Difference between revisions of "Useradd"

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{{lowercase}}
 
{{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
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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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* Man page: https://linux.die.net/man/8/useradd
 
  
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  useradd -m YOUR_USERNAME -s /bin/[[bash]]
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  [[useradd -m]] YOUR_USERNAME [[-s]] [[/bin/]][[bash]]
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         -m --create-home
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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 --[[uid]] #### --[[gid]] #### -s [[/bin/bash]] --create-home</code>
  
 +
<code>useradd -m YOUR_USERNAME -[[g]] your-group -s [[/bin/bash]] --create-home</code>
  
 +
[[-c]]
  
 
== Add user using [[Ansible]] ==
 
== Add user using [[Ansible]] ==
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== 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
 +
  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  
  
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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
  
  
−
After creating user you can copy ssh key using [[ssh|ssh-copy-id]] and modifying [[sudo]] for giving new user privileges.
+
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.
  
 
== useradd command ==
 
== useradd command ==
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You can also consider activating [[passwordless sudo]] for your accounts.
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You can also consider activating <code>[[passwordless sudo]]</code> for your accounts.
  
 
== Related commands ==
 
== Related commands ==
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* <code>[[adduser]]</code> ([[BusyBox]])
 
* <code>[[adduser]]</code> ([[BusyBox]])
 
* <code>[[groups]]</code>, <code>[[chgrp]]</code>
 
* <code>[[groups]]</code>, <code>[[chgrp]]</code>
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* [[Cisco IOS]]: [[username]]
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* [[Cisco IOS]]: <code>[[username]]</code>
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* [[Sftp configuration]]
 
 
* [[FreeIPA]]: <code>[[ipa user-add]]</code>
 
* [[FreeIPA]]: <code>[[ipa user-add]]</code>
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* [[macOS]]: <code>[[dscl . -create]] /Users/USERNAME_HERE</code>
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* [[macOS]]:  
 +
** <code>[[sysadminctl -addUser]] USERNAME</code>
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** <code>[[dscl . -create]] /Users/USERNAME_HERE</code>
  
 
* <code>[[~/.ssh/]]</code>
 
* <code>[[~/.ssh/]]</code>
 
* [[Cisco IOS]]: [[Associate a user with default higher privileges]]: <code>[[username]]</code>
 
* [[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>
 +
* <code>[[aws_iam_user]]</code>
 +
* <code>[[Kubernetes services accounts]]: [[kind: ServiceAccount]]</code>
 +
* <code>[[kubectl create clusterrolebinding]] ops-user-cluster-admin-binding --clusterrole=[[cluster-admin]] --user=ops-user</code>
 +
* <code>[[USER]]</code>
 +
 +
== Activities ==
 +
* [[Ansible]]: [[User ssh access]]
 +
* [[Sftp configuration]]
  
 
== See also ==
 
== See also ==
 
* [[macOS]]: <code>[[sysadminctl]]</code>
 
* [[macOS]]: <code>[[sysadminctl]]</code>
 
* {{Linux Commands privileges}}
 
* {{Linux Commands privileges}}
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* {{OpenSSH}}
 
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* [[Ansible]]: [[User ssh access]]
 
 
* <code>[[groups]]</code> or <code>[[id]]</code> commands to list groups of a user. sudo <code>usermod -a -G root USERNAME</code>
 
* <code>[[groups]]</code> or <code>[[id]]</code> commands to list groups of a user. sudo <code>usermod -a -G root USERNAME</code>
 +
* {{useradd}}
  
 
[[Category:Linux commands]]
 
[[Category:Linux commands]]

Latest revision as of 13:46, 8 November 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=354031"

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