Categories - Linux

23 posts in total

Linux | setfacl | getfacl | ACL 文件访问控制列表

Linux | Linux 權限詳解（chmod) getfacl getfacl 指令來自英文詞組 get file access control list 的縮寫，其功能是顯示檔案或目錄的ACL策略。對指定的檔案或目錄進行精確的權限控制，FACL（File Access Control List，檔案存取控制清單）一定是不二之選 1234567 $ getfacl maxmin.py#

2025-09-29

Linux

#HPC #shell script #Linux #Terminal #chmod

Linux | Python Template

Template for a Python script that includes logging and argparse. You can use this as a starting point for your projects: 1234567891011121314151617181920212223242526272829303132333435363738394041424344

2025-07-23

Linux

#python #template

Linux | xrags

xargs（eXtended ARGuments）是給指令傳遞參數的一個篩選器，也是組合多個指令的一個工具。 xargs 可以將管道或標準輸入（stdin）資料轉換成命令列參數，也能夠從檔案的輸出中讀取資料。 xargs 也可以將單行或多行文字輸入轉換為其他格式，例如多行變單行，單行變多行。 xargs 預設的指令是 echo，這表示透過管道傳遞給 xargs 的輸入將會包含換行和空白，不過透過

2025-05-27

Linux

#HPC #shell script #Linux #Terminal #xrags

Linux | Linux 權限詳解（chmod)

在Linux系統中，檔案權限受到嚴格控制，進行特定操作時必須擁有相應的權限才能成功執行。 Linux中的檔案權限類型主要包括讀取、寫入和執行，分別用字母 r、w、x 表示。權限的層級分為擁有者、群組和其他用戶。每個檔案可以針對這三個層級設置不同的 rwx（讀寫執行）權限。通常，一個檔案只能屬於一個使用者和一個群組。如果其他使用者需要訪問該檔案的權限，可以將其加入擁有權限的群組，並且一個使用者

2025-05-14

Linux

#HPC #shell script #Linux #Terminal #chmod

Linux | NWP | Google launches free IDX cloud hosting service

Google 推出了 IDX 免費雲端主機服務，其硬體配置相當出色，配備： 16核心CPU 64GB記憶體 300GB SSD固態硬碟網路頻寬最高可達2-5Gbps IDX（Integrated Development Experience 是Google為開發者設計的雲端開發平台。該平台提供的免費雲端主機，旨在為開發者創造便利的學習和測試環境。用戶無需進行複雜的環境設置，也不需要綁定信用

2025-04-25

Linux

#NWP #HPC #WRF #MPAS #Linux #Google

Linux | ffmpeg

FFmpeg FFmpeg 是一個開放原始碼的自由軟件，可以執行音頻和視像多種格式的錄影、轉檔、串流功能，包含了libavcodec ——這是一個用於多個專案中音頻和視像的解碼器函式庫，以及libavformat——一個音頻與視像格式轉換函式庫。該專案的名稱靈感來源於 MPEG 影片標準組織，其中「FF」代表「快進」（fast forward），因此FFmpeg代表「快進動態圖像專家組」。其標誌是

2024-12-02

Linux

#ffmpeg

Linux | Terminal Command

Linux 12345678910111213141516171819202122232425262728# -m displays percentages# -N displays line numbers# -i ignores case when searching# h Display the help interface# Q quits less commandless -miN fi

2024-10-15

Linux

#HPC #shell script #bashrc #Linux #Terminal

Singularity (Apptainer) Container

What is Singularity Singularity is a container platform to run complex applications on HPC clusters in a simple, portable, and reproducible way. It supports Docker images and is an alternative to Dock

2024-09-21

Linux

#NWP #HPC

ssh tunnel

Introduction to SSH Tunnels Secure Shell, or SSH, is used to create a secure channel between a local and remote computer. While SSH is commonly used for secure terminal access and file transfers, it c

2024-07-04

Linux

#ssh

ssh setup

The Secure Shell Protocol (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. Its most notable applications are remote login and command-line e

2024-06-05

Linux

#ssh

VSCode with Markdown editor

Working with Markdown files in Visual Studio Code is simple, straightforward, and fun. Besides VS Code's basic editing, there are a several Markdown-specific features that help you be more productive.

2024-05-29

Linux

#editor #Markdown #VSCode

Conda/Micromamba

The easiest way to export a .yml file from a conda environment is to first activate your environment by running: 1conda activate myvenv And then run the following command that generated your .yml file

2024-03-02

Linux

#conda #Micromamba

bashrc

If you spend a lot of time on the command line, chances are that you’ll want to customize your shell environment. This can mean creating aliases, adding a new directory to the $PATH , or changing the

2024-03-02

Linux

#bashrc

vim | vimrc

.vimrc setup 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798

2023-10-20

Linux

#HPC #vim #editor

Removing PDF protected mode

Removing PDF usage restrictions, view qpdf, 12$ sudo apt install qpdf$ qpdf --decrypt restricted-input.pdf unrestricted-output.pdf

2023-06-24

Linux

#PDF

rsync - Transferring and synchronizing files

rsync rsync (remote sync) 是Unix下的一款套用軟件，它能同步更新兩處電腦的檔案與目錄，並適當利用差分編碼以減少數據傳輸量。rsync中的一項同類軟件不常見的重要特性是每個目標的鏡像只需傳送一次。rsync可以拷貝／顯示目錄內容，以及拷貝檔案，並可選壓縮以及遞歸拷貝。在常駐模式（daemon mode）下，rsync預設監聽 TCP埠 873，以原生rsync傳輸協定或

2023-06-24

Linux

#download

Intel OneAPI

Intel OneAPI The Intel oneAPI HPC Toolkit is a comprehensive suite of development tools that make it fast and easy to build modern code that gets maximum performance out of the newest Intel® processor

2023-05-06

Linux

#HPC #WRF

Tmux terminal multiplexer

Tmux terminal multiplexer tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue

2023-05-01

Linux

#HPC #terminal #tmux

Bash & Oh-My-Bash

Bash & Oh-My-Bash Ref: 配置安装oh-my-bash https://github.com/ohmybash/oh-my-bash plugins Themes Oh My Bash works best on macOS and Linux. Unix-like operating system (macOS or Linux) curl or wget sh

2023-05-01

Linux

#HPC #shell script #bashrc

neovim

neovim Git neovim Installation 12345678910git clone https://github.com/neovim/neovimcd neovim make CMAKE_BUILD_TYPE=Releasegit checkout stablerm -r build/ # clear the CMake cache# To install the exec

2023-05-01

Linux

#HPC #vim #editor