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 11025

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 30139

what is lilo?How it is useful in linux?

HCL, SofTec,

3 12738

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 8728

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 10394

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

Sabre,

4 11756

what is the last file executed during the boot process?

iOPEX,

5 11473

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

2 6757

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 6755

How we can set the password length in linux?

Wipro,

2 7833

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 6824

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

2730

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

Mind Tree,

1 5182

How did you do the Health check in Linux?

Mind Tree,

1 7686

In Linux how you set time a limit on quota?

Mind Tree,

1 6866

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Un-Answered Questions { Linux Commands }

How is grep so fast?

1042

What does umask 022 mean?

1216

What is unix finger command?

1051

How do I check my cpu speed?

1100

Which command will show you free/used memory? Does free memory exist on linux?

1067

What are the 7 types of sentences?

1110

The command â€˜umask -Sâ€™

1060

How can you copy lines into the buffer in command mode?

1136

How do I stress test my cpu?

1050

Which are the linux directory commands?

1085

What is the difference between kill and kill in linux?

1362

What are the options of wc command?

1085

How do I check my system performance?

1072

What is SFC command?

1044

How to know linux os is 32 bit or 64 bit?

1053

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