Prepare Environment
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Create user and group

Please run the following command as user root.
# groupadd arch
# useradd -c "ESSArch System Account" -m -g arch arch

Set password for arch user

Please run the following command as user root.
# passwd arch
Changing password for user arch.
New UNIX password: password
Retype new UNIX password: password

Customize user environment for arch user

Add the following rows to /home/arch/.bash_profile:

### ESSArch Core start
##
export PATH=/ESSArch/pd/python/bin:/ESSArch/pd/libxml/bin:/ESSArch/pd/libxslt/bin:$PATH:/usr/sbin
export LANG=en_US.UTF-8
export LD_LIBRARY_PATH=/ESSArch/pd/python/lib:/ESSArch/pd/libxslt/lib:/ESSArch/pd/libxml/lib:$LD_LIBRARY_PATH
export EC=/ESSArch/pd/python/lib/python2.7/site-packages
export EC_PYTHONPATH=$EC:/ESSArch/config
export PYTHONPATH=$EC_PYTHONPATH
export DJANGO_SETTINGS_MODULE=config.settings
alias log='cd /ESSArch/log'
##
### ESSArch Core end

Create installation directory

Please run the following command as user root.
# mkdir /ESSArch
# chown -R arch:arch /ESSArch