You try to run tail -f /var/log/app.log but get the error: tail: cannot open '/var/log/app.log' for reading: Permission denied. What should you do to fix this?

medium📝 Troubleshoot Q14 of 15

Linux CLI - Viewing and Editing Files

You try to run tail -f /var/log/app.log but get the error: tail: cannot open '/var/log/app.log' for reading: Permission denied. What should you do to fix this?

ADelete the log file and try again

BRun the command with <code>sudo</code> to get permission

CUse <code>head -f</code> instead

DRestart the system to fix permissions

Step-by-Step Solution

Solution:

Step 1: Understand the error message
The error says permission denied, meaning the current user cannot read the file.
Step 2: Fix permission issue
Running the command with sudo gives temporary admin rights to read the file.
Final Answer:
Run the command with sudo to get permission -> Option B
Quick Check:
Permission denied fix = use sudo [OK]

Quick Trick: Permission denied? Try sudo before the command [OK]

Common Mistakes:

MISTAKES

Deleting the log file unnecessarily
Using head -f which is invalid
Restarting system without checking permissions

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You try to run tail -f /var/log/app.log but get the error: tail: cannot open '/var/log/app.log' for reading: Permission denied. What should you do to fix this?

Step 1: Understand the error message

Step 2: Fix permission issue

Final Answer:

Quick Check:

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