app@li203-130:~$ sudo apt-get install percona-server-client
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  mysql-client-core-5.1 libdbd-mysql-perl mysql-server-core-5.1
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  percona-server-client-5.1
The following NEW packages will be installed:
  percona-server-client percona-server-client-5.1
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B/2311kB of archives.
After this operation, 5411kB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 28834 files and directories currently installed.)
Unpacking percona-server-client-5.1 (from .../percona-server-client-5.1_5.1.54-12.5-188.lucid_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/percona-server-client-5.1_5.1.54-12.5-188.lucid_i386.deb (--unpack):
 trying to overwrite '/usr/share/man/man1/mysqlcheck.1.gz', which is also in package mysql-client-core-5.1 0:5.1.41-3ubuntu12.8
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Selecting previously deselected package percona-server-client.
Unpacking percona-server-client (from .../percona-server-client_5.1.54-12.5-188.lucid_all.deb) ...
Processing triggers for man-db ...
Errors were encountered while processing:
 /var/cache/apt/archives/percona-server-client-5.1_5.1.54-12.5-188.lucid_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)