One way to do this is:

Supposedly, the following will work to copy a file (or group of files) from a directory and preserve the attributes (ownership and permissions).

$ cd /path/to/source/dir

$ find . | cpio -pdumv /path/to/destination/dir

The cpio command is a copy command designed to copy files into and out of a cpio or tar archive,
automatically preserving permissions, times, and ownership of files and
subdirectories.

When I create a new linux virtual system and use OpenWRT at home to route out to the internet, I need to add a default route so that I can get out to the Internet.  For some versions of linux, it doesn't do it automatically for me (or maybe it's the OpenWRT router and something I've misconfigured as it works for some systems, but not others?).   The command to do this is:

If you have a dedicated database server and the partition with the MySQL database fills up (or starts getting low), you can move your MySQL databases to a different location.

Let’s say you want to move the database to /home/mysql

Sometimes you want to be able to quickly search the contents of some files for a command or some other piece of text. The following command (for Cygwin obviously) will work:

for i in `find /cygdrive/c/Devel/SQL/ | grep sql `; do echo $i; grep cursor $i; done;

Sometimes you need to bind a second IP address to a Network Interface Card.  Maybe you need access to another network temporarily or you just need to fix something that comes with a default address not on your network.

From Linux, you can execute the following command:

ifconfig eth0:1 192.168.5.16 netmask 255.255.255.0 up

This will add a second IP Address to your eth0 network interface.