How to copy all photos in gallery to linux desktop machine? I have a bunch of photos on my Samsung Galaxy Tab running 3.2 which I'd like to copy over USB to my main machine running Linux so I can work on them with GIMP and other power tools.   Despite this seeming like a simple and common thing to do, I haven't found any way to do this after hours of googling and experimenting.

Some answers and articles already out there assume the existence of sdcard, which I don't have (AFIK), mention directories named /dcim or /emmc (sp?), involve Windows-only software such as Kies, or are about some specialized problem not relevent here.   

I figured I could poke around the Galaxy Tab's file system with adb, but found no place holding .jpg or other image files, which I should have at least 30 or so of.  If I knew the path, I could just do an adb pull to get my photos.

If it's possible, I prefer to use adb pull, since it can be automated, but I also wonder how regular folk, the nontechies, get their photos off their tablets.  I have read about MTP and that the USB mass storage device way of doing things doesn't work with the Galaxy Tab (or anything Samsung?)  

Just to be clear, my photos do exist on the tablet.  I can see them all in the Gallery, as a regular end user.   I do have the proper USB cable, and adb runs fine.
I assume you have Galaxy Tab with Honeycomb and don't have a SD card slot, but have 16/32 GBs of internal storage. In Honeycomb, MTP mode (Windows Media Transfer Protocol) is used instead of USB Mass storage. That's why it's isn't working for you perhaps.

First read what MTP is and why it's being used by OEMs now here. MTP and ICS. Also this Question should be useful - Android Stack Exchange - Can I disable MTP mode and just have a regular USB connection?

Have your tried enabling MTP support for Linux? These are the steps for a Ubuntu distro - Guide To Setup MTP.

Alternatively via using ADB I believe you can access Gallery files in /mnt/sdcard/. The sdcard folder should be there even if you don't have a SD card slot. Camera photos would be in /DCIM folder.

Full steps would be (if anyone needs) -

adb shell
cd /mnt/sdcard/DCIM/


You can check which folders exist here and verify if your Media files are here or not.