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etherpad

• instructions: http://code.google.com/p/etherpad/wiki/Instructions

• installing on CentOS

yum install npm

• git clone https://github.com/ether/etherpad-lite

ethercalc

https://github.com/ether/etherpad-lite#installation

installing in centos

http://serverfault.com/questions/299288/how-do-you-install-node-js-on-centos

• dependencies

yum install gzip git-core curl python openssl-devel && yum groupinstall "Development Tools"

• REDIS is needed: http://redis.io/download

Node JS

git clone git://github.com/joyent/node.git

 nodejs]# ./configure 
{ 'target_defaults': { 'cflags': [],
                       'default_configuration': 'Release',
                       'defines': [],
                       'include_dirs': [],
                       'libraries': []},
  'variables': { 'clang': 0,
                 'gcc_version': 44,
                 'host_arch': 'ia32',
                 'node_install_npm': 'true',
                 'node_prefix': '',
                 'node_shared_cares': 'false',
                 'node_shared_http_parser': 'false',
                 'node_shared_libuv': 'false',
                 'node_shared_openssl': 'false',
                 'node_shared_v8': 'false',
                 'node_shared_zlib': 'false',
                 'node_tag': '',
                 'node_unsafe_optimizations': 0,
                 'node_use_dtrace': 'false',
                 'node_use_etw': 'false',
                 'node_use_openssl': 'true',
                 'node_use_perfctr': 'false',
                 'node_use_systemtap': 'false',
                 'python': '/usr/bin/python',
                 'target_arch': 'ia32',
                 'v8_enable_gdbjit': 0,
                 'v8_no_strict_aliasing': 1,
                 'v8_use_snapshot': 'true'}}