Rolf Dergham rolfen

This little script resumes an interrupted dd copy at a given offset.

Before resuming, it rolls back (the amount of roll-back is OVERLAP_SIZE * CHUNK) then calculate the checksum of the overlap on both files to make sure that they are valid images of each other.

The checksums have to be checked manually by the operator (todo: automate).

Setting up multiple user write permission to WWW directory

addgroup www-admin
adduser joe
adduser www-admin joe
setfacl -R -m g:www-admin:rwx /var/www
setfacl -R -m -d g:www-admin:rwx /var/www
chmod -R g+s /var/www

Warning These are for educative purposes (examples, tips, etc.). Do not blindly execute them.

Fix double separator in hash-file (double or more space -> single space)

cat meta/hash-file.list | sed -E 's/^(\S+)\s{2,}(\S.+)$/\1 \2/'

Fix windows newlines in file

You will need to connect your phone first, using USB.

With the USB cable:

adb tcpip 5555

Find out the IP address of your phone

De	En
störrischer	stubborn
bemühunngen	efforts
vorübergehend	temporarily
verdrangen	to displace
Einschätzung	assessment
fällig	due
Gegenstand	object
Reichweite	reach

Follow this:

https://thomas-leister.de/en/mailserver-debian-stretch/

Notes: See this section DKIM is a single domain setup. For multiple domains we need multiple DKIM keys. In /etc/rspamd/local.d/dkim_signing.conf, we would rather need something like this (source):

path = "/var/lib/rspamd/dkim/$domain.$selector.key";

Exporting multiple blobs from an SQL database.

This is tested for MySQL with Linux or OSX

I was in a situation where I had images saved into an SQL table, as "blobs" and needed to export them into proper jpg files.

This relies on the SQL syntax SELECT INTO DUMPFILE. However this command can only export one row at a time.

	#!/bin/bash

	# Import and organize into subfolders by date taken (YYYY/MM/DD)

	scriptname=`basename "$0"`

	if [[ $# -ne 2 ]]; then
	echo "Usage: $scriptname /source/dir /archive/dir"
	else
	(cd "$2"; exiftool -progress -ext MTS -ext ARW -ext ORF -ext xmp -r -m -d %Y/%m/%d "-Directory<DateTimeOriginal" "$1")

	Sometimes drop-down or contextual menus appear at the wrong position on the screen.
	Upon moving the parent window, it appears that the menu position is not updated. They still appear at the same position.

	To reproduce with affected applications, open app, open drop-down menu, move app window, open same drowpdown menu - observe that the menu has not moved with the window and is subsequently now appearing at a wrong position.
	If the window is resized, the menus get re-aligned.

	Weston 3.0.0
	(running in DRM mode)

	There is such a bug in sway too. But over there it seems to affect everything (pcmanfm, lxterminal, subl, chromium...)

Rolf Dergham rolfen

Fix double separator in hash-file (double or more space -> single space)

Fix windows newlines in file

Exporting multiple blobs from an SQL database.

1. Get the IDs of the rows we want to export