erriapo

Restart/reset USB kernel module in Ubuntu 18.04 without rebooting

Restart USB ports after a power overdraw (error -110). Unplug all devices prior to running script.

References:

• https://davidjb.com/blog/2012/06/restartreset-usb-in-ubuntu-12-04-without-rebooting/
• https://ubuntuforums.org/showthread.php?t=1460790&p=9162799#post9162799

erriapo

Avoiding padding errors with Python's base64 encoding

>>> import base64
>>> data = '{"u": "test"}'
>>> code = base64.b64encode(data)
>>> code
'eyJ1IjogInRlc3QifQ=='

erriapo

"A little bit of slope makes up for a lot of y-intercept"

01/13/2012. From a lecture by Professor John Ousterhout at Stanford, class CS140

Here's today's thought for the weekend. A little bit of slope makes up for a lot of Y-intercept.

[Laughter]

erriapo

from django.db.models.signals import post_init

def track_data(*fields):
    """
    Tracks property changes on a model instance.
    
    The changed list of properties is refreshed on model initialization
    and save.
    
    >>> @track_data('name')

erriapo

Add this in your ini file:

[alembic:exclude]
tables = spatial_ref_sys

In env.py:

def exclude_tables_from_config(config_):
    tables_ = config_.get("tables", None)

if tables_ is not None:

erriapo

This is copy of Debugging with ipython and ipdb.

Debugging with ipython and ipdb

Make sure you have setuptools installed

• http://pypi.python.org/pypi/setuptools/
• Try to run which easy_install
• Should return something like: /usr/local/share/python/easy_install

erriapo

https://askubuntu.com/questions/623038/rotate-nohup-output
http://jdebp.eu./FGA/do-not-use-logrotate.html

erriapo

$ cat openssl.cnf

[ req ]
default_bits       = 2048
distinguished_name = req_distinguished_name
x509_extensions = v3_ca

[ req_distinguished_name ]

erriapo

#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1

erriapo

// https://docs.python.org/3/library/functions.html#func-range
package main

import (
	"fmt"
)

type Range struct {
	Step  int32
	Max   int32