hashcat keeps ending with "killed", what am I doing wrong?

[DyOS]

Yea, I'm just not sure if I have enough memory to even open or manipulate the file.  I will give that a shot.

head -n5 /root/users.txt > /root/newuser5.txt

That will copy the first 5 lines ( -n5 ) from users.txt to a new file called newuser5.txt

I don't think that will use much memory. Or maybe in your case use -n1 (I assume hashes are one per line?) and use the new file in your command.

Thanks!