jploudre

find . -name \*.md -type f -exec pandoc -o {}.txt {} \;

would run pandoc on all files with a .md suffix, creating a file with a .md.txt suffix. 
(You will need a wrapper script if you want to get a .txt suffix without the .md, 
or do ugly things with subshell invocations.) {} in any word from -exec to the 
terminating \; will be replaced by the filename.

jploudre

sub := (command1 = "#a") ? "add"
	     : (command1 = "#b") ? "build"
	     : (command1 = "#c") ? "change"
	     : (command1 = "#d") ? "down"
	     : (command1 = "#e") ? "unten"
	     : (command1 = "#f") ? "find"
	     : (command1 = "#i") ? "info"
	     : (command1 = "#j") ? "join"
	     : (command1 = "#k") ? "kill"
	     : (command1 = "#l") ? "locate"

jploudre

#!/bin/bash

for file in *
do
   # Avoid renaming diretories!
   if [ -f "$file" ]
   then
       newname=`head -1 $file`
       if [ -f "$newname" ]
       then