True transparency in CentOS

I have enabled transparency for my gnome terminal but I am always getting my desktop wallpaper as background of terminal after googling I found compiz missing.

Compiz is available in base repo itself.

sudo yum install compiz

After installing look for system-Preferences-WindowsTweak Manager and last option would give compiz and there enable transparency.

Getting load information via SSH

I have tried so many ways but finally happy with this

#!/bin/bash

for i in localhost 127.0.01
do
ssh raja@$i 'uptime | grep -o load.*'
done

The above script will produce load average from a remote system.

Screenshot missing in CentOS 6.6

I have made CentOS 6.6 Install but suddenly I have seen that screen-shot I'm unable to take.

to fix it you have to install

yum  install gnome-utils

Restore Permission on Home directory

This Post I am taking from askubuntu , not answered by me but posting in my blog so that it can help others in future.

http://askubuntu.com/questions/567599/emsudo-chmod-x-caused-me-cannot-open-anything

Note: This is the way like doing as undoing what you have done.

sudo chmod -x * -R

find . -type d

You will get an error like below 

find: 'xxxxx': Permission denied 

then do as

find . -type d -exec chmod +x {} \;

Fix conky hiding

I have installed and got some conky script but after system starting its hiding automatically and the only way I can see it while shutting down.

So I have googled and got some solution which can fix my problem.

Open your conkyrc file which is a hidden file  in home directory with

$ vim  .conkyrc

or

$ vim ~/.conkyrc

Find the area of below lines and make the configuration as I have mentioned.

own_window yes
own_window_class Conky
own_window_type normal
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager 
own_window_transparent yes

Then save and exit from your conkyrc file.

Then in we have to reload the conky with updated configuration , so all you have to do is kill the conky and then start it again.

so In your terminal as root user do as

# killall conky & conky

or

$ su -c " killall conky & conky"

 
I hope that will help you.

See Open Ports in a Linux PC ( Localhost/Remote Machine)

I am writing a small post that will help you just to see what ports are open in  a particular remote/local machine.

we are going to use tool name as nc.

To install it , open your terminal and type as

 # yum install nc

                              After installing , you can use it with

nc -zv xxx.xxx.xxx.xxx <Port>

                                           for example:

nc -zv 192.168.1.100 80

                                          if you want to do that for 2-3 ports

nc -zv 192.168.1.100 80 8009

                                            if you want to do scanning for range of ports

nc -zv 192,168.1.100 80-8080

hope it will help you.

THANK YOU

Tutorial on .htpasswd and .htaccess with apache(httpd) in Linux

If there is a situation that have to dealt with like a public website but with some secret information.
How can we protect the information ? .

We can use .htpasswd and .htaccess in that time.

How  ? Lets see................

Open your terminal and type as

                        vim /etc/httpd/conf/httpd.conf

and find line no : 334 to 338. This is the area of httpd.conf that dealt with .htaccess

    334 # AllowOverride controls what directives may be placed in .htaccess files.
    335 # It can be "All", "None", or any combination of the keywords:
    336 #   Options FileInfo AuthConfig Limit
    337 #
    338     AllowOverride AuthConfig
 

Now look at line no 338 , before modifying it will look like

                     AllowOverride None

You have to modify it to

                     AllowOverride AuthConfig

Now make sure that if you have some website and VirtualHost configuration of that website is successfully completed.

Fixing SELECT command denied to user 'user'@'x' for table proc

Open your hibernate.cfg file  and append this below string to your connection string.

                                Use Procedure Bodies=false;

How To do Software RAID using mdadm in CentOS

Today I am writing about how to create Software RAID. Creating Software RAID is pretty easy. All we need either 3 equal size partitions on different harddisks or 3 equal size harddisks.

        In my approach , I am doing this in VmWare by choosing 3 virtual harddisks with equal 1 GB             Size. Our first step is we need to make those harddisks as ready for RAID.

        In your terminal type as

          # fdisk -l
       To see available partitions and then try to create RAID partitions in that.

        If We assume my 3 harddisks as /dev/sdb,/dev/sdc,/dev/sdd then in your terminal

          # fdisk /dev/sdb

        Then
       
         [root@ns1 sysadmin]# fdisk /dev/sdb

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
         switch off the mode (command 'c') and change display units to
         sectors (command 'u').
Command (m for help): m
Command action
   a   toggle a bootable flag
   b   edit bsd disklabel
   c   toggle the dos compatibility flag
   d   delete a partition
   l   list known partition types
   m   print this menu
   n   add a new partition
   o   create a new empty DOS partition table
   p   print the partition table
   q   quit without saving changes
   s   create a new empty Sun disklabel
   t   change a partition's system id
   u   change display/entry units
   v   verify the partition table
   w   write table to disk and exit
   x   extra functionality (experts only)
Command (m for help): n

          I am selecting new partition here as primary with default size ,( all my 3 VHDS having same size)

Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-130, default 1): 
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-130, default 130): 
Using default value 130

Now we have to change Partition type to RAID , so

Command (m for help): t
Selected partition 1
Hex code (type L to list codes):  fd ( fd for auto RAID)

Now just verify

Command (m for help): p
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8a6b2eca
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         130     1044193+  fd  Linux raid autodetect

All good , we can commit our changes.

Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.

Same as above do the same for /dev/sdc and /dev/sdd and then finally it will be like

[root@ns1 sysadmin]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00092c9c
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        2611    20458496   8e  Linux LVM
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8a6b2eca
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         130     1044193+  fd  Linux raid autodetect
Disk /dev/sdc: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6429c3f4
   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1         130     1044193+  fd  Linux raid autodetect
Disk /dev/sdd: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe883f58a
   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1         130     1044193+  fd  Linux raid autodetect
Disk /dev/mapper/VolGroup-lv_root: 18.9 GB, 18865979392 bytes
255 heads, 63 sectors/track, 2293 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/VolGroup-lv_swap: 2080 MB, 2080374784 bytes
255 heads, 63 sectors/track, 252 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Now we have to create RAID, Here I am choosing RAID 5 which needs minimum 3 RAID Harddisks

[root@ns1 sysadmin]# mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.

RAID 5 Created. --level indicates RAID level and after number and name of the devices.

To see your RAID Information execute this command

[root@ns1 sysadmin]# mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Tue Nov 11 00:05:20 2014
     Raid Level : raid5
     Array Size : 2086912 (2038.34 MiB 2137.00 MB)
  Used Dev Size : 1043456 (1019.17 MiB 1068.50 MB)
   Raid Devices : 3
  Total Devices : 3
    Persistence : Superblock is persistent
    Update Time : Tue Nov 11 00:05:26 2014
          State : clean
 Active Devices : 3
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 0
         Layout : left-symmetric
     Chunk Size : 512K
           Name : ns1.example.com:0  (local to host ns1.example.com)
           UUID : af2998ef:acc6cb1e:feb832f1:7f9b2f1b
         Events : 18
    Number   Major   Minor   RaidDevice State
       0       8       17        0      active sync   /dev/sdb1
       1       8       33        1      active sync   /dev/sdc1
       3       8       49        2      active sync   /dev/sdd1

Then we have to save our RAID Configuration.

In CentOS configuration file : /etc/mdadm.conf
In Debain baed /etc/mdadm/mdadm.conf

So save the configuration with

[root@ns1 sysadmin]# mdadm --detail --scan
ARRAY /dev/md0 metadata=1.2 name=ns1.example.com:0 UUID=af2998ef:acc6cb1e:feb832f1:7f9b2f1b
[root@ns1 sysadmin]# mdadm --detail --scan > /etc/mdadm.conf
[root@ns1 sysadmin]# 

if you want to see stats of your RAID

[root@ns1 sysadmin]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] 
md0 : active raid5 sdd1[3] sdc1[1] sdb1[0]
      2086912 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]

To set any RAID Disk as failed/faulty

# mdadm --fail /dev/md0 /dev/sdb1

To Remove any Disk from RAID

# mdamd --remove /dev/md0 /dev/sdb1

To add new disk

# mdadm --add /dev/md0 /dev/sdb1

If harddisk/partition has taken from another RAID , to flush all data in it before using into a new RAID

# mdadm --zero-superblock  /dev/sda1

Stop a Running RAID

# mdadm --stop /dev/md0

and to start

# mdadm --run /dev/md0 

Its supposed to run but with research i have done it wont run/start.

To start it we have to do like assembling again

# mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 

If you UUID of /dev/md0 it will be more easier and perfect.

# mdadm --assemble --scan --uuid=af2998ef:acc6cb1e:feb832f1:7f9b2f1b


Source:

http://www.devil-linux.org/documentation/1.0.x/ch01s05.html
https://raid.wiki.kernel.org/index.php/RAID_setup

VSFTPD - Passive mode port configuration

If your FTP got configured in Passive mode then to allow data transfers , you must to this.


##########/etc/vsftpd/vsftpd.conf################3

pasv_min_port=49152
pasv_max_port=65534

#############/etc/sysconfig/iptables-config##############

IPTABLES_MODULES="ip_conntrack_ftp"

Virtual Hosts in Apache -Linux

############################
Listen 192.168.56.150:80
Listen 192.168.56.151:81
############################

So above two lines are stands for IP based virtual hosting and as well as Port based Virtual Host.

The virtual Host which listens to the 1st IP will browse throughh port 80 but other will listens and browse through port 81 only.

Now We have to configure Virtual Hosts

#########################################
<VirtulHost 192.168.56.150:80>
    ServerAdmin root@localhost
    DocumentRoot /var/www/website1.com
    ServerName website1.com
    ServerAlias www.website1.com
    ErrorLog logs/www.website1.com_error.log
    CustomLog logs/www.website1.com_custom.log
</VirtualHost>
###########################################

###########################################
<VirtualHost 192.168.56.151:81>
    ServerAdmin root@localhost
    DocumentRoot /var/www/website2.com
    ServerName website2.com
    ServerAlias www.website2.com
    ErrorLog log/website2.com_error.log
    CustomLog log/webiste2.com_custom.log
############################################


Note: If you dont have your DNS Server then you can make some entries like below in your /etc/hosts file
########################
# vi /etc/hosts

192.168.56.150 website1.com
192.168.56.150 www.website1.com
192.168.56.151 website2.com
192.168.56.151 www.website2.com

###############################

So Name resolution can be done.


While I am doing

##############################

# service httpd restart

##############################

I am getting error like
###########
Starting httpd: [Wed Nov 19 01:17:25 2014] [warn] VirtualHost website1.com:80 overlaps with VirtualHost userinfo.com:80, the first has precedence, perhaps you need a NameVirtualHost directive

###########

Its because I am doing name based virtual hosting with one common IP, So we have to add that IP for name based virtualhosting with a line in /etc/httpd/conf/httpd.conf

######################

NameVirtualHost XXX.XXX.XXX.XXX:PORT

######################

Then save and restart with

######################

# service httpd restart

######################

and I am sure it will be fine.

Rename Database in MySQL

Today I am writing about how to rename MySQL Database.

So If you want to rename a database in MySQL dont forget taking backup of your Views,Procedures and Functions of current database. Because while you renaming changes wont apply for Views,Procedures and functions.

After you have taken the backup , We can go for renaming with the command below.

RENAME TABLE old_db.table TO new_db.table;

Here old_db is your old database name and new_db is your new database name. You have to execute this command for each table. And this is the way.

But what if we have a big database with 1000 tables ? executing the same above command for 1000 times is a stupid idea.

If you are using Linux you can use following BASH script to do that for you

for table in $(mysql -p -s -N -e "show tables from db1"); do mysql -s -N -e "rename table db1.$table to db2.$table"; done;

db1 is your old database name and db2 is your new database name and remaining everything will tool care by script only except giving password.:P

After executing the command successfully without any errors , you must have to restore that backup of Views,Proc's and Functions.

Errors: I have got one error with triggering. Generally some tables have triggers. So you copy the code of triggers and then delete those triggers. Then try to rename the table again.

After it got successful , just recreate the triggers for the same tables in new database.

I have done this trigger creation in MYSQL Workbench.

If you want to backup only Functions and not data of database then you can use this command

mysqldump --routines --no-create-info --no-data --no-create-db --skip-opt  <database> > outputfile.sql

Here : 

--routines                 =       for including routines ( views,functions,procedures)

--no-create-info       =       Do not write CREATE TABLE statements that re-create each dumped

                              table.

--no-data                  =        Do not write any row information for the table. This is very useful

                        if you want to get a dump of only the structure for a table.

 --no-create-db         =        This option suppresses the CREATE DATABASE /*!32312 IF NOT EXISTS*/

                        db_name statements that are otherwise included in the output if the
                        --databases or --all-databases option is given.

--skip-out        = --opt

                    This option is shorthand; it is the same as specifying
                    --add-drop-table --add-locks --create-options --disable-keys
                    --extended-insert --lock-tables --quick --set-charset. It should
                    give you a fast dump operation and produce a dump file that can be
                    reloaded into a MySQL server quickly.  As of MySQL 4.1, --opt is on
                    by default, but can be disabled with --skip-opt. To disable only
                    certain of the options enabled by --opt, use their --skip forms; for
                    example, --skip-add-drop-table or --skip-quick.

Famous SELinux Contexts

1. httpd SELinux context

                                        chcon -v --type=httpd_sys_content_t /path/to/dir

2.httpd SELinux context

                   chcon -Rv --type=httpd_sys_content_t /path/to/dir

3. Restore old/default context

                   restorecon -Rv -n /var/www/html


                    ;  -n switch to prevent any relabelling occurring.
4. Changing default port for services permitted SELinux

                                     #  semanage port -l
                    # semanage port -a -t http_port_t -p tcp 81
5. For Nagios

chcon -R -t httpd_sys_content_t /usr/local/nagios

        

  1st command to see what are the supported services. 2nd one changing default port for http service.



Note: Give me time to write them with proper explanation. 

More: http://wiki.centos.org/TipsAndTricks/SelinuxBooleans

Use Wget for downloading from FTP with username and Password

Hi , We all know we can use wget to download files from command-line.

Downloading files from FTP can be done but for with username and password you have to scroll manpage a lot.


wget --user <username> --password <password> ftp://xxx.xxx.xxx.xxx/dir/file/download


to resume

wget -c --user <username> --password <password> ftp://xxx.xxx.xxx.xxx/dir/file/download

Automation with Cron

In every linux cron service we found and it is most familiar command to every system administrator. I am proud to be one of them.

CRON - Introduction :

The cron is a daemon and we can manage it with service names crond. Cron is the best solution in all sort of Linux Operating systems to run scritps,commands at a determined or specified time. So as I did mentioned it is a service it will start with system and do its running as long as system running.

Generally cron will executes commands or scripts in "sh" shell (/bin/sh) . If you want to run your script in a different shell dont forget mentioning it before executing the command.

Cron Configuration file will be called as cron table and we can invoke it with command named as "crontab". Every user in linux have his/her own crontab and all users cron configurations will store at /var/spool/cron. All the cron jobs will be recorded at location /var/cron/log or /var/adm/cron/log.

CRON - Format :

Minute     Hour      DayofMonth      Month      Weekday     Command

Minute           Minute of the Hour         0 to 59
Hour               Hour Of the day             0 to 23
DOM              Day of month                 1 to 31
Month             Month of the yead          1 to 12
Weekday         Day of the week             0 to 6( 0 = Sunday)

In Cron scheduling if specific value not mentioned then automatically it will consider it for everytime. Unspecified part will have value as '*'. If particular field got particular value then it will executes at that time.Two integers separated by a dash mention like range. Range followed by a step value is nothing but period.Comma separated for all possibilities.

For Example:

1.        45 10 * * 1-5 echo " hi " > /dev/console

So 45 is Minute ,10 Hour, * for all & again * ,1-5 Range for weekday.

i.e Every Monday to Friday at time of 10:45 say "hi" and send to /dev/console.

2.         0,30 * 13 * 5 echo " hi "

So 0,30 i.e at every 0 min ( starting sec of a min) and after 30 Min , * for hour i.e for all hours ,13th of month and * for every month and 5 of the week  i.e Friday.

So the above time saying like

Everymonth 13th and everymonth Friday at every half -n-hour execute echo "hi" command.

3.    20 1 * * * find /tmp -atime +3 -type f -exec rm -f { } ';'

20 for minute
1 for Hour

* for day of month means all days of month ( 1-30)
* for month means all month (1-12)
* for weekday means for all days of a week ( 0-6)

So Everyday,Everyweek, Every month at time of 1:20 execute that script or command. and command simple finding unused file in /tmp for 3 days and removing it.

4.  10 10 1-30/2  * * echo " Hi"

command will execute at 10  hr :10  hr everymonth & everyweek but every odd date only.

NOTE: Cron have a small problem , that it wont load .profile or bashrc while executing commands , so if your script is have anything to do with environment variable you must have to mention it with in script.


CRON - Management :

crontab -e : To edit crontab
crontab -l : To list cron jobs
crontab -r : Remove all cron jobs

As I did mentioned every user have his own cron configuration file , root user can manage other user cron jobs with above commands. for example

crontab -e raja : edits raja crontab
crontab -l raja : list cron jobs of raja
crontab -r raja : removes cron jobs of raja


System administrators have a choice like which user allowed to do cron jobs and which are not.

If username exists in cron.deny then he wont be allowed for cron automation and if he does in cron.allow. In Linux by default all are allowed , so you can use cron.deny to block particular user for cron. But HP Linux only root user allowed by default and everyuser must be in cron.allow if we have ti allow cron and same for cron.deny to block.

Location : /etc


CRON - MORE :

Almost all Linux's have cron pre installed and have some crontab entries too which are pre installed.

/etc/cron.daily - all scripts in /etc/cron.daily  will execute scripts once a day.
/etc/cron.weekly - here scripts will run once per a week.


I hope it will help you to understand a little bit about cron. If you know advanced than this please let me know.

Help Helps You.

Raja

How to remove Shutdown,restart options from startmenu in windows server 2008.

1. Open run
2.Type gpedit.msc
3.choose User Configuration -> Administrative Templates -> Start menu & Task Bar

Choose Remove and prevent access to the Shut Down, Restart, Sleep, and Hibernate commands

and open it and select enabled.

Then

see whether it is updated or not. If its not updated then open run and type as

gpupdate /force

and now shutdown,restart removed from start menu.

Basic MySQL Administration

1. How to create a user and along with his privileges automatically ?

GRANT ALL PRIVILEGES ON database.* To 'username'@'hosr or IP ' IDENTIFIED BY 'password';

flush privileges;

2. How to give only specific privileges to users ?

GRANT select,lock tables ON *.* To 'user'@'host or IP ' IDENTIFIED BY 'password';

flush privileges;

3. How to see permissions of a user ?

show grants for 'username'@'hostanme';

4. How to revoke all given privileges ?

revoke all privileges on *.* from 'user'@'host';

5. How to take backup of database ?

mysqldump --user <username> --password=<password> databasename > databasebackup.sql

6. How to take backup of two databases ?

mysqldump --user <username> --password=<password> databasename1 databasename2 > databasebackup.sql

7. How to take backup of all databases in MySQL ?

mysqldump --user <username> --password=<password> -all-databases > alldbbackup.sql

8. How to take backup of table in database ?

mysqldump --user <username> --password=<password> database_name database_table \  >  databasebackup.sql 

9. How to restore one database ?

mysql --user <username> --password=<password> databasename < databasebackup.sql
mysql_upgrade -p -u root --force

Reset root password in CentOS 6

In CentOS base version , I mean v6 there is a bug and you cant reset the password in the usual way. I am going to mention both the ways.

To reset root password of CentOS machine, Start your PC. You will get GRUB screen and there choose " e" to edit booting kernel. After that It will open in a new window with current configuration.

If you observe there you can find a line with two last words like  " rhgb quiet \" Dont worry about "\" , use backspace and remove " rghb quiet". Then add in that line as " a 1 " and then press F10 key to boot. it will successfully boot into /bin/sh and there by using passwd command you can reset the root  password of the server.

If its not working .

1 . SELinux may be causing the problem , to take care of it you have to restart Machine and again edit GRUB , but this time we have to one more parameter extra.

Now add parameters like " a selinux=0 1 " , So CentOS will boot into /bin/sh with permissive mode of selinux.

2. Authentication Token manipulation error

Simple , the root partition has mounted as read-only so you are unable to write( password update -new password writing ) anything to root directory. so you have to remount it with read-write access & of course you are a root user .

mount -o remount, rw /

So after that try again with passwd command to reset the password.

Hope it helps.

CentOS 7 not detecting Windows

Install ntfs-3g package and you should be able to mount your Windows OS installed partition then after mounting it run command as

grub2-mkconfig -o /boot/grub2/grub.cfg

There you will see Windows getting detected in updated grub configuration.

Hope it helps.

CentOS 7 Repositories

EPEL for CentOS 7
## RHEL/CentOS 7 64-Bit ## # wget http://dl.fedoraproject.org/pub/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm # rpm -ivh epel-release-7-0.2.noarch.rpm

RPMForge for CentOS 7
sudo rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt sudo yum install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm

Remi for CentOS 7
sudo rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm sudo sed -i 's/enabled=0/enabled=1/g' /etc/yum.repos.d/remi.repo

Note: Didnt get full information about RPM Fusion , if anybody get it let me know.