Shell Programming and Scripting

i=50
for dir in VF_*
do
        if [ -d "$VF_$i" ]; then
                cd VF_$i
                pwd
                     cp ../VF_$i_old/restrt.bin .
                     ./oppre_cT_T < inp01_$i > out.dat &
        wait $!
        else
                echo Directory VF_$i does not exist.
        fi

        let i=$i+50
        cd ../
done

#!/usr/bin/env ksh

set -e          # force exit if subshell fails
ls -d vf_* | while read dir
do
    (   # run in subshell to preserve original working directory
        if ! cd $dir
        then
            echo "abort: cannot switch to dir: $dir"
            exit 1
        fi

        echo "running command in: $dir"     # verbose for testing if needed
        #your-command-goes-here

        if  grep -q "success" output.dat
        then
            echo "successfully executed command in: $dir"
        else
            echo "abort: command failed in dir: $dir"
            exit 1
        fi
    )
done

exit

for dir in vf_*
do
   cd $dir
   pwd
   cd ../
done

#!/bin/bash

i=50
c=0
for dir in VF_*
do
        let c=$c+1
        if [ -d "$VF_$i" ]; then
                cd VF_$i
                pwd
                if [ $c -ne 1 ]
                        cp ../VF_$i_old/restrt.bin .      #copying the file from previous successful run
                     ./oppre_cT_T < inp01_$i > out.dat &
                else
                     ./oppre_cT_T < inp01_$i > out.dat &
                fi
        wait $!
        else
                echo Directory VF_$i does not exist.
        fi

        let i_old=$i
        let i=$i+50

        cmd=$(cat ../../phi_0_6_T/VF_100/out.dat | tail -9 | grep -ci "SUCCESS")

        if [ $cmd -ne 0 ]; then
                echo "Success"
        cd ../
        else
                echo "Unsuccessful"
                exit 1
        fi

done

exit

#!/usr/bin/env bash

i_old=""                    # last directory number to copy restart file from
ls  -d VF_* |sed 's/.*_//'|sort -n| while read i        # for each directory, sort by the number setting i
do
        if [[ -d "$VF_$i" ]]; then
            if ! cd VF_$i
            then
                echo "abort: unable to switch to VF_$i"     # rare, but better to test for failure than to assume
                exit 1                                      # that it will always work
            fi

            pwd
            if [[ -n $i_old ]]                      # not the first directory
            then
                cp ../VF_$i_old/restrt.bin .      #copying the file from previous successful run
            fi

            ./oppre_cT_T < inp01_$i > out.dat 
            i_old=$i    

            #cmd=$(cat ../../phi_0_6_T/VF_100/out.dat | tail -9 | grep -ci "SUCCESS")
            # um, the previous seems wrong as you are always checking the same out.dat file. maybe this:
            n=$( tail -9 out.dat | grep -ci "success" )

            if (( $n > 0 )); then
                echo "Success ($i)"
            else
                echo "Unsuccessful ($i)"
                exit 1
            fi

            cd ../
        else
                echo "Directory VF_$i does not exist."
        fi
done

exit