#!/bin/bash    

# To $? epistrefei ton kwdiko e3odou ths teleytaias 
# entolhs pou ektelesthke
echo hello
echo $?     # 0 : epitygxhmenh ektelesh

lsdlsd      # agnwsth entolh
echo $?     # 127 - genikws mh mhdenikh se sfalma

echo Gia sou

exit 113    # Prepei na einai 0-255
echo $?
