# Cheatsheet & Examples: useradd

## Create a Regular User Account

Example Usage:
`useradd john`

What it does:
Creates a new user account with default settings, including a home directory and default shell.

Command-line Arguments Explained:
- `-m`: Creates the user's home directory if it doesn't exist.
- `-s`: Sets the default shell for the new user.
- `-c`: Adds a comment field for the user's information.

## Create a User with a Specific Shell

Example Usage:
`useradd -s /bin/zsh john`

What it does:
Creates a new user account with the specified shell (e.g., Zsh).

Command-line Arguments Explained:
- `-s`: Specifies the shell path (e.g., `/bin/zsh`).

## Create a User with a Specific Shell and Home Directory

Example Usage:
`useradd -s /usr/bin/irbash -m john`

What it does:
Creates a new user account with a custom shell and a home directory.

Command-line Arguments Explained:
- `-s`: Specifies the shell path (e.g., `/usr/bin/irbash`).
- `-m`: Creates the home directory if it doesn't exist.

## Add a User with a Comment

Example Usage:
`useradd -c "Custom User" john`

What it does:
Creates a new user account with a custom comment field.

Command-line Arguments Explained:
- `-c`: Adds a comment field for the user.

## Set Expiration Date for a User

Example Usage:
`useradd -e 2025 john`

What it does:
Sets the expiration date for the user account.

Command-line Arguments Explained:
- `-e`: Sets the expiration date for the user account (format: `YYYY-MM-DD`).

## Create a User with a Password

Example Usage:
`useradd -p <password> john`

What it does:
Creates a new user account with a specified password (note: `-p` is for existing users).

Command-line Arguments Explained:
- `-p`: Sets the password for the user account.