Linux user management commands create, modify, and delete user accounts and groups. Similarly, these commands are used to manage user account properties such as login shells, primary groups, and passwords.
This article describes important Linux commands that you must know as a system or database administrator.
Here is the full article link: https://www.support.dbagenesis.com/post/important-linux-commands
Linux Training For Beginners | Linux Administration Tutorial | Introduction T...Edureka!
This Linux training will take you one step closer to becoming a Linux administrator. The most common and important tasks that a Linux admin is responsible for, is covered in this Linux training video. Below are the topics covered in this tutorial:
1) Linux File Permissions
2) ACLs (Access Control Lists)
3) Shell Scripting
4) Patching In Linux
5) Networking In Linux:-
a) SSH For Remote Host Access
b) SFTP For Remote File Transfer
c) SCP For Remote Folder Transfer
Need help in a aspect of Linux System administration I am r.pdfABHISANJEET
Need help in a aspect of Linux System administration.
I am required to address Linux administration problems Linux administration problems via
executing appropriate system commands or via editing / modifying appropriate system files.
The solutions must be for RedHat7.x/CentOS7.x and higher version to be marked properly
by automatic marking system.
My solution will have to be uploaded in a single TEXT (26 line) file, each line of the file being
answer / solution to the task / question specified. Each line has to start with the task number
followed by system command (for the solutions requiring executing system commands) or line you
would enter into shell / appropriate configuration file content (for the solutions requiring
modification of appropriate system files) to achieve requested result.
For example, if task 3 was to provide command configuring network interface eth0 so that the IP
address was 192.168.0.2, network mask was 255.255.255.128 and the broadcast address was
192.168.0.255, you would enter the line as:
3. ifconfig eth0 192.168.0.2 netmask 255.255.255.128 broadcast 192.168.0.255
These are the 26 questions :
Thanks for the help in advance!
1. Which file you would use to redefine existing system variable PATH (provide full path)? 2. How
would you redefine the PATH variable to add path to /home/john/bin directory? 3. Which file you
would use to limit maximum number of logins for a user mariusz to 3 logins at a time (provide full
path)? 4. How would you modify the above file to achieve the result (please show how the line you
would add to the file would look like)? 5. You were requested to add to the system new user called
tatiana. You want to execute the command adding the user to the system so that default shell for
tatiana was be /bin/sh and her initial / primary group was students. How would the command look
like? 6. One of the system users asked you to change his login name from pm75 to mariusz. How
would you achieve this (provide appropriate command)?7. You want to add user mariusz to ACL
(Access Control List) of file /usr/share/ccsm so that this use had read permission (assume the user
does NOT belong to the file group nor he is the file owner). 8. You want to change current
permissions for file /usr/share/ccsm to rwxrr. How the command allowing you to achieve the goal
would look like. 9. You want to check your file system supports ACL. Which command would tell
you this? 10. You want to create in the current directory symbolic link ptr to file /usr/share/ccsm.
How the command allowing you to achieve this would look like? 11. One of the system users clare
forgot her password. How the command initialising her password change would look like? Assume
you execute the command as root (in other words: what command would root execute to change
clare's password). 12. Which file you would modify to add a new DNS server (provide full path)?
13. How would the entry (line) to the above file look like if the DNS server you wanted add to the
.
1 CMPS 12M Data Structures Lab Lab Assignment 1 .docxtarifarmarie
1
CMPS 12M
Data Structures Lab
Lab Assignment 1
The purpose of this assignment is threefold: (1) get a basic introduction to the Andrew File System (AFS)
which is the file system used by the ITS unix timshare, (2) learn how to create an executable jar file
containing a Java program, and (3) learn to automate compilation and other tasks using Makefiles.
AFS
Logon to your ITS unix timeshare account at unix.ucsc.edu. If you don't know how to do this, ask for
help at a lab session, or see Lab Assignment 1 from my CMPS 12A/L Spring 2018 webpage:
https://classes.soe.ucsc.edu/cmps012a/Spring18/lab1.pdf
Create a subdirectory within your home directory called cs12b in which you will keep all your work for
both CMPS 12B and CMPS 12M. Create a subdirectory within cs12b called lab1. From within lab1
create a subdirectory called private, then set access permissions on the new directory so that other users
cannot view its contents. Do all this (starting in your home directory) by typing the lines below. The unix
prompt is depicted here as %, although it may look different in your login session. The lines without the
unix prompt are the output of your typed commands.
% mkdir cs12b
% cd cs12b
% mkdir lab1
% cd lab1
% mkdir private
% fs setacl private system:authuser none
% fs listacl private
Access list for private is
Normal rights:
foobar rlidwka
Here foobar will be replaced by your own cruzid. The last line of output says that your access rights to
directory private are rlidwka which means: read, list, insert, delete, write, lock, and administer. In
other words you have all rights in this directory, while other users have none. If you are unfamiliar with
any unix command, you can view its manual page by typing: man <command name>. (Do not type the
angle brackets <>.) For instance man mkdir brings up the man pages for mkdir. Man pages can be very
cryptic, impenetrable even, especially for beginners, but it is best to get used to reading them as soon as
possible. Under AFS, fs denotes a file system command, setacl sets the access control list (ACL) for a
specific user or group of users, and listacl displays the access lists for a given directory. The command
% fs setacl <some directory> <some user> <some subset of rlidwka or all or none>
sets the access rights for a directory and a user. Note that setacl can be abbreviated as sa and listacl
can be abbreviated as la. For instance do la on your home directory:
% fs la ~
Access list for /afs/cats.ucsc.edu/users/a/foobar is
Normal rights:
foobar rlidwka
system:authuser l
http://its.ucsc.edu/unix-timeshare/index.html
https://classes.soe.ucsc.edu/cmps012a/Spring18/lab1.pdf
2
The path /afs/cats.ucsc.edu/users/a/foobar will be replaced by the full path to your home
directory, and your own username in place of foobar. Note that ~ (tilde) always refers to your home
directory, . (d.
Basic of and Unix and Command. More presentation you can find on www.scmGalaxy.com.
scmGalaxy.com is dedicated to software configuration, build and Release management. This covers CVS, VSS (Visual Source Safe),Perforce, SVN(Subversion) MKS Integrity, ClearCase,TFS,CM Synergy, Best Practices ,AnthillPro, Apache Ant, Maven, Bamboo, Cruise Control and many more tools.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
This article describes important Linux commands that you must know as a system or database administrator.
Here is the full article link: https://www.support.dbagenesis.com/post/important-linux-commands
Linux Training For Beginners | Linux Administration Tutorial | Introduction T...Edureka!
This Linux training will take you one step closer to becoming a Linux administrator. The most common and important tasks that a Linux admin is responsible for, is covered in this Linux training video. Below are the topics covered in this tutorial:
1) Linux File Permissions
2) ACLs (Access Control Lists)
3) Shell Scripting
4) Patching In Linux
5) Networking In Linux:-
a) SSH For Remote Host Access
b) SFTP For Remote File Transfer
c) SCP For Remote Folder Transfer
Need help in a aspect of Linux System administration I am r.pdfABHISANJEET
Need help in a aspect of Linux System administration.
I am required to address Linux administration problems Linux administration problems via
executing appropriate system commands or via editing / modifying appropriate system files.
The solutions must be for RedHat7.x/CentOS7.x and higher version to be marked properly
by automatic marking system.
My solution will have to be uploaded in a single TEXT (26 line) file, each line of the file being
answer / solution to the task / question specified. Each line has to start with the task number
followed by system command (for the solutions requiring executing system commands) or line you
would enter into shell / appropriate configuration file content (for the solutions requiring
modification of appropriate system files) to achieve requested result.
For example, if task 3 was to provide command configuring network interface eth0 so that the IP
address was 192.168.0.2, network mask was 255.255.255.128 and the broadcast address was
192.168.0.255, you would enter the line as:
3. ifconfig eth0 192.168.0.2 netmask 255.255.255.128 broadcast 192.168.0.255
These are the 26 questions :
Thanks for the help in advance!
1. Which file you would use to redefine existing system variable PATH (provide full path)? 2. How
would you redefine the PATH variable to add path to /home/john/bin directory? 3. Which file you
would use to limit maximum number of logins for a user mariusz to 3 logins at a time (provide full
path)? 4. How would you modify the above file to achieve the result (please show how the line you
would add to the file would look like)? 5. You were requested to add to the system new user called
tatiana. You want to execute the command adding the user to the system so that default shell for
tatiana was be /bin/sh and her initial / primary group was students. How would the command look
like? 6. One of the system users asked you to change his login name from pm75 to mariusz. How
would you achieve this (provide appropriate command)?7. You want to add user mariusz to ACL
(Access Control List) of file /usr/share/ccsm so that this use had read permission (assume the user
does NOT belong to the file group nor he is the file owner). 8. You want to change current
permissions for file /usr/share/ccsm to rwxrr. How the command allowing you to achieve the goal
would look like. 9. You want to check your file system supports ACL. Which command would tell
you this? 10. You want to create in the current directory symbolic link ptr to file /usr/share/ccsm.
How the command allowing you to achieve this would look like? 11. One of the system users clare
forgot her password. How the command initialising her password change would look like? Assume
you execute the command as root (in other words: what command would root execute to change
clare's password). 12. Which file you would modify to add a new DNS server (provide full path)?
13. How would the entry (line) to the above file look like if the DNS server you wanted add to the
.
1 CMPS 12M Data Structures Lab Lab Assignment 1 .docxtarifarmarie
1
CMPS 12M
Data Structures Lab
Lab Assignment 1
The purpose of this assignment is threefold: (1) get a basic introduction to the Andrew File System (AFS)
which is the file system used by the ITS unix timshare, (2) learn how to create an executable jar file
containing a Java program, and (3) learn to automate compilation and other tasks using Makefiles.
AFS
Logon to your ITS unix timeshare account at unix.ucsc.edu. If you don't know how to do this, ask for
help at a lab session, or see Lab Assignment 1 from my CMPS 12A/L Spring 2018 webpage:
https://classes.soe.ucsc.edu/cmps012a/Spring18/lab1.pdf
Create a subdirectory within your home directory called cs12b in which you will keep all your work for
both CMPS 12B and CMPS 12M. Create a subdirectory within cs12b called lab1. From within lab1
create a subdirectory called private, then set access permissions on the new directory so that other users
cannot view its contents. Do all this (starting in your home directory) by typing the lines below. The unix
prompt is depicted here as %, although it may look different in your login session. The lines without the
unix prompt are the output of your typed commands.
% mkdir cs12b
% cd cs12b
% mkdir lab1
% cd lab1
% mkdir private
% fs setacl private system:authuser none
% fs listacl private
Access list for private is
Normal rights:
foobar rlidwka
Here foobar will be replaced by your own cruzid. The last line of output says that your access rights to
directory private are rlidwka which means: read, list, insert, delete, write, lock, and administer. In
other words you have all rights in this directory, while other users have none. If you are unfamiliar with
any unix command, you can view its manual page by typing: man <command name>. (Do not type the
angle brackets <>.) For instance man mkdir brings up the man pages for mkdir. Man pages can be very
cryptic, impenetrable even, especially for beginners, but it is best to get used to reading them as soon as
possible. Under AFS, fs denotes a file system command, setacl sets the access control list (ACL) for a
specific user or group of users, and listacl displays the access lists for a given directory. The command
% fs setacl <some directory> <some user> <some subset of rlidwka or all or none>
sets the access rights for a directory and a user. Note that setacl can be abbreviated as sa and listacl
can be abbreviated as la. For instance do la on your home directory:
% fs la ~
Access list for /afs/cats.ucsc.edu/users/a/foobar is
Normal rights:
foobar rlidwka
system:authuser l
http://its.ucsc.edu/unix-timeshare/index.html
https://classes.soe.ucsc.edu/cmps012a/Spring18/lab1.pdf
2
The path /afs/cats.ucsc.edu/users/a/foobar will be replaced by the full path to your home
directory, and your own username in place of foobar. Note that ~ (tilde) always refers to your home
directory, . (d.
Basic of and Unix and Command. More presentation you can find on www.scmGalaxy.com.
scmGalaxy.com is dedicated to software configuration, build and Release management. This covers CVS, VSS (Visual Source Safe),Perforce, SVN(Subversion) MKS Integrity, ClearCase,TFS,CM Synergy, Best Practices ,AnthillPro, Apache Ant, Maven, Bamboo, Cruise Control and many more tools.
Similar to User Management Command Cheat Sheet.pdf (20)
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
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In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
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User Management Command Cheat Sheet.pdf
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Cheat Sheets Linux
User Management Command Cheat Sheet
Last updated on April 11th, 2023 - by John Gomez - Leave a Comment
Linux user management commands create, modify, and delete user accounts and
groups. Similarly, these commands are used to manage user account properties
such as login shells, primary groups, and passwords. User management
commands help system administrators control access to resources and manage
user permissions on Linux systems to ensure security and accessibility.
Command Description
useradd
By using this command, you can create a new user account on
the system.
usermod
This command is used to modify an existing user account, such
as changing the user's password or group membership.
userdel
This command is used to delete an existing user account from
the system.
passwd This command is used to change a user's password.
groupadd This command is used to create a new group on the system.
groupmod
This command is used to modify an existing group, such as
changing the group's name or membership.
groupdel
This command is used to delete an existing group from the
system.
Page 1 of 6
2. Command Description
id
This command is used to display information about a user or
group, including their user ID and group membership.
chown This command is used to change the owner of a 몭le or directory.
chgrp
This command is used to change the group ownership of a 몭le or
directory.
chmod
This command is used to change the permissions of a 몭le or
directory.
su
This command is used to switch to another user account or
become a superuser.
sudo
This command is used to execute a command with elevated
privileges.
whoami
This command is used to display the username of the current
user.
w
This command is used to display information about logged-in
users and their activity on the system.
몭nger [username]
Displays detailed information about a user, including their login
name, home directory, and shell.
last
Displays information about the last logged-in users on the
system.
who
Displays information about currently logged-in users in the
system.
adduser
[username]
Create a new user account with interactive prompts to enter user
details.
deluser [username] Deletes a user account and their home directory from the system.
newgrp
[groupname]
Change the user's primary group membership to a new session.
usermod -aG
[groupname]
[username]
Adds a user to an additional group.
chsh -s [shellpath]
[username]
Change the user's login shell.
chfn [username]
Change the user's full name and other details in the system
password 몭le.
Page 2 of 6
3. Command Description
Comment *
Leave a Reply
Your email address will not be published. Required 몭elds are marked *
visudo
Edit the sudo con몭guration 몭le, which controls which users can
execute commands with elevated privileges.
About John Gomez
John Britto Founder & Cheif-Editor @LinuxTeck. A Computer Geek and Linux
Intellectual having more than 10+ years of experience in Linux and Open Source
technologies.
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