Useful for debugging with gdb:
    
    set follow-fork-mode child
    set detach-on-fork off

    info inferiors
    inferior infno


Hashcat for the 3rd argument:
    
    hashcat -m 0 -a 3 md5_hash.txt \?a\?a\?a\?a\?a\?a


LostKey with correct arguments:
    ./LostKey flag{Th3 _key_1s_in_th3_secret_com p4rtme $(python2 -c "print 'nt_of_your_t00l_sh3d...}'")


My zsh complains about
    zsh: no matches found: ?a?a?a?a?a?a
and
    zsh: parse error near `}'
:/