#linux #mprashant #linux_interview_questions

Hello dosto ki haal chaal,

In this video I have covered 70 Linux Interview Questions which will definitely help you in your Linux job interviews and other technical exams of Linux.
I have covered Linux job interview questions related to Linux Basics, Networking, SSH, Monitoring, Process, Services, Automation, File Permission, Wildcards, Environment Variables, etc.

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70 Linux Interview Questions

What is RHEL Linux stands for?
What is swap space?
Search a word in a file and replace it in entire file?
What is use of SCP command?
What is use of FTP command?
What is alias and how to setup?
Difference between upgrade and update system?
Name default ports used for DNS, SMTP, FTP, SSH, DHCP and squid.
How to check if a package is installed or not?
Which of the following commands sends exactly three ping packets to google.com?
Which file contains a list of group names and GIDs? (/etc/group/)
Which of the following contains the value of the exit status of the previously executed command?
Which command displays the number and type of processors used by a Linux system?
Which command should you use to get a list of connected USB devices?
Which of the following environment variables is used as the default argument for the “cd” command when no directory is provided?

True or False. A command following a semicolon will be executed no matter the exit status of the command that preceded the semicolon.
Example: cd /root ; cat /etc/passwd

What are the valid values of the exit status?
According to the FHS, what is the correct directory for log files?
What port must be open to ping a given host?
Can you give some name of Linux distributions?
What is kernel?
How will you transfer file from a Linux server to your windows OS and vice versa?
How you can split a file into two?
How you can get the unique values from a list?
Using VI editor, how you will edit and save a file?
What is the difference between find and locate command?
What is TEE Command used for?
What is Xargs used for?
How you can find no. of files, folders in a directory?
I want to read only line 25 to 30th Line, how you will do it?
What is the use of Tar command?
How to redirect both standard output and error to a file?
Name some commands for DNS resolution?
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Automation
What is use of At command?
Which service is used by At command?
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Permissions
Which command syntax is correct if you want to assign read only permission to everyone and write permission to the owner of the file?
Which command changes the group ownership of the “/var/www” directory to the “apache” group? (chgrp apache /var/www)
What is chmod 777 file_name?
What is ACL and it’s advantage?
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Links:
What are links in Linux?
What are Hard and Soft Links?
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Environment Variables
What command you can use to see all the environment variables?
What are the different ways to set environment variables?
How you can set environment variables in Linux?
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Process:
What command allows you to display all the process IDs of the running nginx processes?
What is nice value of a process?
How to check the nice value of a process?
You want a process with a PID of 8675 to complete its task faster than the default rate. Which command should you run to accomplish this goal?
What command can be used to check the %CPU and %Memory of a process?
If you want to run a task/script in background even if you close your terminal, what is the way?
How to see all the active jobs?
How to resume a stopped job in background or foreground?
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Monitoring
Which command displays information about kernel-related messages along with hardware and system startup messages stored in kernel ring buffer?

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