Using scp To Safely Transfer File

scp is safer compared to rcp, as it encrypts the whole file. However, it will cause a considerable load on the server.
Scp functions pretty much like cp command used for copying files.

Here is the format for scp command:

$ scp user@source.hostname:source_filename user@destination.hostname:dest_dir/dest_filename

Most of the time, there’s no need to put the hostname if you’re copying the local file.

$ scp source_filename user@destination.hostname:dest_dir/dest_filename

There is also no need to put user@, if the source and the destination is the same machine.

Some more examples:

You are logged into abigail and transferring a file from benjamin to abigail. You’re in your home directory in abigail, the file.dat is the filename.

abigail$ scp username@benjamin.hostname:file.dat .

Transferring file.dat in your current directory on benjamin to abigail in the data directory and not changing the name of the file.

benjamin$ scp file.dat username@abigail.hostname:data/

The following is the same of above but changing the file.dat name at the destination directory

benjamin$ scp file.dat username@abigail.hostname:data/

You’ll be asked for your password, like you’re logging in to the remote machine. The tranfer will run right after the correct password keyed-in.

Some Useful Yum Commands

The yum utility keeps downloaded data files and packages for reuse. You may copy packages from the repository cache directories under /var/cache/yum/, and use them elsewhere if you wish. If you remove a package from the cache, you do not affect the copy of the software installed on your system.

To install the package tsclient, enter the command:
su -c 'yum install tsclient'

To install the package group MySQL Database, enter the command:
su -c 'yum groupinstall "MySQL Database"'

To remove the tsclient package from your system, use the command
su -c 'yum remove tsclient'

To remove all of the packages in the package group MySQL Database, enter the command:

su -c 'yum groupremove "MySQL Database"'