A brainfuck bash frontend. Use like so: $ ./bf.sh '++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.' Hello World! $

bf.sh

#!/bin/sh
CF="foo.c"
echo "#include <stdio.h>" > ${CF}
echo "int main() { char d[30000]; char *p=d;" >> ${CF}
echo $1 | while read -n1 c
do
    case $c in
    \>) echo "++p;" >> ${CF};;
    \<) echo "--p;" >> ${CF};;
    \+) echo "++*p;" >> ${CF};;
    \-) echo "--*p;" >> ${CF};;
    \.) echo "putchar(*p);" >> ${CF};;
    \,) echo "*p=getchar();" >> ${CF};;
    \[) echo "while (*p) {" >> ${CF};;
    \]) echo "}" >> ${CF};;
    esac
done
echo "}" >> ${CF}

cc ${CF}
./a.out