Linux Notes All In One

Add third-party yum-repositories
rpm -Uvh http://repo.webtatic.com/yum/centos/5/latest.rpm
yum install --enablerepo=webtatic git-all
Using CentOS 5 Repos in RHEL 5 Server
wget http://mirrors.nl.kernel.org/centos/5/os/x86_64/CentOS/centos-release-notes-5.10-0.x86_64.rpm
wget http://mirrors.nl.kernel.org/centos/5/os/x86_64/CentOS/centos-release-5-10.el5.centos.x86_64.rpm
rpm -e redhat-release-notes-5Server redhat-release-5Server --nodeps
rpm -ivh centos-release-notes-5.10-0.x86_64.rpm centos-release-5-10.el5.centos.x86_64.rpm
Installing RPMforge
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el5.rf.x86_64.rpm
rpm -ivh rpmforge-release-0.5.3-1.el5.rf.x86_64.rpm
yum search java | grep 'java-'
cd /etc/yum.repos.d

Open a file browser from bash
nautilus --browser .
Exit from git diff
Window+Q 
VNC Server Setup
/etc/sysconfig/vncservers
VNCSERVERS="1:vncuser 2:vncuser2 3:vncuser3"
VNCSERVERARGS[1]="-geometry 1600x1200"

service vncserver start|stop|restart
Create xstartup scripts
vi ~/.vnc/xstartup
Uncomment the following two lines (remove the "#" characters):
unset SESSION_MANAGER
exec /etc/X11/xinit/xinitrc
Managing your VNC sessions
vncserver -kill :1
List all VNC server sessions

ls ~/.vnc/*.pid
Check vnc version in redhat
rpm -qa | grep vnc-server
rpm -qf /usr/bin/vncserver

Copy and paste stops working in VNC session
Run vncconfig &

Install Java in Redhat
Add CentOs repository
yum search java-1.7
yum install java-1.7**
alternatives --display java
/usr/sbin/alternatives --config java

alternatives --install /usr/bin/java java
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