I came across the following: Android adb command to get total contacts on device
Im at a point where my display isnt working. The command given above just displays my contatcts. Is there some way I can convert it to a backup file? So that I can restore it on my spare android phone?
I'm not sure whether creating a backup file manually is possible (you would need to know how data is stored and read by the contacts app in .vcf files), but if you simply want to extract and save the data:
Simply use ">" sign, eg.:
adb shell content query --uri content://com.android.contacts/contacts | wc -l > Contacts.txt
or (if you want to specify a path)
adb shell content query --uri content://com.android.contacts/contacts | wc -l > /home/pi/Desktop/Contacts.txt
This will create a file named Contacts (with a .txt format) that holds the command output