-s |
the login shell for the new user account
# useradd -s /sbin/nologin user
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-d |
home directory for the new user account
# useradd -d /home/user user
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-g |
force use GROUP for the new user account
# useradd -g group user
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-e |
set account expiration date to EXPIRE_DATE
# useradd -e 20081231 user
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-u |
force use the UID for the new user account
# useradd -u 550 user
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-m |
create home directory for the new user account
# useradd -m user
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-M |
do not create user's home directory(overrides /etc/login.defs)
# useradd -M user
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