1-999 is for system accounts and services.0 is reserved for root and assigned automatically.Sets the user's password (not recommended).Ĭreates a group with the same name as the user and adds the user to the group.Ĭreating new users in Linux does the following: ![]() Sets the time in days the account becomes inactive after a password expiry.Ä®stablishes the user's initial login group.Ĭopies files and directories into the user's home directory.Ĭreates a home directory for a user if it does not exist.Äoes not create a home directory (overrides system settings).Ĭombines with -u to allow duplicate UIDs. Sets a short description of the user, such as the full name or role.Äisplays the default values or changes them when combined with other options. Sets a default base directory for the system. Common options are in the table below: Option install4j generates launchers for your applications that are native on every supported platform: Windows executables are compiled with our exe4j technology, state-of-the-art Unix shell scripts are created for Unix platforms and application bundles blend in seamlessly on macOS. The useradd command comes with various options. Adding a new user requires sudo permissions to modify the files for storing user and group information. In addition, the command also creates a group for the new user. However, the provided rules are a good starting point for all systems to help avoid problems. Note: Debian follows a different set of rules for usernames. The regular expression for checking the username validity is: *
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