conda_shortcuts.txt

Install a lot of Data science packages at once (They bring in lot of dependencies with them)
  conda install pandas seaborn notebook scikit-learn lxml json requests
  
Update all conda environments at once in Linux (except base) 
  for env in $(conda env list | cut -d" " -f1 | tail -n+4); do conda update -y -n $env --all; done
for base, do as follows
  conda update -y -all -n base

Update all conda environments at once in Windows 10 (Using Anaconda Poweshell prompt) 
  conda env list | %{$_.split(' ')[0];} | Select-String -notmatch '#' | %{conda update -y -n $_ --all}