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openssl s_client -showcerts -connect server.edu:443 </dev/null 2>/dev/null|openssl x509 -outform PEM >mycertfile.pem

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# For big dumps:
mysqldump -h <host> -u <user> -p --net_buffer_length=1M --quick <database> <table> > <dump>.sql

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import os
import subprocess
from shutil import copyfile


def main():

    src = '/tmp/src'
    dest = '/tmp/dest'
    size_dir = 190

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nmap --script ssl-enum-ciphers -p 443 example.org

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$ git rm --cached giant_file
# Stage our giant file for removal, but leave it on disk

Commit this change using --amend -CHEAD:

$ git commit --amend -CHEAD
# Amend the previous commit with your change
# Simply making a new commit won't work, as you need
# to remove the file from the unpushed history as well

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set -a; source ~/example.env; set +a

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$ dig @resolver1.opendns.com ANY myip.opendns.com +short

curl -s http://whatismyip.akamai.com/

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# local_settings.py

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'file': {
            'level': 'DEBUG',
            'class': 'logging.FileHandler',
            'filename': '/tmp/debug.log',

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chmod 700 ~/.ssh
chmod 600 ~/.ssh/*

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docker-compose -f docker-compose-test.yml run --rm --service-ports --use-aliases app