Standard input is empty

lrwxrwxrwx  1 root root       5 Jan  7  2015 snice -> skill
-rwxr-xr-x  1 root root  104552 Jan  2  2015 sort
-rwxr-xr-x  1 root root    4333 Nov  7  2014 sotruss
-rwxr-xr-x  1 root root   18768 Dec 21  2014 splain
-rwxr-xr-x  1 root root   71884 Jan  2  2015 split
-rwxr-xr-x  1 root root   22096 Nov  7  2014 sprof
-rwxr-xr-x  1 root root   74528 Dec 28  2014 sqlite3
-rwxr-xr-x  1 root root   75528 Jan  2  2015 stat
-rwxr-xr-x  1 root root   67272 Jan  2  2015 stdbuf
-rwxr-xr-x  1 root root   26456 Dec 25  2014 strings
-rwxr-xr-x  1 root root  233388 Dec 25  2014 strip
-rwxr-xr-x  1 root root   38572 Jan  2  2015 sum
-rwxr-xr-x  1 root root  288276 Jan  2  2015 systemd-analyze
-rwxr-xr-x  1 root root   30228 Jan  2  2015 systemd-cat
-rwxr-xr-x  1 root root  259608 Jan  2  2015 systemd-cgls
-rwxr-xr-x  1 root root   54820 Jan  2  2015 systemd-cgtop
-rwxr-xr-x  1 root root   46616 Jan  2  2015 systemd-delta
-rwxr-xr-x  1 root root   26124 Jan  2  2015 systemd-detect-virt
-rwxr-xr-x  1 root root  382508 Jan  2  2015 systemd-nspawn
-rwxr-xr-x  1 root root   34316 Jan  2  2015 systemd-path
-rwxr-xr-x  1 root root  267788 Jan  2  2015 systemd-run
lrwxrwxrwx  1 root root      31 Jan  7  2015 systemd-stdio-bridge -> /lib/systemd/systemd-bus-proxyd
-rwxr-xr-x  1 root root   17952 Jan  2  2015 tabs
-rwxr-xr-x  1 root root   34472 Jan  2  2015 tac
-rwxr-xr-x  1 root root   67304 Jan  2  2015 tail
-rwxr-xr-x  1 root root   26144 Jan  2  2015 taskset
lrwxrwxrwx  1 root root       8 Jan  7  2015 tclsh -> tclsh8.6
-rwxr-xr-x  1 root root    5468 Aug 27  2014 tclsh8.6
-rwxr-xr-x  1 root root   30344 Jan  2  2015 tee
-rwxr-xr-x  1 root root   38536 Jan  2  2015 test
-rwxr-xr-x  1 root root   71432 Jan  2  2015 tic
-rwxr-xr-x  1 root root  271892 Jan  2  2015 timedatectl
-rwxr-xr-x  1 root root   55500 Jan  2  2015 timeout
-rwxr-xr-x  1 root root    9688 Jan  2  2015 tload
-rwxr-xr-x  1 root root   13852 Jan  2  2015 toe
-rwxr-xr-x  1 root root  102800 Jan  2  2015 top
lrwxrwxrwx  1 root root      10 Jan  7  2015 touch -> /bin/touch
-rwxr-xr-x  1 root root   13892 Jan  2  2015 tput
-rwxr-xr-x  1 root root   46728 Jan  2  2015 tr
-rwxr-xr-x  1 root root   54952 Jan  2  2015 truncate
-rwxr-xr-x  1 root root   18056 Jan  2  2015 tset
-rwxr-xr-x  1 root root   34440 Jan  2  2015 tsort
-rwxr-xr-x  1 root root   26216 Jan  2  2015 tty
-rwxr-xr-x  1 root root   13204 Jan  2  2015 tzselect
-rwxr-xr-x  1 root root   39133 May 26  2014 ucf
-rwxr-xr-x  1 root root   19367 May 26  2014 ucfq
-rwxr-xr-x  1 root root   10644 May 26  2014 ucfr
-rwxr-xr-x  1 root root   30344 Jan  2  2015 unexpand