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Chapter 4: System Functions and Subroutines
Table 4-1 summarizes the functions in the Fortran run-time library.
Table 4-1 Summary of System Interface Library Routines
Function Purpose
abort abnormal termination
access determine accessibility of a file
acct enable/disable process accounting
alarm execute a subroutine after a specified time
barrier perform barrier operations
blockproc block processes
brk change data segment space allocation
chdir change default directory
chmod change mode of a file
chown change owner
chroot change root directory for a command
close close a file descriptor
creat create or rewrite a file
ctime return system time
dtime return elapsed execution time
dup duplicate an open file descriptor
etime return elapsed execution time
exit terminate process with status
fcntl file control
fdate return date and time in an ASCII string
fgetc get a character from a logical unit
fork create a copy of this process
fputc write a character to a Fortran logical unit