Standard input is empty

lrwxrwxrwx  1 root root      14 Jan  7 12:14 pidof -> /sbin/killall5
-rwxr-xr-x  1 root root   91988 Jan  2 19:23 ps
-rwxr-xr-x  1 root root   30376 Jan  2 19:23 pwd
lrwxrwxrwx  1 root root       4 Jan  7 12:14 rbash -> bash
-rwxr-xr-x  1 root root   38536 Jan  2 19:23 readlink
-rwxr-xr-x  1 root root   63176 Jan  2 19:23 rm
-rwxr-xr-x  1 root root   42632 Jan  2 19:23 rmdir
-rwxr-xr-x  1 root root   18248 Jan  2 19:23 run-parts
-rwxr-xr-x  1 root root   72012 Jan  2 19:23 sed
-rwxr-xr-x  1 root root   34924 Jan  2 19:23 setfacl
lrwxrwxrwx  1 root root       4 Jan  7 12:14 sh -> dash
lrwxrwxrwx  1 root root       4 Jan  7 12:14 sh.distrib -> dash
-rwxr-xr-x  1 root root   30312 Jan  2 19:23 sleep
-rwxr-xr-x  1 root root   83040 Sep  5  2014 ss
-rwxr-xr-x  1 root root   63144 Jan  2 19:23 stty
-rwxr-xr-x  1 root root   38868 Jan  2 19:23 su
-rwxr-xr-x  1 root root   26216 Jan  2 19:23 sync
-rwxr-xr-x  1 root root  587316 Jan  2 19:23 systemctl
lrwxrwxrwx  1 root root      20 Jan  7 12:14 systemd -> /lib/systemd/systemd
-rwxr-xr-x  1 root root   38432 Jan  2 19:23 systemd-ask-password
-rwxr-xr-x  1 root root   30220 Jan  2 19:23 systemd-escape
-rwxr-xr-x  1 root root  251416 Jan  2 19:23 systemd-inhibit
-rwxr-xr-x  1 root root   30224 Jan  2 19:23 systemd-machine-id-setup
-rwxr-xr-x  1 root root   26124 Jan  2 19:23 systemd-notify
-rwxr-xr-x  1 root root   87572 Jan  2 19:23 systemd-tmpfiles
-rwxr-xr-x  1 root root   63000 Jan  2 19:23 systemd-tty-ask-password-agent
-rwxr-xr-x  1 root root   22024 Jan  2 19:23 tailf
-rwxr-xr-x  1 root root  388536 Jan  2 19:23 tar
-rwxr-xr-x  1 root root    9608 Jan  2 19:23 tempfile
-rwxr-xr-x  1 root root   59112 Jan  2 19:23 touch
-rwxr-xr-x  1 root root   26216 Jan  2 19:23 true
-rwxr-xr-x  1 root root  312860 Jan  2 19:23 udevadm
-rwxr-xr-x  1 root root   26344 Jan  2 19:23 umount
-rwxr-xr-x  1 root root   30312 Jan  2 19:23 uname
-rwxr-xr-x  1 root root    2301 Jan  2 19:23 uncompress
-rwxr-xr-x  1 root root  121032 Jan  2 19:23 vdir
-rwxr-xr-x  1 root root   26140 Jan  2 19:23 wdctl
-rwxr-xr-x  1 root root     946 Jan  2 19:23 which
lrwxrwxrwx  1 root root       8 Jan  7 12:14 ypdomainname -> hostname
-rwxr-xr-x  1 root root    1937 Jan  2 19:23 zcat
-rwxr-xr-x  1 root root    1777 Jan  2 19:23 zcmp
-rwxr-xr-x  1 root root    5764 Jan  2 19:23 zdiff
-rwxr-xr-x  1 root root     140 Jan  2 19:23 zegrep
-rwxr-xr-x  1 root root     140 Jan  2 19:23 zfgrep
-rwxr-xr-x  1 root root    2131 Jan  2 19:23 zforce
-rwxr-xr-x  1 root root    5938 Jan  2 19:23 zgrep
-rwxr-xr-x  1 root root    2037 Jan  2 19:23 zless
-rwxr-xr-x  1 root root    1910 Jan  2 19:23 zmore