tsangwpx

@ECHO OFF
REM -- Automates cygwin installation

SETLOCAL

REM -- Change to the directory of the executing batch file
CD %~dp0

REM -- Configure our paths
SET SITE=http://mirrors.kernel.org/sourceware/cygwin/

tsangwpx

Situation

System failed to boot with messages:

1. "Failed to run raid array"
2. cache_check is missing/not found

uname -a output:
Linux hostname 4.9.0-3-amd64 #1 SMP Debian 4.9.30-2+deb9u1 (2017-06-18) x86_64 GNU/Linux

Reason

Some kernel modules and binary files were missing in the boot image. They are related to lvmcache if there are LVs backed by dm-cache.

tsangwpx

#!/bin/bash

# Reference: https://gist.github.com/dentechy/de2be62b55cfd234681921d5a8b6be11
# This script is used to automate the installation and configration of openssh-server on Windows Subsystem of Linux.
# The tested platform:
# Windows 10 version 1803
# Debian stretch on WSL

# Change the sshd port if needed
SSH_PORT=22

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function wsl_cd() {
    # This function translate a windows path to unix path and change the current directory to the translated path
    # This make working on WSL more convenient
    local idx=0
    
    local dir="$1"
    local unix=""
    
    # echo "$dir"
    

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import re

class MatchStateMeta(type):
    def __init__(cls, name, bases, ns, *, proxy_methods=(), proxy_properties=()):
        super().__init__(name, bases, ns)

        for name in proxy_methods:
            ns[name].__qualname__ = '%s.%s' % (cls.__qualname__, ns[name].__name__)

    @classmethod

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#!/usr/bin/python3

ids = """
11111111
22222222
33333333
44444444
55555555
66666666
77777777

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"""
Logging with multiprocessing

LogRecord are sent back to the master process

License: MIT
Author: Aaron Tsang

"""

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Sometime Python environment is complicated. For example, python3 from Anaconda but package management with pipenv. Shared libraries were built with different configuration or technically RPATH in ELF.

This is an example:

import matplotlib.pyplot
import numba

ImportError                               Traceback (most recent call last)

tsangwpx

Situation

When I used remote desktop with earphones, there are ghost key press typing "g" periodically.

It turned out related to a process called RAVBg64.exe /SENDINPUT.

I am not sure what is happening. I was using Carbon X1C6 with software downloaded from Lenovo / Windows Update.

Update on 20/09/2019

The issue was fixed in Realtek Audio Rriver with the version 6.0.8777.1 [Link 3]

tsangwpx

See https://docs.python.org/3/library/operator.html for details

Negation (Logical)

not a	True (bool)	False (bool)	True (bool_)	False (bool_)	1 (uint8)	0 (uint8)	1.0 (float)	0.0 (float)	1.0 (float64)	0.0 (float64)
	False (bool)	True (bool)	False (bool)	True (bool)	False (bool)	True (bool)	False (bool)	True (bool)	False (bool)	True (bool)

Bitwise Inversion

~a	True (bool)	False (bool)	True (bool_)	False (bool_)	1 (uint8)	0 (uint8)	1.0 (float)	0.0 (float)	1.0 (float64)	0.0 (float64)
	-2 (int)	-1 (int)	False (bool_)	True (bool_)	254 (uint8)	255 (uint8)

Bitwise AND