Mouad-BGD

Rpm
+++
To install a package (i=install v=verbose h=show hash marks)	rpm -ivh package
To uninstall (erase) a package				        rpm -e package
To upgrade a package					        rpm -Uvh package
To test a package to see how it would install (without installing, also checks dependencies)	rpm -Uvh --test package


To verify a package (extra verbose output)		rpm -Vvv package
To verify ALL installed packages on the system		rpm -Va

Mouad-BGD

Gnome 3
-------
	to add shortcut application to gnome luncher
		for ur account:
			add the file: ~/.local/share/applications/Your_app.desktop
			and past:	
					[Desktop Entry]
					Encoding=UTF-8
					Version=1.0
					Type=Application

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tar
---
	tar -zxvf {file.tar.gz}

another distenation

tar -zxvf tarball.tar.gz -C <directory>

or move to ur destination and use:
        tar -zxvf {path to file.tar.gz}

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groups username                     check the groups of that user
useradd -G {group-name} username    add user to a group
gpasswd -d username groupname       remove a user from a group

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MySQL errors
-------------
    ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’

    start mysql deamon

phpMyAdmin
----------
  Forbidden 
    You donEdit the /etc/httpd/conf.d/phpmyadmin.conf and uncomment the line deny from all.

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Error
    ur server dont serve css files
 fix
    AddHandler application/x-httpd-php .css   /* To each virtualhost */

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for start we suggest that you combine all configuration on virtual hosting into a single file called vhost.conf located in the /etc/httpd/conf.d/ directory.

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systemctl start mysqld.service
systemctl stop mysqld.service
systemctl enable mysqld.service   Enable the service over reboots (which just sets up some symlinks in the relevant dirs). same as chkconfig mysqld on  

systemctl disable mysqld.service
systemctl status mysqld.service


If you want to use the service commands they should still work as well:
service mysqld start

Mouad-BGD

if u have rewrite module installed : check by  apachectl -M    or apache2ctl -M
then check if the .htaccess is enabled (by default default is disabled)
to enable it go /etc/httpd/conf/httpd.conf and change:
  <Directory />
    Options FollowSymLinks
    AllowOverride None         /* change None to All */

to

   <Directory />

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eclipse.ini 
openFile
-vm
/usr/java/jdk1.7.0_04/bin/java   // add this line
-vmargs
-Xms40m
-Xmx384m