Thanks to the Ubuntu Touch install page I found out that you can do a full Android backup of apps and data.
Backup
adb backup -apk -shared -all
That will create a backup.ab file on your computer which can get huge
Restore
adb restore backup.ab
Restoration can be done even on a different ROM and it even maintains settings apps which require you to log in.
Full details of adb backup are as follows and you could selectively backup important app data and such.
adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all] [-system|-nosystem] [<packages...>] - write an archive of the device's data to <file>. If no -f option is supplied then the data is written to "backup.ab" in the current directory. (-apk|-noapk enable/disable backup of the .apks themselves in the archive; the default is noapk.) (-obb|-noobb enable/disable backup of any installed apk expansion (aka .obb) files associated with each application; the default is noobb.) (-shared|-noshared enable/disable backup of the device's shared storage / SD card contents; the default is noshared.) (-all means to back up all installed applications) (-system|-nosystem toggles whether -all automatically includes system applications; the default is to include system apps) (<packages...> is the list of applications to be backed up. If the -all or -shared flags are passed, then the package list is optional. Applications explicitly given on the command line will be included even if -nosystem would ordinarily cause them to be omitted.)
Another great adb command is screen recording which I believe is only in Android 4.4 (KitKat) and above
adb shell screenrecord /sdcard/test.mp4
Ctrl+C to stop recording the video
If you have multiple devices connected, use -s deviceID to spec
adb devices # List of devices attached # 00bb1122 device # 0022334455 device adb -s 0063686250152c5a shell
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