The ________ command in Linux allows you to enforce a user to change their password upon the next login.
- passwd
- chsh
- chfn
- usermod
The "passwd" command in Linux allows you to enforce a user to change their password upon the next login. This is often used for security reasons, such as when a user's password has expired.
The _________ utility is used to create, grow, shrink, and repair ext2, ext3, and ext4 file systems.
- resize2fs
- mkfs
- df
- lsblk
The correct option is resize2fs. The resize2fs utility is used to resize (grow or shrink) ext2, ext3, and ext4 file systems. It allows you to adjust the size of the file system to match the size of the underlying disk or partition. This is a crucial tool for managing file system sizes in Linux.
In the context of containers, what does the acronym "OCI" stand for?
- Open Container Initiative
- Open Container Image
- Overarching Container Integration
- Operating Container Infrastructure
In the context of containers, "OCI" stands for the "Open Container Initiative." OCI is a standardized and open industry effort that defines container specifications and runtime standards, ensuring compatibility and portability between different container runtimes.
You are setting up a new server and need to ensure that only specific users can SSH into the machine. Which configuration file would you modify to achieve this?
- /etc/ssh/sshd_config
- /etc/hosts.allow
- /etc/ssh/authorized_keys
- /etc/passwd
To restrict SSH access to specific users, you would modify the /etc/ssh/sshd_config file. This file contains the configuration options for the SSH server, including settings related to user access, authentication, and permissions.