# 
# 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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