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 10880

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 30043

what is lilo?How it is useful in linux?

HCL, SofTec,

3 12657

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 8602

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 10218

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

Sabre,

4 11615

what is the last file executed during the boot process?

iOPEX,

5 11335

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

2 6676

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 6684

How we can set the password length in linux?

Wipro,

2 7754

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 6770

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

2690

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

Mind Tree,

1 5114

How did you do the Health check in Linux?

Mind Tree,

1 7595

In Linux how you set time a limit on quota?

Mind Tree,

1 6812

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Un-Answered Questions { Linux Commands }

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

2690

How do I open a text file in cmd?

1026

How do makefiles work?

1062

What are the basic commands in command prompt?

1137

What is gnu in linux?

1048

What are linux commands useful?

1059

What is bc command in unix?

1053

What is du -s * | sort -k1,1rn | head command used for?

918

What are the commands used in command prompt?

1008

Which command is used to see the online manual?

1095

What are commands in grammar?

1076

How do I start ms dos?

941

What does mkdir do in linux?

1028

What is Data Command?

1190

Which Command used to lock user password in Linux?

1073

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