[root@vm-dvorak-c ~]# cp V21187-01.zip V21187-01.zip.copy
[root@vm-dvorak-c ~]# md5sum V21187-01.zip*
481109619f863ebaa33249eef1eccd23  V21187-01.zip
1cb3f9d3100895d0625bf75e3cff141e  V21187-01.zip.copy

[root@vm-dvorak-c ~]# cat /etc/issue
Oracle Linux Server release 5.6
Kernel \r on an \m

[root@vm-dvorak-c ~]# uname -a
Linux vm-dvorak-c.int.rdtex.ru 2.6.32-100.26.2.el5 #1 SMP Tue Jan 18 20:11:49 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

[root@vm-dvorak-c ~]# ls -l V21187-01.zip*
-rwxr--r-- 1 root root 1678679412 May 12 16:21 V21187-01.zip
-rwxr--r-- 1 root root 1678679412 May 12 16:31 V21187-01.zip.copy

[root@vm-dvorak-c ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              29G  4.7G   23G  18% /
tmpfs                 1.5G     0  1.5G   0% /dev/shm