Linux Commands Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Linux Commands Interview Questions

Questions Answers Views Company eMail

What is the command to change from /etc/passwd file to /etc/shadow file?

4 10704

i am prepairing for 2+ yrs exp in oracle/unix production support, which topics should i cover in unix/linux and sql plz help

HCL,

2 29910

what is lilo?How it is useful in linux?

HCL, SofTec,

3 12497

I have a user name in /etc/vsftpd/user_list which is for blocking the ftp user. Now i blocked the user as well ,but without removing username in user_list i wanna access the users home directory and his own directory .How will you access the data ????

Span Systems,

3 8457

I have my default runlevel is init5 now i have configured to init 3,now i wanna run my system in init3 process without reboot the system .How will you do for this scenario?

Span Systems,

6 10028

What is the difference between kill and kill -9 commands?

Sabre,

4 11407

what is the last file executed during the boot process?

iOPEX,

5 11121

what is first RHEL 5.x version support ext4 filesystem?

2 6539

In /boot/grub/grub.conf file there is a line kernel /vmlinuz-version ro root=/dev/sda2, What is the meaning of "/" before vmlinuz? Pls explain?

HCL,

1 6589

How we can set the password length in linux?

Wipro,

2 7634

When u comment the ctrl+alt+del trap in the /etc/inittab save the file. Tell the command to save the changes without rebooting the machine?

HCL,

1 6670

How to activate / deploy licence in RHEL 6 and what will happen if you don't activate / deploy licence in RHEL 6 ?

2645

How to add Crete a new ftp user? or How to add a exiting user into FTP ?

Mind Tree,

1 4999

How did you do the Health check in Linux?

Mind Tree,

1 7524

In Linux how you set time a limit on quota?

Mind Tree,

1 6702

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Un-Answered Questions { Linux Commands }

What is the copy command in linux?

947

What is makefile in unix?

1011

How do I stress test my cpu?

959

Which Command used to lock user password in Linux?

1022

What is $@ in shell?

919

How do you sort cpu in top command?

1024

Which command is used to terminate a process?

899

What is bash command?

964

How do I permanently delete linux history?

915

Explain shift command of linux?

1056

What is in mkdir command?

1035

How do I run a script in linux?

1032

How many commands are there in linux?

1025

Hi everyone i want to learn Devops in Hyderabad can anyone please suggest me best institute.

1566

What are the examples of simple command?

1023

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