This is because ssh is not enabled in ubuntu by default.

type this in your terminal
sudo apt-get install ssh

scp root@SERVER_B_NAME:abc.sql /root

xyiry@xyiry-laptop:/etc/skel$ sudo adduser xyiry
Password:
Adding user `xyiry’…
Adding new group `xyiry’ (1004).
Adding new user `xyiry’ (1004) with group `xyiry’.
Creating home directory `/home/xyiry’.
Copying files from `/etc/skel’
Enter new UNIX password:
Retype new UNIX password:
No password supplied
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
Changing the user information for xyiry
Enter the new value, or press ENTER for the default
Full Name []: Xyiry
Room Number []: 0
Work Phone []: 012-2643164
Home Phone []: 012-2643164
Other []:
Is the information correct? [y/N] y

his is how you unzip your files in Linux OS

gzip -d my_tar_file.tar.gz or
gunzip my_tar_file.tar.gz

Try this

If you are using Red Hat or distributions that based on Red Hat, then you are going to use the RPM method.

rpm -i new_program.rpm
This installs the program (-i option for install)
rpm -q program_name
This “queries” your system to see if you’ve got a certain program installed. Let’s say you hear there’s a new version of the popular Internet browser Opera for Linux and you don’t know if your Red Hat based distribution installs this by default or not. Before you download the RPM for Opera, you could type the command: rpm -q opera. If you do have the package installed, it would give you the version number:

opera-5.0_whatever-number

rpm -e opera. This gets rid of Opera from your system. Then you would type rpm -i opera_beta8.rpm (or whatever the package is actually called). That installs the new version.

As I said, this is not the most efficient way to update packages. The usual way is to use the -U (as in Update command. You would type:

rpm -U opera_new_version.rpm

Just download the latest version of PHP and unzip it.

Second step is to make sure you unzip in the desired PHP directory and run the configure script.
To enable PHP to access Sybase, you may need to –with-sybase-ct.
You will also need to specify the web server interface to be used; in this situation, this is Apache,
so we will use –with-apache To generate a CGI version of PHP, –with-apache.

Below is the complete script to configure with the two otions above
Here is a complete configure script with the above two options, as well as a number of other options that are useful.

# ./configure –with-apache=../apache_1.3.19
–with-sybase-ct=/opt/sybase –enable-bcmath –enable-calendar
–enable-ctype –enable-exif –enable-ftp –enable-gd-imgstrttf
–with-gd –enable-trans-sid –enable-shmop –enable-sockets
–enable-sysvsem –enable-sysvshm –enable-wddx

Then you will have to change to apache’s path to where you have unzip the apache distribution

If the configuration runs and completed succesfully, you may proceed

# make && make install

PHP will compule without any problems. After installing, you will need to install the php.ini file.

# cp php.ini-optimized /usr/local/lib/php.ini

The next step is to change settings in /usr/local/lib/php.ini, you need to set the file with the following parameters shown below.

magic_quotes_sybase = on
sybct.min_server_severity = 11
sybct.min_client_severity = 11

I also like to set the following:
To set the register global on or off (it is advisable to be off) Do not depend on register globals
too much this is for security purposes.

register_globals = off
include_path=.:/usr/local/lib/php

Linux send mail error

make sure your setting looks like this
etc/mail/local-host-name

example.com
mail.example.com

to create tar file
tar -cvf file.tar mystuff/
tar -czvf file.tgz mystuff/

to extract file
tar -xvf file.tar
tar -xzvf file.tgz

to test and view
tar -tvf file.tar
tar -tzvf file.tgz