| 38.1 POSIX Interface Conventions | | Conventions employed by the POSIX interface. |
| 38.2 Ports and File Descriptors | | Scheme "ports" and Unix file descriptors
have different representations. |
| 38.3 File System | | stat, chown, chmod, etc. |
| 38.4 User Information | | Retrieving a user's GECOS (/etc/passwd) entry. |
| 38.5 Time | | gettimeofday, localtime, strftime, etc. |
| 38.6 Runtime Environment | | Accessing and modifying Guile's environment. |
| 38.7 Processes | | getuid, getpid, etc. |
| 38.8 Signals | | sigaction, kill, pause, alarm, setitimer, etc. |
| 38.9 Terminals and Ptys | | ttyname, tcsetpgrp, etc. |
| 38.10 Pipes | | Communicating data between processes. |
| 38.11 Networking | | gethostbyaddr, getnetent, socket, bind, listen. |
| 38.12 System Identification | | Obtaining information about the system. |
| 38.13 Locales | | setlocale, etc. |
| 38.14 Encryption | | |
