commandline session $mkdir 1 $pwd /home/jeffrin/Test $ls 1 $mkdir 2 $ls 1 2 $cd 2/ $mkdir -p hello/world $ls hello $cd hello/ $ls world $cd world/ $ls $pwd /home/jeffrin/Test/2/hello/world $cd – /home/jeffrin/Test/2/hello $pwd /home/jeffrin/Test/2/hello $ls world $ inner working mkdir.c