Technical data

Library Functions
57
free_barrier free barrier
fseek reposition a file on a logical unit
fstat get file status
ftell reposition a file on a logical unit
gerror get system error messages
getarg return command line arguments
getc get a character from a logical unit
getcwd get pathname of current working directory
getdents read directory entries
getegid get effective group ID
gethostid get unique identifier of current host
getenv get value of environment variables
geteuid get effective user ID
getgid get user or group ID of the caller
gethostname get current host ID
getlog get user’s login name
getpgrp get process group ID
getpid get process ID
getppid get parent process ID
getsockopt get options on sockets
getuid get user or group ID of caller
gmtime return system time
iargc return command line arguments
idate return date or time in numerical form
Table 4-1
(continued) Summary of System Interface Library Routines
Function Purpose