ntrepid8

USB Tips

Helpful info for working with ISO images and USB formatting/partitioning.

Recover if MBR/GPT is corrupted

• https://askubuntu.com/questions/781223/physical-block-size-is-2048-bytes-but-linux-says-it-is-512-when-formatting-a

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ecryptfs-tips

automout home and source profile when SSH login:

• https://askubuntu.com/questions/153807/ecryptfs-and-ssh-pubkey-login-how-automount-and-other-stuff/153815
• https://stephen.rees-carter.net/thought/encrypted-home-directories-ssh-key-authentication

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How to play movie disks on Ubuntu 16.04

To remind me how I got video playback workin on Ubuntu 16.04 for video disks.

DVD

$ sudo apt install vlc libdvd-pkg
$ sudo dpkg-reconfigure libdvd-pkg

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#!/usr/bin/env bash

LOG_PATH="/home/$(whoami)/log/speedtest.log"

if result=$(/usr/bin/speedtest --simple); then
  parsed_result=$(printf "${result}\"" | sed ':a;N;$!ba;s/\n/" /g' | sed 's/: /="/g')
  printf "[$(date)] ${parsed_result}\n" >> "${LOG_PATH}"
else
  printf "[$(date)] error\n" >> "${LOG_PATH}"
  exit 1

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#!/usr/bin/env python
import fileinput
import datetime

input_lines = []
for line in fileinput.input():
    input_lines.append(line)

ping_key,ping_val,ping_unit = input_lines[0].split(" ")
download_key,download_val,download_unit = input_lines[1].split(" ")

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#!/usr/bin/env bash

DATE_TAG="$(date -u +"%Y")-$(date -u +"%m")"
CSV_PATH="/home/$(whoami)/log/speedtest.$(hostname).${DATE_TAG}.csv"
LOG_PATH="/home/$(whoami)/log/speedtest.$(hostname).${DATE_TAG}.csv.log"

# ensure the path exists
mkdir -p $(dirname "${CSV_PATH}")

# add the header row if the file does not exist

ntrepid8

LXC/LXD Notes

Some notes on how to install and configure lxc/lxd containers.

Read the 'getting started' docs first:

• https://linuxcontainers.org/lxd/getting-started-cli/

Lots of good examples:

• https://stgraber.org/2016/03/11/lxd-2-0-blog-post-series-012/

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Rsync via SSH

Use rsync via ssh to transfer large files or groups of files. It even has a progess bar :)

Push file(s):

$ rsync -avz -e "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" --progress --delete \
"$LOCAL_PATH" "$REMOTE_USER@$REMOTE_HOST:$REMOTE_PATH"

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tar xz tips

Compress a directory using multiple threads and show a progress bar with this script:

#!/usr/bin/env bash

# example: tar_cJf.sh ./directory > directory.tar.xz

SOURCE="$1"

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#!/usr/bin/env python3
import os
import subprocess

cwd = os.getcwd()
file_list = [f for f in os.listdir(cwd) if f.endswith('.sublime-project')]
fl_len = len(file_list)

if fl_len == 0:
    print("sublime-project file not found")