Until now I thought a good way to measure copy performance is to use rsync --progress /a/local /b/local. But… have a look:

znek@creutzfeld:(~/tmp)$ dd if=/dev/urandom of=large1 bs=64M count=64 
64+0 records in
64+0 records out
4294967296 bytes transferred in 82.564186 secs (52019738 bytes/sec)
znek@creutzfeld:(~/tmp)$ time cp large1 /archive/tmp/

real    0m23.915s
user    0m0.016s
sys    0m7.577s
znek@creutzfeld:(~/tmp)$ rm /archive/tmp/large1 
znek@creutzfeld:(~/tmp)$ time rsync large1 /archive/tmp/

real    0m39.464s
user    0m32.478s
sys    0m24.831s
znek@creutzfeld:(~/tmp)$ rsync --version|grep version
rsync  version 3.1.3  protocol version 31

As you can see, for this specific workload rsync is almost twice as slow.

OMEMO is also available for Adium via Lurch4Adium

I like, I like! Latest

I wanted to build Conversations on my macOS box, but never did modern Android stuff before. It turned out it was (quite) simple to do.

(I already had jenv (brew install jenv) and Java 8 (brew cask install java8) installed)

$ jenv global 1.8.0.202 # depends on the exact version you have
$ brew install android-sdk
…
$ yes|sdkmanager --licenses

Afterwards, you can build Conversations using the contained gradle wrapper:

$ ./gradlew assembleConversationsFreeSystemDebug

During signing this bailed, however, due to me having an older version of bouncycastle installed in /Library/Java/Extensions. Version 152 wasn't good enough, but 162 is.

I wanted to reduce the size of scanned images in a PDF which shouldn't be all too hard, but all prominent search results are taken by online PDF compressors which I don't want to use, ever (beware of the clown!). TL;DR: Use a custom quartz filter, see Bessere PDF-Datei-Größenreduzierung in OS X and Mimsy: Quality reduced file size in Mac OS X Preview. Enjoy.