Linux Create User Account
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Q. How do I create a new Linux user account ? How do update or modify default Linux new user information? Using the command prompt (shell) tools, how do I add a user to the system? What are command line options for adding a user?
A. To create a new user account under any Linux distribution use command called useradd. The system administrator is responsible for creating account. Login as root user (or use sudo command).
useradd command syntax
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- useradd [options] username
useradd [options] username
Depending on command line options, the useradd command will update system files (/etc/passwd and /etc/shadow file with password) and may also create the new user's home directory and copy initial files.
Linux add a new user called rakhi
Type the command as follows:
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- useradd rakhi
useradd rakhiSet a password for rakhi:
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- passwd rakhi
passwd rakhiWithout password user account will be in locked status. To unlock the account, you need to use above passwd command. Use passwd command to assign a password and set password aging guidelines.
Set account disable date
You can set date for the account to be disabled in the format YYYY-MM-DD with -e option while creating account itself:
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- useradd -e yyyy-mm-dd username
- useradd -e 2008-12-31 jerry
useradd -e yyyy-mm-dd username
useradd -e 2008-12-31 jerry
Set default password expiry
The -f days option set number of days after the password expires until the account is disabled. (If 0 is specified, the account is disabled immediately after the password expires. If -1 is specified, the account is not be disabled after the password expires.)
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