Shell Programming and Scripting

Hi guys,

I am building a parent script which will call three scripts internally and i would like to run them in sequence manner, i.e. once previous script is successful then only i need to proceed with next else need to fail. I am running in bash mode and flavour is sun

Code:

main_script.sh

sh -x script1.sh > script1.log
status=$?
if [ $status -ne 0 ]; then
echo "Failed due to some reason"
exit 1
fi

sh -x script2.sh > script2.log
status=$?
if [ $status -ne 0 ]; then
echo "Failed due to some reason"
exit 1
fi

sh -x script3.sh > script3.log
status=$?
if [ $status -ne 0 ]; then
echo "Failed due to some reason"
exit 1
fi

I need to better solution to handle this and also i would require if rerun the main_script.sh then the those scripts which are executed successfully shouldn't execute once again. Like for eg. if script2.sh failed and if i run the main script i shouldn't run script1.sh rather than stating the message like script1 already completed hence proceeding with script2.sh