Some doc about bash

BASH.md

+Debugging
+---------
+
+Use bash option **-x** to show each bash execution
+
+    bash -x my_script.sh
+You will usually have to mush information. Active this option in your script only on the suspected bugging part.
+
+    set -x #Active debbugging
+    suspected_function
+    set +x #Stopping debugging
+
+You can also use **-v** which will display all the input (stdin) of the script
+
+Finaly you can stop the bash to replace meta characters with **-f** e.g. `ls *` really looks for `*`
+
+See more: [Bash for beginners](http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_02_03.html)
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