There are three ways to copy or move files in gThumb.
To copy a file in the browser view, use Edit ▸ Copy, or press Ctrl+C. To move a file, use Edit ▸ Cut, or press Ctrl+X. Then navigate to the destination folder using the folder tree. Use Edit ▸ Paste, or press Ctrl+V, to complete the file transfer.
To copy a file to another folder, simply drag the file (with a sustained left-mouse click) to the destination folder visible in the folder tree. To move a file, hold down the Shift key while dragging.
You can also use the middle mouse button to drag files. In this case, gThumb will ask you if you wish to copy the files, move the files, or cancel the operation.
Select the files to be transferred, right-click on the selection, and choose Copy to... or Move to.... This will open a folder-selection dialog, where you can choose the destination folder. At the bottom of the dialog, you can enable the View the destination option if you want to go to the destination folder after the file transfer is complete.
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