[Solved] You have a script that logs errors to error.log. You want to keep... Which command should you use inside the script to save the error message "Error occurred" to the file without deleting old logs? | Linux CLI

Linux CLI - Pipes and Redirection

You have a script that logs errors to error.log. You want to keep all previous errors and add new ones each time the script runs. Which command should you use inside the script to save the error message "Error occurred" to the file without deleting old logs?

Aecho "Error occurred" > error.log

Becho "Error occurred" >> error.log

Cecho "Error occurred" >! error.log

Decho "Error occurred" < error.log

Step-by-Step Solution

Solution:

Step 1: Understand logging requirement
We want to keep old logs and add new errors, so appending is needed.
Step 2: Choose correct redirection operator
> overwrites file, >> appends to file. So >> is correct to keep old content.
Final Answer:
echo "Error occurred" >> error.log -> Option B
Quick Check:
Use >> to append logs without deleting [OK]

Quick Trick: Use >> to add logs, never > to avoid losing data [OK]

Common Mistakes:

Using > which erases old logs
Using < which is input redirection
Using invalid >! operator

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More Linux CLI Quizzes

Which command should you use inside the script to save the error message "Error occurred" to the file without deleting old logs?

Step 1: Understand logging requirement

Step 2: Choose correct redirection operator

Final Answer:

Quick Check:

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