Managing a Linux system can be challenging, especially if you’re not familiar with the tools available. In this article, we’ll explore two essential commands, lslogins and lsmod, that can help you gain insights into user accounts and kernel modules in Linux.
What are lslogins and lsmod?
lslogins: User Account Information
The lslogins command is designed to provide detailed information about user accounts on your system. It gathers data from /etc/passwd, /etc/shadow, and system logs to present it in an easy-to-read format. Use lslogins to monitor last logins, view user group lists, or even check account status.
Example Usage:
- Display all user accounts:
htmllslogins - Display only non-system user accounts:
htmllslogins -u
lsmod: Monitoring Kernel Modules
The Linux kernel is monolithic but allows for dynamic loading and unloading of modules. The lsmod command provides a list of currently loaded kernel modules, including details like module size and dependent kernel features.
Example Usage:
- Display all loaded kernel modules:
htmllsmod
For more detailed information, use modinfo with the module name:
modinfo <module_name>Why Use lslogins and lsmod?
- System Security: lslogins helps you detect suspicious activities on user accounts.
- Kernel Debugging: lsmod aids in identifying issues with hardware drivers.
FAQ
1. Are lslogins and lsmod only available on Fedora?
No, both commands are available on almost all Linux distributions, including Ubuntu, Debian, Arch Linux, and more.
2. What alternatives exist for monitoring kernel modules besides lsmod?
You can use the modinfo command or check kernel logs with dmesg.
3. How do I update util-linux if lslogins is not found?
Run the following command to update:
sudo apt update && sudo apt install util-linuxConclusion
By understanding how to use lslogins and lsmod, you can better manage your Linux system. Try these commands today and optimize how you monitor user accounts and kernel modules. Learn More About Linux.
