Thursday, April 28, 2022

20220428 LDAP query

Download and install Remote Server Administration Tools for Windows 10

  • https://www.microsoft.com/en-us/download/details.aspx?id=45520

Open up a Powershell console and use Active Directory cmdlets

  • https://docs.microsoft.com/en-us/powershell/module/activedirectory/?view=windowsserver2022-ps

Examples:

Get-ADUser -Identity "username"

  • get basic user info

Get-ADPrincipalGroupMembership username| select name

  • get all groups that a user belongs to


Get-ADGroup

Get-ADGroupMembers



Wednesday, March 30, 2022

20220330 powershell configure pagefile.sys

 Only for Powershell 5

Get-Volume; $pagefile = Get-WmiObject Win32_ComputerSystem -EnableAllPrivileges; $pagefile.AutomaticManagedPagefile = $false; $pagefile.put(); $pagefileset = Get-WmiObject Win32_pagefilesetting; $pagefileset.InitialSize = 1024; $pagefileset.MaximumSize = 8339; $pagefileset.put();Gwmi win32_Pagefilesetting | Select Name, InitialSize, MaximumSize; restart-computer -force


Monday, March 1, 2021

Youtube mp3/mp4 download

https://github.com/ytdl-org/youtube-dl/blob/master/README.md#readme

on Windows PC

start CMD.exe

type wsl

sudo apt update

sudo apt install youtube-dl

youtube-dl -x --audio-format mp3 --embed-thumbnail -o "%(playlist_index)s-%(title)s.%(ext)s" URL


yt-dlp -f "bestaudio[ext=m4a],bestaudio[ext=webm]" -x --audio-format mp3 --audio-quality 0 -o "%(playlist)s%(playlist_index)03d %(title)s.%(ext)s" URL


yt-dlp -f 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best' -S vcodec:h264 --windows-filenames --restrict-filenames --write-auto-subs --sub-lang "en.*" --embed-subs --add-metadata --add-chapters --no-playlist -N 4 -ci --verbose --remux-video "mp4/mkv" URL


Download MIT class

yt-dlp -f "bestaudio[ext=m4a],bestaudio[ext=webm]" -x --audio-format mp3 --audio-quality 0 -o "%(playlist)s/%(titles)s.%(ext)s" "https://www.youtube.com/watch?v=wWnfJ0-xXRE&list=PLyQSN7X0ro203puVhQsmCj9qhlFQ-As8e"

Friday, January 29, 2021

20210129 mac mini m1 laptop

mac mini把电源模块改成电池可行吗? - 知乎
https://www.zhihu.com/question/432675947/answer/1683427375

版权属于知乎和原作者

先放图,可行.
12月份拿到机器之后没多久就手痒将原装电源拆下来,改成type c供电.主要是给PD诱骗器画了个固定件然后3d打印出来.用诱骗器直接向PD电源诈骗20v,然后再降压到12v供给主板.


后来觉得这么大个机箱,主板才这么点大小,干脆塞一组电池进去算了,当个UPS不香吗

然后就换了个电源管理板子,再塞了4颗三星50e进去,刚好能塞满了整个机箱.

给电池画了支架,能刚好扣在风扇的固定柱上
因为赶着要用,电池组在最后装的时候手上没有高温胶带,就随便找了卷胶布包的像个粽子一样,反正能用就不管美观了,不炸就行23333.
风扇装上去之后是这个样子的.
能用就行.jpg塞进去的电池能量在70Wh左右,Mac mini满载功耗加上屏幕和ssd我测了一下在40w左右,理论上能满载续航一个半小时.当然了我平时把这组电池当UPS用,电池电压会调成单节4v停充,避免长时间满电搞坏电池.缺点嘛,没法在系统里面看电量,外部断电的时候也没有报警装置,用起来的时候还是有点怕怕的,只是我应对的都是短时间断电就没所谓了.另外折腾成这个样子保修估计悬了.


Parts:
* 诱骗器PD23.0转DC100W直流20V触发转接USBC笔记本T12供电改Type-C

* LM5118模块 自动升降压模块 大功率电源模块 高效率电源模块

* 三星 21700 50G 50E 低内阻锂电池 充电宝手电筒适用 拆机

* 铅蓄锂电池充电24V19V12v9V5V10A移动电源直流UPS不间断电源模块



改装DIY升级苹果 MAC mini Macbook 线性电源 专用滤波模组接口板

Mod a Mac Mini for DC Power
Battery is NP-L7S

2018 Mac Mini power supply wiring

Connector