Linux Interview Questions: =========================== Linux Interview questions : ============================= 1).how much u can rate of yourself into linux os? 2). How to search error into multiple sub directories? grep -r "ERROR" /path/to/logs/ 3).if you want to search the multiple pattern .just error logs . And failed logs and critical logs also and multiple pattern u can use it ? So how u are goig to do it ? egrep -“E ERROR|FAILED|CRITICAL" /var/log/syslog 4).if you want to career the partition even u don’t’ have any space iisue and permiosnisuse and disks space suite ? So how do to it ? 5).what is the inode into linux os ? 6).what is the softlink and hardlink into linux os ? 7).how would different from the cp and hardlink command into linux os ? 8).find the logs for 3 days back . Want to list out the files and delete those file into linux os > So how to do it ? 9).what is the called as the Curley brasis> And semicolon? This is the placeholder You worked with lvm > How to extend the lvm into linux os > For extending the lvm do u need downtime ? For rescuing the lvm we need a downtime Logical extend into lvm ? Check the volume group ? So how to check vis ? If you want to extend the volume group ? Then what else u have to do ? Can we extend the volume group with out using the physical volume group into linux os ? How to reduce the logical volume into linux os ? Have you mount any directory > Target busy error > what could be the reason into it ? Ueser is not able to login ? So how to do truobelshoting into it > /bin/bash /sbin/nologin = what does it mean> “/bin/bash allows login, /sbin/nologin prevents login.” ✅ ======== User is not bale to sudo ? She w do the troubleshoot into it ? Wheel command where its located What is wheel? * wheel is a special user group on Linux/Unix systems. * Users in the wheel group can use sudo to execute administrative commands. * Mainly used to control who can become root. 2️⃣ Where is it located? * Group definition file:



/etc/group

 User not bale to login in your server ? So how to do the trolls How to check list of avilible interfaces Connection show: