Interview-Questions-2
What is the use of umask
What is grub and lilo
How to create partitions in linux
Tell me the steps to reduce the partition size in LVM
What is difference between capital “L” and small “l” in lvextend command
What filesystem is used to access remote filesystem
How to create swap partition and how to check swap partition size?
What is target and runlevels in Linux
How to delete line in vim
How to copy files across the system?
Explain FHS (Filesystem Hierarchy Standard)
How to check free memory?
Difference between du and df command
what is inode
Inspite of free space available in partition unable to create file what could be the reason?
What is ACL, How to set ACL & How to remove ACL
What is SUID, How to set SUID & How to remove SUID
What is SGID, How to set SGID &How to remove SGID
What is Sticky Bit How to set Sticky bit & How to remove Stickybit (/tmp, /usr/bin/passwd)
What is Chattr command, how to set chattr and How to remove chattr
difference between symlink and hardlink
How to create symlink and hardlink
As a Linux admin explain you daily routines
How to check listen ports(UDP & TCP)
How to check default target(runleve)
How to check size of directory
Do you have any idea about Patching
How to check all installed packages
Have you done patching in your organization if yes, please explain
How to rollback to previous state through yum
What operating system is your organization is using
What kernel version you are working
Command to check hardware related information in Linux?
Difference between cron and anacron
Fields of /etc/fstab
Where cron logs are stored?
Difference between /etc/fstab and /etc/mtab
What is the use of UUID & How to check UUID
How to scan new lun in Linux without rebooting
How to deny cron for particular user?
Difference between find and locate command?
How to check load average and explain three values in load average?
How to check how many cpu are there in server?
If server is in HUNG state what would you do?
What is the use of SUDO
How to start service automatically when server reboot
Configuration file of sudo & what are three ALL in SUDO?
Why XFS cannot be reduced?
how to archive, compress & extract the files using tar
Explain top command output?