CALLER=$(ps -ef | grep "^[a-zA-Z]* [ ]* $PPID " | awk '{print $3}')
CALLER_CALLER=$(ps -ef | grep "^[a-zA-Z]* [ ]* $CALLER " | awk '{print $3}')
echo I was called from $CALLER who was called by $CALLER_CALLER
CALLER=$(ps -ef | grep "^[a-zA-Z]* [ ]* $PPID " | awk '{print $3}')
CALLER_CALLER=$(ps -ef | grep "^[a-zA-Z]* [ ]* $CALLER " | awk '{print $3}')
echo I was called from $CALLER who was called by $CALLER_CALLER