$file = ''; $file_new = ''; $data = file($file); $data = shuffle($data); file_put_contents($file_new,$data);
root@desk[~]# sed -e 's/[^0-9]//g;' /etc/passwd | tr -d '\n'
0011223447506070812913101411012100145025252727323233334242909099996060616162621000100