$ curl cheat.sh/

# useradd
# Create a new user.

# Create new user:
useradd name

# Create new user with a default home directory:
useradd --create-home name

# Create new user with specified shell:
useradd --shell path/to/shell name

# Create new user belonging to additional groups (mind the lack of whitespace):
useradd --groups group1,group2 name

# Create new system user without a home directory:
useradd --no-create-home --system name

$

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