Reference:
sudo fdisk -l
Reference:
sudo fdisk -l
/** | |
* USB HID Keyboard scan codes as per USB spec 1.11 | |
* plus some additional codes | |
* | |
* Created by MightyPork, 2016 | |
* Public domain | |
* | |
* Adapted from: | |
* https://source.android.com/devices/input/keyboard-devices.html | |
*/ |
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)import requests | |
from tqdm import tqdm | |
def download(url: str, fname: str, chunk_size=1024): | |
resp = requests.get(url, stream=True) | |
total = int(resp.headers.get('content-length', 0)) | |
with open(fname, 'wb') as file, tqdm( | |
desc=fname, | |
total=total, |
Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.
git revert {commit_id}
Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:
The [RFC for a new simple to use password hashing API][rfc] has just been accepted for PHP 5.5. As the RFC itself is rather technical and most of the sample codes are something you should not use, I want to give a very quick overview of the new API:
Everybody knows that you should be hashing their passwords using bcrypt, but still a surprising number of developers uses insecure md5 or sha1 hashes (just look at the recent password leaks). One of the reasons for this is that the crypt() API is ridiculously hard to use and very prone to programming mistakes.
curl
to get the JSON response for the latest releasegrep
to find the line containing file URLcut
and tr
to extract the URLwget
to download itcurl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \
This gist is an ES module which provides functions to import and export data from an IndexedDB database as JSON. It's based on Justin Emery's indexeddb-export-import
package, but applies some adjustments that reflect better on the current browser landscape (i.e. better developer ergonomics but no support for Internet Explorer).
For each of the provided functionalities, you need a connected IDBDatabase
instance.
import { idb } from 'some-database'