ChristopherA

Zsh Opinionated - A Guide to Best Practices

• Abstract: This guide provides best practices for writing clear, maintainable, and robust Zsh scripts. Aimed at helping developers transition from Bash to Zsh, particularly on macOS, this guide offers practical advice and examples for creating standardized and efficient scripts.

• Copyright This text of this guide is Copyright ©️2024 by Christopher Allen, and is shared under spdx:CC-BY-SA-4.0 open-source license. All the example code is relenquished to the public domain under spx:CC0-1.0.

• Tags: #zsh #scripting #cli #opinionated

digitalsignalperson

mkfifo /tmp/gfifo

./xdp-screen-cast-ffmpeg.py &  # or run in another terminal
# Note the gstreamer pipeline
# 'pipewiresrc fd=%d path=%u ! videorate ! video/x-raw,framerate=60/1 ! videoconvert ! filesink location=/tmp/gfifo'
# I specified a 60/1 frameerate. You can do other pre-processing here, or offload it to ffmpeg.

# Encode the stream and pipe to netcat
# note: must specify correct resolution here
# we can now use h264_nvenc, mpegts, and anything else ffmpeg has

johnnypea

# Run the last command as root
sudo !!
# Serve current directory tree at http://$HOSTNAME:8000/
python -m SimpleHTTPServer
# Save a file you edited in vim without the needed permissions
:w !sudo tee %
# change to the previous working directory
cd -
# Runs previous command but replacing
^foo^bar

mattmc3

zstyle booleans

Setup foo,bar,baz boolean vars

zstyle ':example:foo' doit yes
zstyle ':example:bar' doit no
# leave baz unset

shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8