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@oconnor663
oconnor663 / bad_git.sh
Created October 4, 2017 17:02
edit a git commit without changing the hash
#! /bin/bash
d="$(mktemp -d)"
# Make a git repo with one file in it.
mkdir "$d/good"
cd "$d/good"
git init
echo good > file.txt
git add -A
@Kartones
Kartones / postgres-cheatsheet.md
Last active May 3, 2024 20:51
PostgreSQL command line cheatsheet

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)