jxu

# https://help.github.com/articles/changing-author-info/

git filter-branch --env-filter '
OLD_EMAIL="wxv@users.noreply.github.com"
CORRECT_NAME="jxu"
CORRECT_EMAIL="7989982+jxu@users.noreply.github.com"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"

jxu

#!/bin/sh
# -n for dry run, --del to delete at dest
# --info and --no-i-r just for showing progress
rsync -avh --del /home/jx --info=progress2 --no-i-r --stats \
  --exclude .local/share/Trash --exclude .cache \
  '/media/jx/Toshiba 2TB/ubuntu_backup_latest' 2> rsync.err

jxu

#!/bin/env python3
# Trying to automate android backups but fed up with bash :(

# TODO: Nicer mode selection?

import os
import subprocess
import sys

SD_DIR = "sdcard1"

jxu

H
He
Li
Be
B
C
N
O
F
Ne

jxu

" Custom vim config with my comments 
" (mostly from the ultimate Vim config amix/vimrc)

" => General
set nocompatible                " Disable compatibility mode
set history=1000                " Save more commands
set autoread                    " Read file when changed externally
set autowrite                   " Autosave before commands like :make
set noswapfile                  " No more .swp!

jxu

# push to new github repo
git remote add origin git@github.com:jxu/repo.git  # use set-url if already set
git push -u origin master

# check out a remote branch
git fetch
git branch -v -a  # list all branches
git switch branchname

# change remote a branch is tracking

jxu

-- Syntax order
-- https://learn.microsoft.com/en-us/sql/t-sql/queries/select-transact-sql

WITH cte AS (cte_query)
SELECT cols
FROM table 
WHERE cond
GROUP BY col
HAVING cond
WINDOW window_expr

jxu

import pandas as pd

### Data import ###

# https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.to_csv.html 
df = pd.read_csv("file.csv")  


### Data types ###

jxu

# Horizontal bar chart, ordered by value
ggplot(df, aes(x = reorder(name, value), y = value)) + 
  geom_bar(stat = "identity") + 
  labs(title = "Title", x = "Name", y = "Value") +
  scale_y_continuous(expand = c(0,0)) + 
  coord_flip() + 
  theme_light()

jxu

x86-32 cdecl

Arguments pushed on stack, right-to-left.

Caller-saved: eax, ecx, edx. All others are callee-saved.

Return value in eax.

General purpose registers:

1. EAX (Accumulator)