Zhenguo Zhang's Blog / Computing
[R] Compute stats on grouped data using dplyr
[R] Create ggplot histograms with y value being fractions
[Jupyter] Connect Jupyter notebook via SSH Tunnel
Setup bash in MacOS
[Git] Git hooks - Part 1
[Github] Gist is essentially git repo
[R] Need import S3 functions for a package to use
[AWS] How to use an IAM role via AWS CLI
[Linux] How to preserve environment variables in `sudo`
[Linux] How to tell a bash script is sourced or executed?