Voting
Category
real language
Bookmarking
Language bash
(recursive function)
| Date: | 12/30/07 |
| Author: | Koen Noens |
| URL: | n/a |
| Comments: | 0 |
| Info: | http://www.gnu.org/software/bash/ |
| Score: |  (2.67 in 6 votes) |
#!/bin/bash
## Koen Noens, december 2007
## Lyrics for "99 bottles of beer"
#
# GNU bash shell
# functions (can be recursive)
# built-in string manipulation
# built-in arithmetic operations
#
function drinkBeer() {
howmany=$1
txt1=" of beer on the wall"
txt2="take one down, pass it around"
txt3="go to the shop and buy some more"
# sing
bottles $howmany ; echo "$txt1"
bottles $howmany ; echo "${txt1:0:9}"
# continue drinking or go to the shop ?
if [[ howmany -gt 0 ]]; then
howmany=$(($1 - 1))
nowwhat=$txt2
else
howmany=99
nowwhat=$txt3
STOP="x" #comment this to continue endlessly
fi
# keep drinking
echo "$nowwhat"
bottles $howmany ; echo "$txt1" ; echo -e
[[ "$STOP" == "x" ]] || drinkBeer $howmany
# last line has test ([[ ]]) to avoid endless loop
# whitout it, song just restarts with 99 bottles, forever.
}
# manage syntax and spelling correction
function bottles() {
case $1 in
1) echo -n "one bottle" ;;
0) echo -n "no more bottles" ;;
*) echo -n "$1 bottles" ;;
esac
}
# start song
drinkBeer 99
Download Source | Write Comment
Alternative Versions
| Version | Author | Date | Comments | Rate |
|---|---|---|---|---|
| No loop, no recursion | Frédéric Lang | 07/08/08 | 3 | |
| Self Writing | Olosta | 07/18/12 | 0 | |
| Bourne Again Shell | Dave Plonka | 04/20/05 | 5 | |
| portable, rich of features, readable | Bastian Bittorf | 08/20/07 | 0 | |
| with arrays and functions | Vittorio Cagnetta | 06/30/06 | 0 | |
| Arithmetic on English words for numbers | Bill Brown | 07/31/08 | 0 | |
Download Source | Write Comment
Add Comment
Please provide a value for the fields Name,
Comment and Security Code.
This is a gravatar-friendly website.
E-mail addresses will never be shown.
Enter your e-mail address to use your gravatar.
Please don't post large portions of code here! Use the form to submit new examples or updates instead!
Comments