UNIX for Dummies Questions & Answers

while :
do
        if ls filename* > /dev/null 2> /dev/null
        then
                for file in filename*
                do
                        ...
                done
        else
                echo "No incoming files found"
                break;
        fi
done

while :
do
        if ls filename* > /dev/null 2> /dev/null
        then
                # your previous code here
        else
                echo "No incoming files found"
                break;
        fi
done

#!/bin/ksh

cd /var/opt/app/portal/7.4/pin/backup/wasim/mir

while :
do
        if ls filename* > /dev/null 2> /dev/null
        then
                for file in filename*
                do
                        while :
                        do
                                procid=$( fuser "$file" )
                                if [ -z "$procid" ]
                                then
                                        echo "File not in use"

                                        # Move file to different directory after processing
                                        # so that it will not be picked again .
                                        # mv "$file" different_dir/

                                        break;
                                else
                                        echo "File in use"
                                        sleep 50
                                fi
                        done
                done
        else
                echo "No incoming files found"
                exit 1
        fi
done