Is there a command for AHK to synchronize folders?

[daiweisc]

I want to synchronize two folders, it is a one-way image copy.
What commands is used to execute in AHK?

[mikeyww]

You could:

1. Loop, Files
2. See if the file exists in the other directory.
2.a. If not, copy it.
2.b. If so, FileGetSize; if newer, copy with overwrite.
3. If mirroring: loop through files in the target directory, recycling files that do not exist in the source.

A different approach for a mirror is to recycle the entire target directory, and then copy the source directory to the target directory. This ignores the possibility that the target directory might contain newer files.

Adjust the approach according to what you need to do with newer files, orphan files, etc.

Robocopy can handle just about every situation easily.

[daiweisc]

Thanks.

If so, FileGetSize; if newer, copy with overwrite

Doesn’t it take time to judge the newness of the file?

[mikeyww]

You are absolutely right, as every command that is executed does indeed require time. This applies not only to AHK but also Robocopy, commercial synchronizers, and all programs, for that matter. With a solid-state disk, many of these times are quite short and hardly noticeable with small numbers of files. You can time your script to judge whether the time is acceptable, or compare times with different approaches. A_TickCount can be used to mark the time. You can then subtract values as needed.

I meant to indicate using FileGetTime, rather than size, though some people prefer to use the size to gauge certain differences. For me, well, size is just not the highest priority....

[Chunjee]

I've had good luck with RoboCopy which comes with most versions of Windows out of the box. /mir is the option to "mirror" two directories
https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy


You can drive it with ahk using RunWait or similar.

Code: Select all

Path_Source := "C:/Your folder path"
Path_Destination := "C:/Your folder path"
RunWait, %comspec% /c Robocopy "%Path_Source%" "%Path_Destination%" *.* /MIR /R:1,,hide

[daiweisc]

Thanks a lot. It solve the problem.

[daiweisc]

by the way ,

Code: Select all

RunWait, %comspec% /c Robocopy "%Path_Source%" "%Path_Destination%" *.* /MIR /R:1,,hide

what is the mean of "*.*"?

[Chunjee]

what is the mean of "*.*"?

Specifies the file or files to be copied. Wildcard characters (* or ?) are supported. If you don't specify this parameter, *.* is used as the default value.

[daiweisc]

Thanks for reply.