Laur IVAN

Fix standard_init_linux.go:XXX: exec user process caused “no such file or directory” Error

TL;DR: Use dos2unix While switching from Ubuntu to Alpine images, I’ve encountered the fillowing error: standard_init_linux.go:195: exec user process caused “no such file or directory” Quite unfortunate, because the script stayed in the same spot and only the image changed. After reading a bunch, I figured that it’s the fact that I’m editing on Windows and Alpine doesn’t seem to interpret #/bin/sh properly – adding a ^M :). The solution is to either fix the script locally or to format it as part of the docker build process. I chose…read more

Sep.23

Redis on Windows – Save RDB but Not Able to Persist

Posted by laur in IT, Tutorial

TL;DR: My windows service wasn’t installed properly. Change the config file to point the DB to an accessible directory and reinstall the service. When trying to build a perioduc Celery task, I got the following error with Redis on Windows (running as a windows service): redis.exceptions.ResponseError: MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error. This is quite unfortunate because the error doesn’t show…read more

Sep.22

Run Celery 4.1.0 on Windows 10

Posted by laur in Software, Tutorial

TL;DR: Use set FORKED_BY_MULTIPROCESSING=1 on the worker script/shell When running Celery on Windows 10, I got the following error: ValueError: not enough values to unpack (expected 3, got 0) This is quite unfortunate as Windows is supported on “best effort”. A pull request has a change, but it’s not pretty to patch an installation. To get around, you can just define an environment variable:

set FORKED_BY_MULTIPROCESSING=1

1	set FORKED_BY_MULTIPROCESSING=1

I only defined it on the worker’s side. HTH, A little experiment: If you find this post and ad below useful, please check the ad…read more

Sep.21

Use Docker Behind Proxy on Windows 8

Posted by laur in Software, Tutorial

The other day I had to install Docker at work, aka behind a corporate proxy (on Windows 8). While the docker installer is stand-alone and all is good, dealing with the VM is a different matter… The problem popped up when I tried to create a Django image and pip install failed miserably. To get around, you need to create a docker machine:

docker-machine create -d virtualbox \
    --engine-env HTTP_PROXY=http://example.com:8080 \
    --engine-env HTTPS_PROXY=https://example.com:8080 \
    --engine-env NO_PROXY=example2.com \
    default

docker-machine create -d virtualbox \

--engine-env HTTP_PROXY=http://example.com:8080 \

--engine-env HTTPS_PROXY=https://example.com:8080 \

--engine-env NO_PROXY=example2.com \

default

You also need to pass in the proxy as a build argument to build:

docker build --build-arg https_proxy="http://example.com:8080"

1	docker build --build-arg https_proxy="http://example.com:8080"

You can also pass the build argument to docker-compose but, in…read more

Sep.12

Check Computer Started without Admin Provileges

Posted by laur in IT, Tutorial

TL;DR: open the Event viewer, select the Windows Logs > System and Filter Current Log to the desired interval. Or you can scroll to the earliest entry of the day you need (more irritating because the event window doesn’t refresh when scrolling). The other day I needed to find out when an user logged in on a computer. Unfortunately, this info is only available with admin privileges, which the user did not have. So, knowing the user was the one that started the computer on the day, the next best…read more

Mar.04

Convert m4a to mp3 Using Ffmpeg on Windows (and Git Bash)

Posted by laur in IT, Tutorial

Here’s a simple command line to convert m4a files to MP3 on windows:

for i in *.m4a; do ./ffmpeg.exe -i "$i" "${i%.m4a}".mp3; done

1 2	for i in *.m4a; do ./ffmpeg.exe -i "$i" "${i%.m4a}".mp3; done

HTH, A little experiment: If you find this post and ad below useful, please check the ad out :-)

Jan.19

Copy File from Local Desktop to Remote Resktop Connection

Posted by laur in IT

TL;DR: Drag-and-drop doesn’t work. Copy&paste does! Before yesterday, my way of moving files between my local desktop and a remote one using MS Remote Desktop Connection involved a 3rd party service like Dropbox or email. Then, a kind soul took pity on me and showed me the proper way. In his words: Drag and drop doesn’t work but copy/paste does. Simple, but veeerrryyy effective! Note I’ve only tried this so far between 2 MS Windows machines, with some large-ish (30M) files. A little experiment: If you find this post and…read more

Nov.18

Use Git Bash as Integrated Terminal in VS Code

Posted by laur in Software, Tutorial

TL;DR:: Install windows git to get bash and add “C:\\Program Files\\Git\\bin\\bash.exe” to “terminal.integrated.shell.windows” in VS Code’s user settings. As I’m trying my hand at developing a node application today, I’m getting frustrated by the Terminate batch job (Y/N) every time I need to restart a script: Since previously I was developing on linux/macOS, I’m used to bash and I figured that it would be nice to have the bash shell in VS Code’s embedded terminal. One of the painless ways to have bash on your system is to install git…read more

Aug.23

Migrate Chromium and Keep all Settings

Posted by laur in IT, Tutorial

TL;DR: Backup App Data\Local\Chromium on your old machine, copy it to your new one and uncompress (in the same place), install Chromium, profit. With the migration to a new computer, I’ve managed to keep all my Chromium settings. The steps I did are the following: On the old computer Note the chromium version you’ve installed Go to App Data\Local Archive the Chromium directory Note: this might be huge! To reduce it, clean the Chromium\User Data\Default\Cache Note the plugins (optional) – this might be useful if you have plugins depending on…read more

Apr.14

Avoid Typing Password on Git Every Time on Windows

Posted by laur in IT

Today I’ve updated Android Studio and, when I wanted to fetch stuff from git, it failed (connection issues). Initially, I thought it was because I’m behind a proxy, but all proxy settings were working OK (unchanged, also command line worked just fine). Apparently, the git plugin doesn’t ask (anymore?) for a password… So, I need a way to allow me not to type in the password every time (while still using https as protocol). There are more ways to solve the problem: Put the passowrd in the URL. This is…read more