Devops QS Flashcards
(46 cards)
What is DEVOPS
DEVEOPS IS A SOFTWARE DEVOLOPMENT METHODOLOGY THAT COMBINES PROCESS AND TECHNOLOGY AND PROVIDES REALBILTY TO SOFTWARE DELIVERY
What is open source software?
open souce software is a software were the code is able to seen and is acessible to the publice where they can change and deliver it as they see fit
What are the differences between Linux vs Windows?
linux is a free open source software that is 4 times more efficient has more stability
windows is not free its less efficient and uses graphical use interface
Explain Linux file system hierarchy
its a reference to the linus directory structue where all the file and folders reside under the parent folder
What are the differences between CentOS and RedHat?
centosos is more stable operating system it does not have support
redhat less stable but it requires payment to be supported
What are the differences between CentOS 6 vs 7 vs 8?
centos 6 ,7, and 8 are the end of their life cycles. centos 6 used ext4 filesystem , centos 7 used ifs filesystem , centos 8 used
centos 9 is up to date
uses the xfs,btfs filesytem
Explain Linux File Permissions
is set of permissions that determine who are given to access system to be able to read write and execute file
What is CLI and GUI?
CLI is the command line interface which is used in linus operating system to have commands outputs
GUI is the graphical user interface which is used by windows
How do you create a directory in Linux?
you create directory in linux by using the mkdir command
how do you create an empty file in linus
create an empty file by using the touch command
how do you check the current working directory
you check by using the pwd command
if a user knows the command but does not know how to use it, how can she get help
you can get help by using the man command which stands for manual followed by the command it will give you a descriptive information on how to use it or you can use google
what does / represent
it represent the parent folder where all the files and folders are under
if a user need to read the content of the file on screen , and set the line numbers what command can he use
the read the content he or she can use the cat command with -n see the numbers with the information printed
If a user needs to find out the number of lines and words in a file, what command can he/she use?
he/she can use the wc command
On a file using “vi” command, how can a user search for a word?
you can use the slash followed by the word
How to set numbers, using “vi” command mode?
in vi command you first press the escape button for the command then type the colon then by set number
What command do you use to find a string in a file?
you can use the grep command
What command do you use to find a file?
you can use the find command
How to find a file in the system, owned by a specific user?
you use the find command follwed -user
How to delete 100 lines in a file, from cli?
to delete 100
you will use d#d which deletes multiple lines
What command would you use to copy specific columns from a file?
the command you would use the awk or the cut command
What is a Linux shell? What are the popular shells in Linux?
linux shell is program where input command gives the operating system to peform
some populare shells zsh bash shell ksh korn
What is the difference between ‘standard error’ and ‘standard output’?
‘standard output’ is the terminal screen where the response are shown from the command
standard error the default error output devicce which is used to write all system error messages
