andre@andre-M17xR4:~/Desktop$ sudo apt-get install testdisk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 atom : Depends: git
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).