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Full Discussion: Making a script to copy files not seen before (using md5sum)
Top Forums Shell Programming and Scripting Making a script to copy files not seen before (using md5sum) Post 302852187 by nbsparks on Tuesday 10th of September 2013 05:59:16 PM
Old 09-10-2013
OK... So I modified the code of "photos-new.sh" to be as follows:
Code:
#!/bin/bash
set -x

# The username variable passed by command line to this script
USER=$1

# The source directory where the photo folder on the phone is mirrored to
SRC=/hd1/home/$USER/.phonesync/photos-backup

# The destination directory where we want to copy only new photos we have copied before
DST=/hd1/home/$USER/.phonesync/photos-new

# The MD5 list file that tracks which files we have copied before
MD5=/hd1/home/$USER/.phonesync/photos-backup.md5

# Check files against the MD5 list and then copy if not previously copied
# Then add the md5 for that file to the MD5 list

cd $SRC
find . -type f | while IFS= read -r f
do
  FMD5=$(md5sum $f)
  grep -q $FMD5 $MD5
  if [[ $? -ne 0 ]]; then
    if [ ! -d $DST/${f%/*} ]; then
      mkdir -p $DST/${f%/*}
    fi
    cp $f $DST/$f
    md5sum $f >> $MD5
  fi
done

# In case this script gets run as root, redo the file ownership so users can access their photos
chown -R $USER:$USER $DST

I ran the script and got the following output:
Code:
nick@server ~/.phonesync$ ./photos-new.sh nick
+ USER=nick
+ SRC=/hd1/home/nick/.phonesync/photos-backup
+ DST=/hd1/home/nick/.phonesync/photos-new
+ MD5=/hd1/home/nick/.phonesync/photos-backup.md5
+ cd /hd1/home/nick/.phonesync/photos-backup
+ find . -type f
+ IFS=
+ read -r f
++ md5sum ./DCIM/100MEDIA/IMAG0003.jpg
+ FMD5='c0bd05642752af82a79fef52fffb3120  ./DCIM/100MEDIA/IMAG0003.jpg'
+ grep -q c0bd05642752af82a79fef52fffb3120 ./DCIM/100MEDIA/IMAG0003.jpg /hd1/home/nick/.phonesync/photos-backup.md5
+ [[ 1 -ne 0 ]]
+ '[' '!' -d /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA ']'
+ mkdir -p /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA
+ cp ./DCIM/100MEDIA/IMAG0003.jpg /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA/IMAG0003.jpg
+ md5sum ./DCIM/100MEDIA/IMAG0003.jpg
+ IFS=
+ read -r f
++ md5sum ./DCIM/100MEDIA/IMAG0001.jpg
+ FMD5='ccf0730cdc59d92323465401905b9a79  ./DCIM/100MEDIA/IMAG0001.jpg'
+ grep -q ccf0730cdc59d92323465401905b9a79 ./DCIM/100MEDIA/IMAG0001.jpg /hd1/home/nick/.phonesync/photos-backup.md5
+ [[ 1 -ne 0 ]]
+ '[' '!' -d /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA ']'
+ cp ./DCIM/100MEDIA/IMAG0001.jpg /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA/IMAG0001.jpg
+ md5sum ./DCIM/100MEDIA/IMAG0001.jpg
+ IFS=
+ read -r f
++ md5sum ./DCIM/100MEDIA/IMAG0002.jpg
+ FMD5='9a0d8d0d82690ecf7c690fe386679ae3  ./DCIM/100MEDIA/IMAG0002.jpg'
+ grep -q 9a0d8d0d82690ecf7c690fe386679ae3 ./DCIM/100MEDIA/IMAG0002.jpg /hd1/home/nick/.phonesync/photos-backup.md5
+ [[ 1 -ne 0 ]]
+ '[' '!' -d /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA ']'
+ cp ./DCIM/100MEDIA/IMAG0002.jpg /hd1/home/nick/.phonesync/photos-new/./DCIM/100MEDIA/IMAG0002.jpg
+ md5sum ./DCIM/100MEDIA/IMAG0002.jpg
+ IFS=
+ read -r f
+ chown -R nick:nick /hd1/home/nick/.phonesync/photos-new

And my file structure shows the files were copied:

Code:
nick@server ~/.phonesync$ ls -a -l -R
.:
total 24
drwxr-xr-x 4 nick nick 4096 Sep  4 10:42 .
drwxr-xr-x 7 nick nick 4096 Sep  4 10:37 ..
drwxr-xr-x 3 nick nick 4096 Sep  4 11:15 photos-backup
-rw-r--r-- 1 nick nick  235 Sep 10 14:50 photos-backup.md5
drwxr-xr-x 3 nick nick 4096 Sep 10 14:50 photos-new
-rwxr-xr-x 1 nick nick  942 Sep 10 14:30 photos-new.sh

./photos-backup:
total 12
drwxr-xr-x 3 nick nick 4096 Sep  4 11:15 .
drwxr-xr-x 4 nick nick 4096 Sep  4 10:42 ..
drwxr-xr-x 3 nick nick 4096 Sep  4 11:09 DCIM

./photos-backup/DCIM:
total 12
drwxr-xr-x 3 nick nick 4096 Sep  4 11:09 .
drwxr-xr-x 3 nick nick 4096 Sep  4 11:15 ..
drwxr-xr-x 2 nick nick 4096 Sep  4 11:10 100MEDIA

./photos-backup/DCIM/100MEDIA:
total 4080
drwxr-xr-x 2 nick nick    4096 Sep  4 11:10 .
drwxr-xr-x 3 nick nick    4096 Sep  4 11:09 ..
-rw-r--r-- 1 nick nick 1243984 Jun 28  2012 IMAG0001.jpg
-rw-r--r-- 1 nick nick 1551828 Jun 28  2012 IMAG0002.jpg
-rw-r--r-- 1 nick nick 1369884 Jun 28  2012 IMAG0003.jpg

./photos-new:
total 12
drwxr-xr-x 3 nick nick 4096 Sep 10 14:50 .
drwxr-xr-x 4 nick nick 4096 Sep  4 10:42 ..
drwxr-xr-x 3 nick nick 4096 Sep 10 14:50 DCIM

./photos-new/DCIM:
total 12
drwxr-xr-x 3 nick nick 4096 Sep 10 14:50 .
drwxr-xr-x 3 nick nick 4096 Sep 10 14:50 ..
drwxr-xr-x 2 nick nick 4096 Sep 10 14:50 100MEDIA

./photos-new/DCIM/100MEDIA:
total 4080
drwxr-xr-x 2 nick nick    4096 Sep 10 14:50 .
drwxr-xr-x 3 nick nick    4096 Sep 10 14:50 ..
-rw-r--r-- 1 nick nick 1243984 Sep 10 14:50 IMAG0001.jpg
-rw-r--r-- 1 nick nick 1551828 Sep 10 14:50 IMAG0002.jpg
-rw-r--r-- 1 nick nick 1369884 Sep 10 14:50 IMAG0003.jpg
nick@server ~/.phonesync$

This is very encouraging. I'll do some more testing and report back.
 

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