gistfile1.sh

#!/bin/bash
# How to exit if any command in a bash subshell fails.

exitIfFailed () 
{
  rv=$?;
  if [ $rv -ne 0 ]; then 
    exit $rv; 
  fi
}


(
echo -n "T"; 
# false;
exitIfFailed;
echo -n "e";
# false;
exitIfFailed;
echo -n "s";
# false;
exitIfFailed;
echo -n "t";
# false;
exitIfFailed;
) # > /dev/null 2>&1
subshell_rv=$?
echo ""

echo "Returned: $subshell_rv"