Rewrite jot/seq loop in env.sh

env.sh

@@ -47,14 +47,16 @@ if [ -z "$*" ]; then
 	echo "==> Back to system shell..."
 	echo
 else
-	if [ $# -gt 1 ]; then 
+	s='$'
+	if [ "$#" -gt 1 ]; then
 		par=""
-		if command -v seq >/dev/null; then
-                    for p in `seq 1 $(($#-1))`; do par=$par"\$$p "; done
-                elif
-                   command -v jot >/dev/null; then
-                    for p in `jot $(($#-1)) 1`; do par=$par"\$$p "; done
-                fi
+		p=0
+		while : ; do
+			p=$(($p+1))
+			[ $p -gt $# ] && break
+			a=`eval echo "$s$p"`
+			par="$par$a "
+		done
 		eval $new_env $par "\"\$$#\""
 	else
 		eval $new_env $*