andyneff

#!/usr/bin/env bash

#****f* git/submodule_diff
# NAME
#   git_submodule_diff - show commit diff between expected and current submodule
# DESCRIPTION
#   When changing version of a superproject, submodules will often show up as
#   being different. Often the right answer is to run "git submodule update".
#   However, sometimes this is not the right answer. It is tedious to switch to
#   a submodule, look through the logs for the SHAs in question, and understand

andyneff

#!/usr/bin/env bash

set -eu

TMP_DIR="$(mktemp -d)"
python3 <(curl -L https://bootstrap.pypa.io/get-pip.py) --no-cache-dir -I --root "${TMP_DIR}" virtualenv
sudo env PYTHONPATH="$(cd "${TMP_DIR}"/usr/local/lib/python*/*-packages/; pwd)" "${TMP_DIR}/usr/local/bin/virtualenv" "/usr/local/pipenv/"
sudo /usr/local/pipenv/bin/pip install --no-cache-dir pipenv
sudo ln -s /usr/local/pipenv/bin/pipenv /usr/local/bin

andyneff

#!/usr/bin/env python

import os
import sys
from subprocess import Popen, PIPE
from socket import *
import atexit
from select import select

from logging import getLogger, basicConfig

andyneff

Indirection

Setting a variable

1. A "local" variable, that will be local to the function

var=foo
value="b a  r"
declare "${var}=${value}"

andyneff

#include <unistd.h>
#include <stdio.h>
#include <time.h>

// This should be easy to edit in a hex editor
char exe[256]="/bin/ls\0HEXEDIT STRING HERE";

int main(int argc, char* argv[])
{
  FILE *fid = fopen("/tmp/rnuril_log.txt", "a");

andyneff

Git Mirror with submodules

While creating a git mirror is as simple as git clone --mirror, unfortunately this git command does not support git submodules (difficult) or lfs (easier). These scripts help in creating a mirror of a project with submodule and/or git lfs.

General user case:

1. You have a git repo with submodule on a git server
2. git_mirror https://github.com/visionsystemsinc/vsi_common.git master, recursively create mirrors of all submodule currently in the master branch.
3. Transfer vsi_common_prep/transfer_{date}.tgz to your destination

andyneff

# Usage:
# Move your virtualenv, then
# {virtual env dir}\Scripts\python.exe relocate.py
# TODO: Merge with Linux script
# TODO: Detect and hangle GUI exes

import sys
import os
import glob
import re

andyneff

Using cygwin X in WSL1 and MingW (and others)

Cygwin comes with an X Server that can be useful with tools other than Cygwin itself. With a few modifications, we can add cygwin's X Server support to other shell implementations including cygwin, mingw64 (such as git for windows), msys2, WSL1, WSL2, and others.

With a few minor modifications, we can save the DISPLAY variable to files accessible by any shell. Once the DISPLAY value is accessible, an rc file can load it and it will automatically be used.

Optionally, we can even add a "one click" link to the start menu to start the xserver

TL;DR

andyneff

#!/usr/bin/env bash

# Usage: bash <(curl -L https://git.io/Jfr1J)
#    or: bash <(wget -O - https://git.io/Jfr1J)
#    or: bash <(perl -MLWP::Simple -e "getprint 'https://git.io/Jfr1J'")
#    or: bash <(python -c $'try:\n import urllib2 as u\nexcept:\n import urllib.request as u\nimport os; os.write(1,u.urlopen("https://git.io/Jfr1J").read())')

function gotty_main()
{
  : ${VERSION=2.0.0-alpha.3}

andyneff

1. Install readline: e.g. apk add --no-cache readline
2. Reload readline: Ctrl+x, Ctrl+r
3. There is no step 3