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Top Forums Shell Programming and Scripting Compare directories and copy differences (files) in a another directory Post 303038811 by nimafire on Saturday 14th of September 2019 08:13:23 AM
Old 09-14-2019
Compare directories and copy differences (files) in a another directory

Hey
im working on script that can compare 2 directory and check difference, then copy difference files in third diretory.
here is the story:
in folder one we have 12 subfolder and in each of them near 500 images hosted.
01 02 03 04 05 06 07 08 09 10 11 12
in folder 2 we have same subfolder but maybe diffrence images like in folder 2, subfolder 07 maybe image 45 is deleted so we need backup of it,
ive write this script:
Code:
f1="" 
 f2=""
 des=""
for x in `rsync -rcnC --out-format="%n"  $f1 $f2`
do
        if [ -d "$f1/$x" ];
then
mkdir -p "$des/$x"
else
            cp -frv $f1/$x $des/$x
        fi
done

also i try to use diff command but script eat ram and cpu. im looking for alternative method, is there any ?
 

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rmf(1)							      General Commands Manual							    rmf(1)

NAME
rmf - remove folder (only available within the message handling system, mh) SYNOPSIS
rmf [+folder] [-help] [-[no]interactive] OPTIONS
Prints a list of the valid options to this command. Asks for confirmation before deleting a folder. By default, rmf deletes a folder and its messages without asking for confirmation. If you specify the -interactive option, rmf asks if you are sure before deleting the folder. You are advised to use this option, since when rmf deletes a folder its contents are lost irretrievably. DESCRIPTION
The rmf command removes all of the messages within the current folder, and then removes the folder itself. If there are any files within the folder which are not part of MH, they are not removed, and an error message is displayed. You can specify a folder other than the current folder by using the +folder argument. If you do not specify a folder, and rmf cannot find the current folder,rmf asks you whether you want to delete +inbox instead. If the current folder is removed, it makes +inbox current. Note that the rmf command irreversibly deletes messages that do not have other links, so use it with caution. If the folder being removed is a sub-folder, the parent folder becomes the new current folder, and rmf tells you that this has happened. This provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list and returning to the current folder from which the list was extracted. Using rmf to delete a read-only folder deletes the private sequence and current message information from the file, without affecting the folder itself. If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself. PROFILE COMPONENTS
Path: To determine the user's Mail directory EXAMPLES
This example shows how rmf asks for confirmation when the -interactive option is used: % rmf -interactive +test Remove folder "test"? y FILES
The user profile. SEE ALSO
rmm(1) rmf(1)
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