| # Towers of Hanoi in bash | |
| # | |
| # cribbed from the ksh93 book, example from exercises on page 85 | |
| # | |
| # Chet Ramey | |
| # chet@po.cwru.edu | |
| hanoi() # n from to spare | |
| { | |
| typeset -i nm1=$1-1 | |
| ((nm1>0)) && hanoi $nm1 $2 $4 $3 | |
| echo "Move disc $2 to $3" | |
| ((nm1>0)) && hanoi $nm1 $4 $3 $2 | |
| } | |
| case $1 in | |
| [1-9]) | |
| hanoi $1 1 2 3;; | |
| *) echo "${0##*/}: Argument must be from 1 to 9" | |
| exit 1;; | |
| esac |