Example 4-2 example4_2_number_dir.bash

• # This scripts finds number of files for each directory D* and reports it on the screen.

• # The command echo echoes what ever is written in front of it

• echo "Directory Number of files”

• ls -d D* | while

• read dir_name

• do

• # notice that the results of all commands within ` some commands` will go to the designated variable num

• num=`ls $dir_name/* |wc -l `

• # The command echo will echo the content variables

• echo $dir_name " " $num

• done

• echo "program is finished"