Make 1989/fubar/fubar.sh use bash

Fixed for ShellCheck as well.

The if [ .. ] was changed to if [[ .. ]] and this was done in the C code
as well.

1989/fubar/fubar.c

@@ -10,7 +10,7 @@ if(m && q=='T' && o=='T'){m=0;(void)fread(tt,11,1,stdin);(void)printf("T %9d\n",
 cc ouroboros.c -o x 
 #define zxc ;{/*
 cat ./ouroboros.c | ./x $1 > x1
-if [ $? -ne 0 ]; then
+if [[ $? -ne 0 ]]; then
 exit
 fi
 mv x1 ./ouroboros.c

1989/fubar/fubar.sh

@@ -1,8 +1,8 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 # to run fubar in the 'proper' way
 
 # parse args
-if [ $# -ne 1 ]; then
+if [[ $# -ne 1 ]]; then
     echo "usage: $0 number" 1>&2
     exit 1
 fi
@@ -15,5 +15,5 @@ r fubar.c
 w ouroboros.c
 EOF
 chmod +x ouroboros.c
-./ouroboros.c $1
+./ouroboros.c "$1"
 #rm -f ouroboros.c x1 x

thanks-for-help.md

@@ -758,6 +758,9 @@ not strictly necessary but nonetheless more correct, even if not warned against.
 `$PATH`) to files referred to in the code. The path problem was also fixed in
 [fubar.sh](/1989/fubar/fubar.sh).
 
+Cody also 'modernised' the script to use `bash` and fixed for ShellCheck. The
+`if [ .. ]` was changed in the C code as well as the script.
+
 
 ## <a name="1989_jar.1"></a>[1989/jar.1](/1989/jar.1/jar.1.c) ([README.md](/1989/jar.1/README.md]))