Describe the UNIX system calls for Input-Output

Question

Describe the UNIX system calls for I/O?

Answer 1

open(pathname,flag,mode) – open a file
creat(pathname,mode) - create a file
close(filedes) - close an open file
read(filedes,buffer,bytes) - read data from an open file
write(filedes,buffer,bytes) - write data to an open file
lseek(filedes,offset,from) - position an open file
dup(filedes) - duplicate an accessible file descriptor
dup2(oldfd,newfd) - duplicate to a desired file descriptor
fcntl(filedes,cmd,arg) - alter properties of an open file
ioctl(filedes,request,arg) - alter the behavior of an open file