Difference between revisions of "Useradd"
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↑ 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
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{{lowercase}} | {{lowercase}} | ||
| − | <code>useradd</code><ref>https://linux.die.net/man/8/useradd</ref> - create a new user or update default new user information | + | <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]) |
| − | |||
| − | useradd -m YOUR_USERNAME -s /bin/[[bash]] | + | [[useradd -m]] YOUR_USERNAME [[-s]] [[/bin/]][[bash]] |
| − | -m --create-home | + | -m, --create-home |
| − | + | <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: | ||
| − | |||
| − | |||
| − | |||
| − | # Create user and add to sudo group | + | #!/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 | ||
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| − | |||
| − | |||
| − | |||
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:<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. | + | 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> | ||
| − | * [[Cisco IOS]]: [[username]] | + | * [[Cisco IOS]]: <code>[[username]]</code> |
| − | |||
* [[FreeIPA]]: <code>[[ipa user-add]]</code> | * [[FreeIPA]]: <code>[[ipa user-add]]</code> | ||
| − | * [[macOS]]: <code>[[ | + | * [[macOS]]: |
| + | ** <code>[[sysadminctl -addUser]] USERNAME</code> | ||
| + | ** <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> | ||
| + | * <code>[[CREATE ROLE]]</code> | ||
| + | * <code>[[groupadd]]</code> | ||
| + | * [[aws iam create-user]] | ||
| + | * [[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> | ||
| + | |||
| + | == 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}} | ||
| − | |||
| − | |||
* <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 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
Contents
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 loginpasswd -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]
jailkit,ChrootDirectorypasswduserdel,usermodadduser(BusyBox)groups,chgrp- Cisco IOS:
username - FreeIPA:
ipa user-add - macOS:
sysadminctl -addUser USERNAMEdscl . -create /Users/USERNAME_HERE
~/.ssh/- Cisco IOS: Associate a user with default higher privileges:
username CREATE ROLEgroupadd- aws iam create-user
- AWS:
aws iam create-role aws_iam_userKubernetes services accounts: kind: ServiceAccountkubectl create clusterrolebinding ops-user-cluster-admin-binding --clusterrole=cluster-admin --user=ops-user
Activities[edit]
See also[edit]
- macOS:
sysadminctl sudo,id,visudo,useradd,userdel,usermod,groups,passwd,chown,chmod,chgrp,groupadd,groupdel, Passwordless sudo, passwd (package),sudo --helpgroupsoridcommands to list groups of a user. sudousermod -a -G root USERNAMEuseradd, adduser(BusyBox),usermod, groupmod,userdel,groupadd,dscl,/Users/, groups, id
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