Linux CLI - Networking Commands
What will be the output of the command
netstat -tuln | grep ':22' if the SSH service is running and listening on port 22?What will be the output of the command netstat -tuln | grep ':22' if the SSH service is running and listening on port 22?
medium📝 Command Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand command components
netstat -tulnlists TCP and UDP ports numerically and listening;grep ':22'filters lines with ':22'.Step 2: Interpret output if SSH runs
If SSH listens on port 22, output will include a line showing TCP port 22 in LISTEN state.Final Answer:
A line showing TCP port 22 in LISTEN state -> Option CQuick Check:
SSH on port 22 = netstat output with :22 line [OK]
Quick Trick: grep ':22' filters netstat output for SSH port [OK]
Common Mistakes:
- Expecting no output if port is open
- Thinking command syntax is invalid
- Confusing UDP ports with TCP port 22
Master "Networking Commands" in Linux CLI
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Linux CLI Quizzes