Port Scan in RedHat /CentOS /Fedora /Ubuntu

#HOST=127.0.0.1;for((port=1;port<=65535;++port));do echo -en "$port ";if echo -en "open $HOST $port\nlogout\quit" | telnet 2>/dev/null | grep 'Connected to' > /dev/null;then echo -en "\n\nport $port/tcp is open\n\n";fi;done

if you need pls change ipaddress and you can add more number 65535 

CentOS /Fedora /RedHat /Ubuntu if disk space is low send mail

PATHS="/export/home /home"

AWK=/usr/bin/awk

DU="/usr/bin/du -ks"

GREP=/usr/bin/grep

DF="/usr/bin/df -k"

TR=/usr/bin/tr

SED=/usr/bin/sed

CAT=/usr/bin/cat

MAILFILE=/tmp/mailviews$$

MAILER=/bin/mailx

mailto="rajat@yeswedeal.com" 

for path in $PATHS

do

 DISK_AVAIL=`$DF $path |  $GREP -v "Filesystem" | $AWK '{print $5}'|$SED 's/%//g'` 

 if [ $DISK_AVAIL -gt 90 ];then

  echo "Please clean up your stuff\n\n" > $MAILFILE

  $CAT $MAILFILE | $MAILER -s "Clean up stuff" $mailto 

 fi

done 

Installing subversion with apache on centos

Subversion exists to be universally recognized and adopted as an open-source, centralized version control system characterized by its reliability as a safe haven for valuable data; the simplicity of its model and usage; and its ability to support the needs of a wide variety of users and projects, from individuals to large-scale enterprise operations.

#yum install mod_dav_svn subversion httpd

#service httpd start

Go to subversion.conf in /etc/httpd/conf.d/. Edit as below 

cd /etc/httpd/conf.d/
vi subversion.conf

 

This is a configuration with username and password for the client  

#htpasswd -cm /etc/svn-auth-conf  rajat --- This command is not needed for the first configuration. 

To create the first user with password 

#htpasswd -m /etc/svn-auth-conf --- use this command to add another user 

Configure your repository 

#mkdir /var/www/svn --- create folder svn 

#cd /var/www/svn --- change diectory to the newly created svn directory 

#svnadmin create repos --- create svn repository named repos 

#chown apache.apache -R repos --- change ownership of 'repos' to apache 

#/etc/init.d/httpd restart --- restart apache

Open you browser and type 'http://localhost/svn/repos'.

Installation Moodle on CentOS / Fedora /RedHat

Moodle is a Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It is a Free web application that educators can use to create effective online learning sites.

#yum install  mysql mysql-server httpd php php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc

#service httpd start
#service mysqld start
#mysql_secure_installation (set up root password)
# tar zxvf moodle-weekly-19.tgz
#mv moodle/ /var/www/html/
http://yourdomin.com

vi /var/www/html/moodle/config.php
php  /// Moodle Configuration File

unset($CFG);

$CFG = new stdClass();
$CFG->dbtype    = 'mysql';
$CFG->dbhost    = 'localhost';
$CFG->dbname    = 'moodle';
$CFG->dbuser    = 'root';
$CFG->dbpass    = 'password';
$CFG->dbpersist =  false;
$CFG->prefix    = 'mdl_';

$CFG->wwwroot   = 'http://192.168.68.24/moodle';
$CFG->dirroot   = '/var/www/html/moodle';
$CFG->dataroot  = '/var/www/html/moodle/moodledata';
$CFG->admin     = 'admin';

$CFG->directorypermissions = 00777;  // try 02777 on a server in Safe Mode

$CFG->passwordsaltmain = 't16y.SrDkojXnad5a&<8.Yw!';

require_once("$CFG->dirroot/lib/setup.php");
// MAKE SURE WHEN YOU EDIT THIS FILE THAT THERE ARE NO SPACES, BLANK LINES,
// RETURNS, OR ANYTHING ELSE AFTER THE TWO CHARACTERS ON THE NEXT LINE.