custom aliases to shorten the unix commands. Make a file ~/.bash_aliases and source the ~/.bashrc file.

.bash_aliases

alias cls='clear'
alias pag='ps aux | grep'
alias nreload='sudo servince nginx reload'
alias nstop='sudo service nginx stop'
alias nstart='sudo servince nginx start'
alias nrestart='sudo service nginx restart'
alias ebe='ember build --environment='
alias chmodx='sudo chmod +x'
alias epreprod='RAILS_ENV=pre_prod'
alias eprod='RAILS_ENV=production'
alias efeature='RAILS_ENV=feature'
alias edevelopment='RAILS_ENV=development'
alias rc='rails c'
alias rau='rake activate:users'
alias killsk='ps -ef | grep sidekiq | grep -v grep | awk '{print $2}' | xargs kill -9'
alias startskinprod='bundle exec sidekiq -C ./config/sidekiq.yml -e production -d'
alias startskinpreprod='bundle exec sidekiq -C ./config/sidekiq.yml -e pre_prod -d'

alias nstart='sudo servince nginx start'

Spelling of service is wrong.