- gethostname getlogin getlogin_r getpagesize getusershell setusershell
- endusershell group_member lchown link linkat lseek pipe pipe2 pread pwrite
- readlink readlinkat rmdir sleep symlink symlinkat ttyname_r unlink unlinkat
- usleep])
+ gethostname getlogin getlogin_r getpagesize
+ getusershell setusershell endusershell
+ group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
+ readlink readlinkat rmdir sethostname sleep symlink symlinkat ttyname_r
+ unlink unlinkat usleep])