Shell Programming and Scripting

LOG DIR      |     SYNC DIR
FILE1        |      FILE1
FILE2        |      FILE3
FILE3        |      OTHER FILENAME
FILE4        |
FILE5        |

FILE2
FILE4
FILE5

ls dir1 | while read FILE
do
        [ -e "dir2/$FILE" ] || echo "$FILE"
done

#!/bin/bash
ls /log/*.DAT | while read FILE
do
        [ -e "/log/sync/$FILE" ] || echo "$FILE"
done

[root@RedHat5 ~]# ls /log
FILE1.DAT
FILE2.DAT
FILE3.DAT
FILE4.DAT
sync
[root@RedHat5 ~]# ls /log/sync
FILE2.DAT

[root@RedHat5 ~]# ./test.sh 
/log/FILE1.DAT
/log/FILE2.DAT
/log/FILE3.DAT
/log/FILE4.DAT

printf "%s\n" /log/*.DAT | while read FILE
do
   [[ -e /log/sync/${FILE##*/} ]] || echo "$FILE"
done

[[ -e /log/sync/${FILE##*/} ]] || echo "$FILE" > /tmp/DAT.tmp