lym

$ mkdir /opt/google/chrome/plugins;					# and cd into it

$ sudo apt-get install icedtea-6-plugin					# install icedtea, depending on your open-jdk version, of course.

$ sudo ln -s /usr/lib/jvm/java-6-openjdk/jre/lib/i386/IcedTeaPlugin.so	# create symbolic link, depending on your processor architecture
									# that's it, start/restart chrome and you're off :-)

lym

SELECT d.datname as "Name",
pg_catalog.pg_get_userbyid(d.datdba) as "Owner"
FROM pg_catalog.pg_database d
WHERE d.datname = 'database_name'
ORDER BY 1;

lym

# With manage.py
$ env/bin/python manage.py shell

# Without manage.py
$ export DJANGO_SETTINGS_MODULE=[module containing your settings]
$ env/bin/python
>>> import django
>>> django.setup()

lym

$ sudo -i
# apt-get clean
	
# cd /var/lib/apt
	
# mv lists lists.old
	
# mkdir -p lists/partial
	
# apt-get clean

lym

$ uname -r                                          # to get the current functional kernel
$ dpkg --list | grep linux-image                    # use your imagination.
$ sudo apt-get purge linux-image-x.x.x.x-generic    # or whatever the name of the version you want to uninstall is.

lym

def _check_meter_image(self, meter_image):  # meter_image is a base64-encoded string
        err_msg = 'Please take a photograph of the meter'
        if meter_image:
            pre_img     = base64.encodestring(bytearray(meter_image, 'utf8'))
            pre_img2    = base64.decodestring(pre_img)
            img_file    = io.BytesIO(pre_img2)
            img         = Image.open(img_file)
            print(img.filename)
            if img.format == 'JPEG':
                return True

lym

#!/usr/bin/env ruby

require 'english'
require 'rubocop'

ADDED_OR_MODIFIED = /A|AM|^M/.freeze

changed_files = `git status --porcelain`.split(/\n/).
    select { |file_name_with_status|
      file_name_with_status =~ ADDED_OR_MODIFIED

lym

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

lym

I was trying to reinstall High Sierra on an older MacBook Air using internet recovery and I kept on getting an error message when trying to reinstall High Sierra.

The recovery server could not be contacted

It appears that this has to do with the time on the machine not being synchronized, so when the MacBook tries to reach out to the recovery server the certificates do not validate and we get this useless error message.

To fix this.

1. Open up a Terminal from the utilities menu
2. Enter the following command

lym

mkdir /tmp/.X11-unix && sudo chmod 1777 /tmp/.X11-unix && sudo chown root /tmp/.X11-unix/