Configure Chat Server on Linux

First you need to install MySQL & Apache

yum install mysql-server
yum install httpd

check the status of the services of MySQL & httpd if its not started,

/etc/init.d/mysqld start
/etc/init.d/httpd start

after installing MySQL & Apache you need to download Chat server application, which you can download from here : Download Chat Server Software

after downloading install this application.

rpm -uvh packagename.rpm

this will install the application on your machine.
Now you need to open two ports which are 9090 & 9091.

Now you need to configure your chat server using your browser with the url : "localhost:9090".

Follow the instructions and go ahead with the configuration.

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Create Own Command in Linux

write

#!/bin/bash

after writing above line write your script and save it and give any name,
give the permission of execute.

now copy your script in /bin directory or /usr/bin directory.

now your are done. open the terminal and type command, name you have given to your script.

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Remote ROOT access to MySQL

login to mysql

mysql -u username -p password

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'passwd';

now exit from mysql and restart the service of mysql.

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Mysql Database Import/Export Command Line

Export mysql database

          mysql -u username -p database name > filename.sql


Import mysql database

          mysql -u username -p database name < filename.sql


Export all databases from remote server to local machine

          mysqldump -u username -p -h hostname --all-databases > filename.sql

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How to run C program in ubuntu

sudo apt-get install build-essential

now open gedit or any other text editor
type your program and save with .c extension.

if your program name is sample.c, type below command

gcc -o sample sample.c

it will create executable file with the name sample.

now, to run the program just type

./sample

it will run your program.

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Share Ubuntu Printer with Windows

Install Samba and smbfs
          sudo apt-get install samba smbfs

after installation of samba and smbfs open smb.conf
          sudo gedit /etc/samba/smb.conf

find the section
########## Printing ##########


find below lines and do changes as below

# CUPS printing.  See also the cupsaddsmb(8) manpage in the
# cupsys-client package.
    printing = cups
    printcap name = cups

    security = share

after doing above changes now make changes in [printers] section with

          browsable = yes
          guest ok = yes

Save the file and restart the service of samba. Now, go to windows and find the printer.

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