root@ubuntu:/home/ubuntu/Downloads# tar -xf testdisk-6.14-WIP.linux26-x86_64.tar.bz2
root@ubuntu:/home/ubuntu/Downloads# ls
gdisk_0.8.1-1build1_amd64.deb testdisk-6.14-WIP testdisk-6.14-WIP.linux26-x86_64.tar.bz2
root@ubuntu:/home/ubuntu/Downloads# cd testdisk-6.14-WIP
root@ubuntu:/home/ubuntu/Downloads/testdisk-6.14-WIP# ls
AUTHORS COPYING fidentify.8 ico l photorec.8 README testdisk.8 THANKS
ChangeLog documentation.html fidentify_static INFO NEWS photorec_static readme.txt testdisk_static VERSION
root@ubuntu:/home/ubuntu/Downloads/testdisk-6.14-WIP# ./testdisk_static