Question

I have a script A which call a script G . Inside script G I cannot change any thing (don’t have write access).

Inside Script G :

ExitProcess ()
{

  case $1 in
    "0" ) echo "$0: Finished successfully."
          exit 0
      ;;
*)  echo "$0: Unknown return status ($1)"
      exit $1
      ;;
 esac

}

Due to which I am exiting from Script A , how to stop this ?

Script A:

check_status()
{

UserName="sbrk6"
MachineName="sn26"

Tstatus=`ssh -f -T ${UserName}@${MachineName} ps -ef  | grep -w "Manager 1 PR" | egrep -v "grep|less|vi|more"`
Cstatus=`ssh -f -T ${UserName}@${MachineName} ps -ef | grep -w "gt1" | egrep -v "grep|less|vi|more"`

if [ "$Tstatus" ]
then
        if [ "$Cstatus" ]
        then

                Gstatus=`ps -ef  | grep -w "Gth_Hndl" | egrep -v "grep|less|vi|more"`

                if [ -z "$Gstatus" ]
                then
                        genth_start
                fi
        fi
else

        if [ -z "$Tstatus" ]
        then
                if [ -z "$Cstatus" ]
                then

                        Gstatus=`ps -ef  | grep -w "Ghfdjdjd" | egrep -v "grep|less|vi|more"`
                        if [ "$Gstatus" ]
                        then
                                genth_stop
                        fi
                fi
        fi
fi
}


genth_start()
{
echo START

. GD1_Sh 

}


genth_stop()
{
echo STOP

. G_Sh

##This is the Script G ###

}

while :
do
        check_status
done

Want this while loop to continue until I kill this script

Answer 1

If you can’t change Script G, then it is probably easiest to arrange to run it as a separate process rather than using the . (dot) command to run it in the current process.

If Script G can only be used in the dotted mode, then you could write a third script, call it Script Z, which is designed to run Script G and exit, while your Script A continues happily (reporting the error from Z exiting, then doing whatever is appropriate).

If that is not feasible either, then you could use eval and $(...) carefully, so that when the functions from Script G that contain exit statements actually exit, they are running in a sub-shell and not in your main shell. This is fiddlier to do than running Script G separately, whether wrapped with Script Z or not, so I’d use one of those mechanisms first.