Difference between revisions of "Useradd"

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(Created page with " == Add user using Ansible == <pre> - user: name: YOUR_USER_NAME shell: /bin/bash groups: sudo append: yes password_lock: yes </pre> == Ad...")
 
 
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{{lowercase}}
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<code>useradd</code><ref>https://linux.die.net/man/8/useradd</ref> - create a new user or update default new user information ([https://linux.die.net/man/8/useradd man])
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[[useradd -m]] YOUR_USERNAME [[-s]] [[/bin/]][[bash]]
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        -m, --create-home
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<code>useradd -m YOUR_USERNAME --[[uid]] #### --[[gid]] #### -s [[/bin/bash]] --create-home</code>
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<code>useradd -m YOUR_USERNAME -[[g]] your-group -s [[/bin/bash]] --create-home</code>
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[[-c]]
  
 
== Add user using [[Ansible]] ==
 
== Add user using [[Ansible]] ==
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<pre>
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   - user:
 
   - user:
 
       name: YOUR_USER_NAME
 
       name: YOUR_USER_NAME
 
       shell: /bin/bash
 
       shell: /bin/bash
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       groups: sudo
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       [[groups]]: sudo
 
       append: yes
 
       append: yes
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       password_lock: yes
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       [[password_lock]]: yes
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</pre>
 
  
 
== Add user using bash ==
 
== Add user using bash ==
 
Example creating a user in [[Ubuntu]] with bash shell, ~/.ssh directory and part of group [[sudo]] using <code>useradd</code><ref>http://man7.org/linux/man-pages/man8/useradd.8.html</ref> command:
 
Example creating a user in [[Ubuntu]] with bash shell, ~/.ssh directory and part of group [[sudo]] using <code>useradd</code><ref>http://man7.org/linux/man-pages/man8/useradd.8.html</ref> command:
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<pre>
 
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#!/bin/bash
 
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USERNAME="Your_user_name"
 
  
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# Create user and add to sudo group
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#!/bin/bash
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  useradd  --create-home -s /bin/bash $USERNAME
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USERNAME="Your_user_name"
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  sudo usermod -aG sudo $USERNAME
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# Create user and add to sudo group
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  useradd  --create-home -s /bin/bash $USERNAME
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  sudo [[usermod]] -aG sudo $USERNAME
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#Create ssh directory and lock password login
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  mkdir /home/$USERNAME /home/$USERNAME/.ssh
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  chown $USERNAME.$USERNAME /home/$USERNAME /home/$USERNAME/.ssh
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  [[passwd -l]] $USERNAME  
  
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#Create ssh directory and lock password login
 
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  mkdir /home/$USERNAME /home/$USERNAME/.ssh
 
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  chown $USERNAME.$USERNAME /home/$USERNAME /home/$USERNAME/.ssh
 
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  passwd -l $USERNAME
 
  
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</pre>
 
 
:<code>[[passwd]] -l $USERNAME</code> // for disabling password login
 
:<code>[[passwd]] -l $USERNAME</code> // for disabling password login
 
:<code>passwd -u $USERNAME</code> // will unlock account if needed
 
:<code>passwd -u $USERNAME</code> // will unlock account if needed
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<pre>
 
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passwd -u $USERNAME
 
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passwd: password expiry information changed.
 
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</pre>
 
  
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After creating user you can copy ssh key using [[ssh|ssh-copy-id]] and modifying [[sudo]] for giving new user privileges.
 
  
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After creating user you can copy ssh key using <code>[[ssh|ssh-copy-id]]</code> and modifying <code>[[sudo]]</code> for giving new user privileges.
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 +
== useradd command ==
 
<code>useradd</code><ref>http://man7.org/linux/man-pages/man8/useradd.8.html</ref> command.
 
<code>useradd</code><ref>http://man7.org/linux/man-pages/man8/useradd.8.html</ref> command.
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:-m --create-home
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-m --create-home
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:-s --shell
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-M, --no-create-home
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-N, --no-user-group
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-s --shell
  
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<code>useradd -m YOUR_USERNAME -s /bin/bash</code>
  
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You can also consider activating [[Sudo/passwordless sudo|passwordless sudo]] for your accounts.
 
  
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== See also ==
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You can also consider activating <code>[[passwordless sudo]]</code> for your accounts.
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* [[macOS]]: [[MacOS/Create a user from command line|sysadminctl]]
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* [[sudo]]
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== Related commands ==
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* [[OpenSSH]]
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* <code>[[jailkit]]</code>, <code>[[ChrootDirectory]]</code>
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* [[Ansible]]: [[DevOps/Ansible/User ssh access]]
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* <code>[[passwd]]</code>
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* [[userdel]]
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* <code>[[userdel]]</code>, <code>[[usermod]]</code>
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* [[usermod]]  
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* <code>[[adduser]]</code> ([[BusyBox]])
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* <code>[[groups]]</code> or <code>[[id]]</code> commands to list groups of a user. sudo usermod -a -G root USERNAME
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* <code>[[groups]]</code>, <code>[[chgrp]]</code>
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* [[chmod]]
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* [[Cisco IOS]]: <code>[[username]]</code>
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* [[FreeIPA]]: <code>[[ipa user-add]]</code>
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* [[macOS]]:
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** <code>[[sysadminctl -addUser]] USERNAME</code>
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** <code>[[dscl . -create]] /Users/USERNAME_HERE</code>
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* <code>[[~/.ssh/]]</code>
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* [[Cisco IOS]]: [[Associate a user with default higher privileges]]: <code>[[username]]</code>
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* <code>[[CREATE ROLE]]</code>
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* <code>[[groupadd]]</code>
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* [[aws iam create-user]]
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* [[AWS]]: <code>[[aws iam create-role]]</code>
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* <code>[[aws_iam_user]]</code>
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* <code>[[Kubernetes services accounts]]: [[kind: ServiceAccount]]</code>
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* <code>[[kubectl create clusterrolebinding]] ops-user-cluster-admin-binding --clusterrole=[[cluster-admin]] --user=ops-user</code>
  
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== Activities ==
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* [[Ansible]]: [[User ssh access]]
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* [[Sftp configuration]]
  
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== See also ==
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* [[macOS]]: <code>[[sysadminctl]]</code>
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* {{Linux Commands privileges}}
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* <code>[[groups]]</code> or <code>[[id]]</code> commands to list groups of a user. sudo <code>usermod -a -G root USERNAME</code>
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* {{useradd}}
  
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[[Category:Linux]]
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[[Category:Linux commands]]

Latest revision as of 09:23, 24 January 2024

useradd[1] - create a new user or update default new user information (man) 

useradd -m YOUR_USERNAME -s /bin/bash
        -m, --create-home

useradd -m YOUR_USERNAME --uid #### --gid #### -s /bin/bash --create-home

useradd -m YOUR_USERNAME -g your-group -s /bin/bash --create-home 

-c

Add user using Ansible[edit]

 - user:
     name: YOUR_USER_NAME
     shell: /bin/bash
     groups: sudo
     append: yes
     password_lock: yes

Add user using bash[edit]

Example creating a user in Ubuntu with bash shell, ~/.ssh directory and part of group sudo using useradd[2] command: 

#!/bin/bash
USERNAME="Your_user_name"

# Create user and add to sudo group
  useradd  --create-home -s /bin/bash $USERNAME
  sudo usermod -aG sudo $USERNAME 

#Create ssh directory and lock password login
  mkdir /home/$USERNAME /home/$USERNAME/.ssh
  chown $USERNAME.$USERNAME /home/$USERNAME /home/$USERNAME/.ssh 
  passwd -l $USERNAME


passwd -l $USERNAME // for disabling password login
passwd -u $USERNAME // will unlock account if needed


After creating user you can copy ssh key using ssh-copy-id and modifying sudo for giving new user privileges.

useradd command[edit]

useradd[3] command. 

-m --create-home
-M, --no-create-home
-N, --no-user-group
-s --shell

useradd -m YOUR_USERNAME -s /bin/bash


You can also consider activating passwordless sudo for your accounts.

Related commands[edit]

Activities[edit]

See also[edit]

  • ↑ https://linux.die.net/man/8/useradd
  • ↑ http://man7.org/linux/man-pages/man8/useradd.8.html
  • ↑ http://man7.org/linux/man-pages/man8/useradd.8.html
    • Retrieved from "https://www.wikieduonline.com/index.php?title=Useradd&oldid=292538"

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