- Configuration and Administration
- Daemons
- Init and Run Levels
- Scripting and Automation
- Users and Groups
| - Heterogenous Environments
- Interacting with Windows
- X Window System
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- Installation
- Booting and Multi-boot
- Disk Partitioning, Filesystems, and Quotas
- Hardware, Peripherals, and RAID
- Setup Issues
| - Kernel Customization
- Configuration
- Installation
- Patching and Compilation
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- Managing Applications
- Compilation and Installation
- Licensing Issues
- Troubleshooting
| - Networking
- Domain Name Service
- Internetworking
- Mail, ssh, FTP, and Other Network Services
- NFS and NIS
- Remote Printing
- Samba
- Web Serving and Proxying
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- Performance and Accounting
- Identifying Bottlenecks
- Login Accounting
- Process Accounting
| - Security
- Authentication
- Host-based Security
- Netfilter
- Network-based Security
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