| AssignPipe | Create a set of pipe file handlers | 
| AssignStream | Assign stream for in and output to a program | 
| EpochToLocal |  | 
| EpochToUniversal |  | 
| FpExecL | Execute process (using argument list, environment) | 
| FpExecLE | Execute process (using argument list, environment) | 
| FpExecLP | Execute process (using argument list, environment; search path) | 
| FpExecLPE | Execute a program in the path, and pass it an environment | 
| FpExecV | Execute process | 
| FpExecVP | Execute process, search path | 
| FpExecVPE | Execute process, search path using environment | 
| fpFlock | Lock a file (advisory lock) | 
| fpfStatFS | Retrieve file system information. | 
| fpfsync | Flush cached data to disk | 
| fpgettimeofday | Return kernel time of day in GMT | 
| fpStatFS | Retrieve file system information. | 
| fpSystem | Execute and feed command to system shell | 
| FSearch | Search for file in search path. | 
| GetDomainName | Return current domain name | 
| GetHostName | Return host name | 
| GetLocalTimezone | Return local timezone information | 
| GetTimezoneFile | Return name of timezone information file | 
| Gettzdaylight |  | 
| GetTZInfo |  | 
| GetTZInfoEx |  | 
| Gettzname |  | 
| GetTzseconds |  | 
| GregorianToJulian |  | 
| JulianToGregorian |  | 
| LocalToEpoch |  | 
| PClose | Close file opened with POpen | 
| POpen | Pipe file to standard input/output of program | 
| ReadTimezoneFile | Read the timezone file and initialize time routines | 
| RefreshTZInfo |  | 
| ReReadLocalTime | Re-Read the local time files. | 
| SeekDir | Seek to position in directory | 
| SetTZInfo |  | 
| TellDir | Return current location in a directory | 
| UniversalToEpoch |  | 
| WaitProcess | Wait for process to terminate. | 
| WIFSTOPPED | Check whether the process is currently stopped. | 
| W_EXITCODE | Construct an exit status based on an return code and signal. | 
| W_STOPCODE | Construct an exit status based on a signal. |