q9 of 15

Linux CLI - Pipes and Redirection

How would you write a command chain to run cmd1, then cmd2 only if cmd1 fails, and finally cmd3 regardless of previous results?

Acmd1 || cmd2 ; cmd3

Bcmd1 && cmd2 || cmd3

Ccmd1 ; cmd2 && cmd3

Dcmd1 && cmd2 ; cmd3

Step-by-Step Solution

Solution:

Step 1: Understand chaining requirements
Run cmd2 only if cmd1 fails, so use cmd1 || cmd2.
Step 2: Run cmd3 always
Use ; to run cmd3 regardless of previous commands.
Final Answer:
cmd1 || cmd2 ; cmd3 runs cmd3 always, cmd2 only if cmd1 fails. -> Option A
Quick Check:
|| for failure, ; for unconditional [OK]

Quick Trick: Use || for failure, ; for always run next [OK]

Common Mistakes:

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