| ABI | Application Binary Interface | 
| ALFS | Automated Linux From Scratch | 
| API | Application Programming Interface | 
| ASCII | American Standard Code for Information Interchange | 
| BIOS | Basic Input/Output System | 
| BLFS | Beyond Linux From Scratch | 
| BSD | Berkeley Software Distribution | 
| chroot | change root | 
| CMOS | Complementary Metal Oxide Semiconductor | 
| COS | Class Of Service | 
| CPU | Central Processing Unit | 
| CRC | Cyclic Redundancy Check | 
| CVS | Concurrent Versions System | 
| DHCP | Dynamic Host Configuration Protocol | 
| DNS | Domain Name Service | 
| EGA | Enhanced Graphics Adapter | 
| ELF | Executable and Linkable Format | 
| EOF | End of File | 
| EQN | equation | 
| ext2 | second extended file system | 
| ext3 | third extended file system | 
| ext4 | fourth extended file system | 
| FAQ | Frequently Asked Questions | 
| FHS | Filesystem Hierarchy Standard | 
| FIFO | First-In, First Out | 
| FQDN | Fully Qualified Domain Name | 
| FTP | File Transfer Protocol | 
| GB | Gigabytes | 
| GCC | GNU Compiler Collection | 
| GID | Group Identifier | 
| GMT | Greenwich Mean Time | 
| HTML | Hypertext Markup Language | 
| IDE | Integrated Drive Electronics | 
| IEEE | Institute of Electrical and Electronic Engineers | 
| IO | Input/Output | 
| IP | Internet Protocol | 
| IPC | Inter-Process Communication | 
| IRC | Internet Relay Chat | 
| ISO | International Organization for Standardization | 
| ISP | Internet Service Provider | 
| KB | Kilobytes | 
| LED | Light Emitting Diode | 
| LFS | Linux From Scratch | 
| LSB | Linux Standard Base | 
| MB | Megabytes | 
| MBR | Master Boot Record | 
| MD5 | Message Digest 5 | 
| NIC | Network Interface Card | 
| NLS | Native Language Support | 
| NNTP | Network News Transport Protocol | 
| NPTL | Native POSIX Threading Library | 
| OSS | Open Sound System | 
| PCH | Pre-Compiled Headers | 
| PCRE | Perl Compatible Regular Expression | 
| PID | Process Identifier | 
| PTY | pseudo terminal | 
| QOS | Quality Of Service | 
| RAM | Random Access Memory | 
| RPC | Remote Procedure Call | 
| RTC | Real Time Clock | 
| SBU | Standard Build Unit | 
| SCO | The Santa Cruz Operation | 
| SHA1 | Secure-Hash Algorithm 1 | 
| TLDP | The Linux Documentation Project | 
| TFTP | Trivial File Transfer Protocol | 
| TLS | Thread-Local Storage | 
| UID | User Identifier | 
| umask | user file-creation mask | 
| USB | Universal Serial Bus | 
| UTC | Coordinated Universal Time | 
| UUID | Universally Unique Identifier | 
| VC | Virtual Console | 
| VGA | Video Graphics Array | 
| VT | Virtual Terminal |