What file will temporarily prevent all users except root from logging into a system?

3 thoughts on “What file will temporarily prevent all users except root from logging into a system?”

1. /sbin/nologin is per-account set to a user in /etc/passwd

   https://man7.org/linux/man-pages/man8/nologin.8.html
   pam_nologin(8) PAM module usually prevents all non-root users
   from logging into the system. pam_nologin(8) functionality is
   controlled by /var/run/nologin or the /etc/nologin file

   Creating the /etc/nologin File
   Create this file to disallow user logins and notify users when a system will be unavailable for an extended period of time because of a system shutdown or routine maintenance.

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2. hi
   /etc/nologin to prevent all users excpt the root from loggin into the system.
   usermod -s /sbin/nologin username –> set the default shell for a specific user to nologin.

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3. hi
   /etc/nologin to prevent all users excpt the root from loggin into the system.
   usermod -s /sbin/nologin username –> set the default shell for a specific user to nologin.

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4. https://docs.oracle.com/cd/E19683-01/806-4078/6jd6cjs41/index.html

   How to Temporarily Disable User Logins
   Become superuser or assume an equivalent role.

   Create the /etc/nologin file by using an editor.

   # vi /etc/nologin
   Include a message about system availability.

   Close and save the file.

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5. yes u are right.
   /sbin/nologin or /usr/sbin/nologin is to block the login for a single user.
   /etc/nologin block all user except root.
   But this file must be created

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6. that’s not the correct answer! The file is /etc/nologin

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