Shell Programming and Scripting

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

[ -f status ] || date '+0 %c' > status

read job datestamp < status

if [ $job -eq 0 ]
then	if sh -x script1.sh > script1.log
	then	job=$((job + 1))
		date "+$job %c" > status
	else	echo "Failed due to some reason"
		exit 1
	fi
fi

if [ $job -eq 1 ]
then	if sh -x script2.sh > script2.log
	then	job=$((job + 1))
		date "+$job %c" > status
	else	echo "Failed due to some reason"
		exit 2
	fi
fi

if sh -x script3.sh > script3.log
then	job=0
	date "+$job %c" > status
else	echo "Failed due to some reason"
	exit 3
fi

for i in 1 2 3;
  do    SNAM="script$i"
        if      [ ! -s "$SNAM.log" ]
                  then  if ! sh -x $SNAM.sh &> $SNAM.log 
                          then  mv $SNAM.log $SNAM.err
                                echo "Error in $SNAM.sh"
                                exit $i
                        fi
                  else  echo "$SNAM.log exists - script NOT rerun."
        fi
  done

[ -f status ] || date '+0 %c' > status

#!/bin/bash
good=./good
for job in script1.sh script2.sh script3.sh
do
  if [ -f $good ] && fgrep -x $job $good >/dev/null
  then
    echo "$job already completed"
  else
    echo "Running $job"
    sh -x $job > ${job%.*}.log
    status=$?
    if [ $status -ne 0 ]; then
      echo "failed with exit $status"
      exit 1
    else
      echo $job >> $good
    fi
  fi
done
echo "all good, removing $good"
rm $good

	then	job=$((job + 1))
		date "+$job %c" > status

[ -f status ] || date '+0 %c' > status

read job datestamp < status

if [ $job -eq 0 ]