/projects/2==>mkdirz dirztest
/projects/2==>chdir dirztest
/projects/2/dirztest==>pwd
/projects/2/dirztest
/projects/2/dirztest==>filez
/projects/2/dirztest==>mkdirz dirztest2
/projects/2/dirztest==>filez
dirztest2
/projects/2/dirztest==>rmdirz dirztest2
/projects/2/dirztest==>filez
/projects/2/dirztest==>chdir ..
/projects/2==>rmdirz dirztest2
/projects/2==>rmdirz dirztest
/projects/2==>