shell-001

for:

shell_test

 #!/bin/bash
 var=
 var=$var+
 echo $var
 mkdir only_a_joke

shell_joke

 #!/bin/bash
 ./shell_test
 for((i=;i<;i++));
 do

     ./shell_test
     cp ./shell_test ./only_a_joke/
     cd only_a_joke
 done