An Intresting Shell Script

A Shell Script to print the Chess pattern on the terminal.

• $ vi chessboard


• for (( i = 1; i <= 9; i++ )) ### Outer for loop ###


• do


• for (( j = 1 ; j <= 9; j++ )) ### Inner for loop ###


• do


• tot=`expr $i + $j`


• tmp=`expr $tot % 2`


• if [ $tmp -eq 0 ]; then


• echo -e -n "\033[47m "


• else


• echo -e -n "\033[40m "


• fi


• done


• echo -e -n "\033[40m" #### set back background colour to black


• echo "" #### print the new line ###


• done

 

Run the above script as follows:

$ chmod +x chessboard

$ ./chessboard

 

 

OUTPUT: