99 Bottles of Beer/Shell

Task in Shell(s)

99 Bottles of Beer/Shell is part of 99 Bottles of Beer. You may find other members of 99 Bottles of Beer at Category:99 Bottles of Beer.

99 Bottles of Beer done in any of the Shell-languages.

UNIX Shell

Works with: Bourne Shell

<lang bash>#!/bin/sh

i=99 s=s

while [ $i -gt 0 ]; do

       echo "$i bottle$s of beer on the wall"
       echo "$i bottle$s of beer

Take one down, pass it around"

       # POSIX allows for $(( i - 1 )) but some older Unices didn't have that
       i=`expr $i - 1`

[ $i -eq 1 ] && s= || s=s

       echo "$i bottle$s of beer on the wall

" done</lang>

Works with: Bash

Works with: ksh93

Works with: zsh

<lang bash>bottles() {

 beer=$1
 [ $((beer)) -gt 0 ] && echo -n $beer ||  echo -n "No more"
 echo -n " bottle"
 [ $((beer)) -ne 1 ] && echo -n "s"
 echo -n " of beer"

}

for ((i=99;i>=0;i--)); do

 ((remaining=i))
 echo "$(bottles $remaining) on the wall"
 echo "$(bottles $remaining)"
 if [ $((remaining)) -eq 0 ]; then
   echo "Go to the store and buy some more"
   ((remaining+=99))
 else
   echo "Take one down, pass it around"
   ((remaining--))
 fi
 echo "$(bottles $remaining) on the wall"
 echo

done</lang>

C Shell

See 99 Bottles of Beer/Shell <lang csh>@ i=99 set s=s while ($i > 0) echo "$i bottle$s of beer on the wall" echo "$i bottle$s of beer" echo "Take one down, pass it around" @ i = $i - 1 if ($i == 1) then set s= else set s=s endif echo "$i bottle$s of beer on the wall" echo "" end</lang>