You want to run two commands in a script: cmd1 and cmd2. You want to run cmd2 only if cmd1 succeeded (exit code 0). Which is the best way to do this?

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Bash Scripting - Error Handling

You want to run two commands in a script: cmd1 and cmd2. You want to run cmd2 only if cmd1 succeeded (exit code 0). Which is the best way to do this?

Acmd1 && cmd2

Bcmd1 || cmd2

Ccmd1; if [ $status -eq 0 ]; then cmd2; fi

Dif [ cmd1 ]; then cmd2; fi

Step-by-Step Solution

Solution:

Step 1: Understand conditional execution operators
The operator && runs the second command only if the first succeeds (exit code 0).
Step 2: Compare options for best practice
cmd1 && cmd2 uses cmd1 && cmd2 which is concise and reliable for this purpose.
Final Answer:
cmd1 && cmd2 -> Option A
Quick Check:
Use && to run second command only if first succeeds [OK]

Quick Trick: Use && to run next command only if previous succeeds [OK]

Common Mistakes:

MISTAKES

Using || which runs second if first fails
Checking $? manually when && is simpler
Using if with command but less concise

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More Bash Scripting Quizzes

You want to run two commands in a script: cmd1 and cmd2. You want to run cmd2 only if cmd1 succeeded (exit code 0). Which is the best way to do this?

Step 1: Understand conditional execution operators

Step 2: Compare options for best practice

Final Answer:

Quick Check:

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