man pages section 2: System Calls
    
R
 
 read from file - read ( Index Term Link )
  pread ( Index Term Link )
  readv ( Index Term Link )
 
 read the contents of a symbolic link - readlink ( Index Term Link )
 
 read/write file pointer
  move - lseek ( Index Term Link ) ( Index Term Link )
 
 readlink - read the contents of a symbolic link ( Index Term Link )
 
 read - read from file ( Index Term Link )
 
 real group ID, set - setregid() ( Index Term Link )
 
 real user ID, set - setreuid() ( Index Term Link )
 
 reboot system, - uadmin ( Index Term Link )
 
 remount root file system, - uadmin ( Index Term Link )
 
 rename - change the name of a file ( Index Term Link )
 
 resolve all symbolic links of a path name - resolvepath ( Index Term Link )
 
 resolvepath - resolve all symbolic links of a path name ( Index Term Link )
 
 rmdir - remove a directory ( Index Term Link )
 
 root directory, change - chroot ( Index Term Link )