Basic Linux Interview Questions and Answers – Part II
Continuing the Interview Series, we are giving 10 Questions here, in this article. These questions and the questions in the future articles doesn’t necessarily means they were asked in any interview. We are presenting you an interactive learning platform through these kind of posts, which surely will be helpful.
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Q.1: Which command is used to record a user login session in a file?
Let’s record the user’s login session with script command as shown.
[[email protected] ~]# script my-session-record.txt Script started, file is my-session-record.txt
The content of log file ‘my-session-record.txt’ can be views as:
[[email protected] ~]# nano my-session-record.txt script started on Friday 22 November 2013 08:19:01 PM IST [[email protected] ~]# ls ^[[0m^[[01;34mBinary^[[0m ^[[01;34mDocuments^[[0m ^[[01;34mMusic^[[0m $ ^[[01;34mDesktop^[[0m ^[[01;34mDownloads^[[0m my-session-record.txt ^[[01;34$
Q.2: The kernel log message can be viewed using which of the following command?
- ls -i
- None of the above
[[email protected] ~]# dmesg Initializing cgroup subsys cpuset Initializing cgroup subsys cpu Linux version 2.6.32-279.el6.i686 (mock[email protected]) (gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) ) #1 SMP Fri Jun 22 10:59:55 UTC 2012 KERNEL supported cpus: Intel GenuineIntel AMD AuthenticAMD NSC Geode by NSC Cyrix CyrixInstead Centaur CentaurHauls Transmeta GenuineTMx86 Transmeta TransmetaCPU UMC UMC UMC UMC Disabled fast string operations BIOS-provided physical RAM map: ...
Q.3: Which command is used to display the release of Linux Kernel?
- uname -v
- uname -r
- uname -m
- uname -n
- uname -o
[[email protected] ~]# uname -r 2.6.32-279.el6.i686
Q.4: Which command is used to identify the types of file?
[[email protected] ~]# file wtop wtop: POSIX shell script text executable
Q.5: Which command locate the binary, source and man page of a command?
[[email protected] ~]# whereis /usr/bin/ftp ftp: /usr/bin/ftp /usr/share/man/man1/ftp.1.gz
Q.6: When a user login, which files are called for user profile, by default??
[[email protected] ~]# ls -al -rw-r--r--. 1 tecmint tecmint 176 May 11 2012 .bash_profile -rw-r--r--. 1 tecmint tecmint 124 May 11 2012 .bashrc
Q.7: The ‘resolv.conf’ file is a configuration file for?
[[email protected] ~]# cat /etc/resolv.conf nameserver 172.16.16.94
Q.8: Which command is used to create soft link of a file?
- ln -s
- link -soft
- None of the above
[[email protected] ~]# ln -s /etc/httpd/conf/httpd.conf httpd.original.conf
Q.9: The command ‘pwd’ is an alias of command ‘passwd’ in Linux?
[[email protected] ~]# pwd /home/tecmint
[[email protected] ~]# passwd Changing password for user root. New password: Retype new password:
Q.10: How will you check pci devices vendor and version on a Linux?
[[email protected] ~]# lspci 00:00.0 Host bridge: Intel Corporation 5000P Chipset Memory Controller Hub (rev b1) 00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 2-3 (rev b1) 00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 4-5 (rev b1) 00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 6-7 (rev b1) 00:08.0 System peripheral: Intel Corporation 5000 Series Chipset DMA Engine (rev b1) ...
That’s all for now. I hope these above questions might be very helpful to you. In our next weekend we again come-up with some new set of questions. Till then stay healthy, tuned and connected to Tecmint.