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Top Forums Shell Programming and Scripting Help with file compare and move script Post 303026437 by mattz40 on Tuesday 27th of November 2018 05:36:01 PM
Old 11-27-2018
Thanks for the advice above, it got me further along but I've run into another wall or two. Here's where I'm at so far
Code:
!/bin/bash
# Compare file names in source and target directories
# Move duplicates from source to duplicates directory
# Move remaining files in source to target directory
# Only care about files names, not upper lower case, checksum, date, time

cd /mnt/nas/source
dir1=$(ls *.*)
cd /mnt/nas/target
dir2=$(ls *.*)
cd / 
dir3="/mnt/nas/Duplicates"

for FN in $dir1;
do
    if [ -f "$dir2 -eq ${FN}" ];
        then echo "Duplicate "${FN};
        else echo "Unique "${FN};
    fi;
done

The first problem is I can't get the IF statement to work no matter where I put quotes, parens, brackets, or curly brackets. Also switching -eg for =, ==, or / makes no difference. I get either a 'too many parameters on line 16" error or it drops right through and declares every file unique when 10 out of 20 are duplicates.

Second problem is I have a file named 'space test dupe10.jpg' that I named to see how it would handle spaces in file names. I have a simplified version of the script (no IF statement) that just echoes the variables as it increments through them, and it appears to treat space, test, and dupe10.jpg as 3 different files.

This isn't a life or death situation so I greatly appreciate any and all advice. I'm just updating an electronic picture frame that hangs on the living room wall and runs for 4 hrs per night which makes adding pictures a pain since it has to be done while it's on. With this script I can put the pics on my NAS and they'll get copied over when the frame boots. I can do that now but duplicate file names are a concern. I made this thing before you could buy them, from instructions in a physical popular mechanics magazine. 15 or so years and several thousand pics later and you can imagine how many times my wife (a photography hobbyist no less) has tried to load "flowers.jpg" on it.
 

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MV(1)							      General Commands Manual							     MV(1)

NAME
mv - move or rename files SYNOPSIS
mv [ -i ] [ -f ] [ - ] file1 file2 mv [ -i ] [ -f ] [ - ] file ... directory DESCRIPTION
Mv moves (changes the name of) file1 to file2. If file2 already exists, it is removed before file1 is moved. If file2 has a mode which forbids writing, mv prints the mode (see chmod(2)) and reads the standard input to obtain a line; if the line begins with y, the move takes place; if not, mv exits. In the second form, one or more files (plain files or directories) are moved to the directory with their original file-names. Mv refuses to move a file onto itself. Options: -i stands for interactive mode. Whenever a move is to supercede an existing file, the user is prompted by the name of the file followed by a question mark. If he answers with a line starting with 'y', the move continues. Any other reply prevents the move from occur- ring. -f stands for force. This option overrides any mode restrictions or the -i switch. - means interpret all the following arguments to mv as file names. This allows file names starting with minus. SEE ALSO
cp(1), ln(1) BUGS
If file1 and file2 lie on different file systems, mv must copy the file and delete the original. In this case the owner name becomes that of the copying process and any linking relationship with other files is lost. 4th Berkeley Distribution April 29, 1985 MV(1)
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