ccaspers

 npx eslint src -f compact | awk -F ":" '{print $1}' | uniq | head -n -2 | xargs code -r

ccaspers

Virtual Environments

A Virtual Environment is a tool to keep the dependencies required by different projects in separate places, by creating virtual Python environments for them. It solves the “Project X depends on version 1.x but, Project Y needs 4.x” dilemma, and keeps your global site-packages directory clean and manageable. - The Hitchhiker’s Guide to Python!

Virtual Environments werden also dazu genutzt um verschiedene Softwareprojekte und ihre Abhängigkeiten voneinander zu isolieren. Ein netter nebeneffekt ist, das Installation aus dem Python Package Index (pip) ohne Administratorrechte erfolgen können, weil die Pakete im Verzeichnis des Virtual Environments installiert werden.

Jedes Virtual Environment hat seine eigenen site-packages sowie pip- und python-Kommandos. Dabei wird der Interpreter nicht jedes neu installiert, sondern über Symlinks verknüpft.

Ein Virtual Environment erzeugen

ccaspers

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import multiprocessing as mp
from time import sleep


def task(exit_evt, id):
    while not exit_evt.is_set():
        pass

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#!/bin/bash

# Script for installing tmux on systems where you don't have root access.
# tmux will be installed in $APP_DIR/bin.
# It's assumed that wget and a C/C++ compiler are installed.

# exit on error
set -e

TMUX_VERSION=2.2

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sudo apt-get install xzdec
tlmgr init-usertree
tlmgr install sourcesanspro

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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# revert ALL changes recursively
svn revert -R .

# undo multiple commits
svn merge -c -REV_X,-REV_Y,-REV_Z .
svn commit -m "reverted revisions x, y, z"  

ccaspers

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

ccaspers

Compiling OpenMesh with mingw and cmake on windows

• unpack OpenMesh
• go to OpenMesh folder and create a folder called "build" inside
• open qt-cmd-prompt as administrator (needed to install)
• cmake-gui
• fill in path to source and build-directory
• click Configure and choose mingw-makefiles
• click Generate
• close CMake-Gui and switch back to cmd-prompt
• navigate to build folder

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#!/bin/bash

# .local/bin zu PATH hinzufügen, automatisch bei öffnen des Terminals
# an ~/.bashrc anhängen
echo "export PATH=\$PATH:~/.local/bin" >> ~/.bashrc
#bashrc neu laden
source ~/.bashrc
# setuptools laden und für user installieren
wget https://bootstrap.pypa.io/ez_setup.py -O - | python - --user
#bashrc neu laden