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PostgreSQL list of commands

PostgreSQL, or Postgres, is an object-relational database management system that utilizes the SQL language. PSQL is a powerful interactive terminal for working with the PostgreSQL database. It enables users to execute queries efficiently and manage databases effectively. Here, we highlight some of the most frequently used PSQL commands, detailing their functionalities to enhance your PostgreSQL experience. Top PSQL Commands in PostgreSQL Here are the top 22 PSQL commands that are frequently used when querying a PostgreSQL database: Serial No.CommandDescription1 psql -d database -U user -W Connects to a database under a specific user 2 psql -h host -d database -U user -W Connect to a database that resides on another host 3 psql -U user -h host "dbname=db sslmode=require" Use SSL mode for the connection 4 \c dbname Switch connection to a new database 5 \l List available databases 6 \dt List available tables 7 \d table_name Describe a table such as a column, type, modifiers of c...

How to deply Ollama & open web-ui on your laptop

How to deploy Ollama  Installation: Download Ollama:   Get the Ollama package from the  GitHub repository .   Install Dependencies:   Ensure you have any required dependencies, including libraries for your specific model.   Verify Installation:   Use  ollama --version  to confirm Ollama is installed correctly.   2. Model Deployment and Usage: Pull the Model:   Use the  ollama pull <model_name>  command to download the desired model.   Run the Model:   Use  ollama run <model_name>  to initiate the model's execution.   Interacting with the Model:   Ollama provides an API at  http://localhost:11434/api/generate  for interacting with the model.   Optional: Web UI:   Explore  Open WebUI  for a user-friendly interface to manage and interact with models.   Optional: Custom Applications:   Build custom applications using libraries like FastAPI and Gr...

Run windows apps through Wine emulator on Mac OS Apple Silicon

  https://macappstore.org/whiskey/   About the App App name : Whiskey App description : whiskey (App: Whiskey.app) App website :  http://usewhiskey.com/ Install the App Press  Command+Space  and type  Terminal  and press  enter/return  key. Copy and paste the following command in Terminal app: /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"  and press  enter/return  key. Wait for the command to finish. If you are prompted to enter a password, please type your Mac user's login password and press ENTER. Mind you, as you type your password, it won't be visible on your Terminal (for security reasons), but rest assured it will work. Now, copy/paste and run this command to make  brew  command available inside the Terminal:  echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile Copy and paste the following command: brew install --cask whiskey Done! You can ...

pivot_root vs chroot vs switch_root

The chroot command modifies the root directory for a process, limiting its access to the rest of the filesystem. This is useful for security, containerization, or testing purposes. The process running under chroot has no knowledge of anything outside its jail, making it appear as if it is running on the root filesystem. pivot_root vs chroot vs switch_root 1 2 3 In Linux, pivot_root, chroot, and switch_root are commands used to change the root filesystem of a process. Each has its specific use cases and functionalities. pivot_root The pivot_root command is used to change the root filesystem of the current process and its children. It swaps the current root filesystem with a new one, making the old root accessible at a specified location. This command is typically used during the boot process when the system transitions from an initial ramdisk (initrd) to the real root filesystem 1 . Example: mount  /dev/hda1 /new-root cd  /new-root pivot_root . old-root exec chroot  . sh ...

Vim Copy & Paste Terminology

The keyboard shortcuts to copy, cut, and paste can be boiled down into three characters that utilize Vim-specific terminology. Understanding these terms will help you recall the correct keyboard shortcut. Y stands for “yank” in Vim, which is conceptually similar to copying. D stands for “delete” in Vim, which is conceptually similar to cutting. P stands for “put” in Vim, which is conceptually similar to pasting. I deliberately use the phrase “conceptually similar to” because these actions are not one and the same. If you want to dive deeper into this explanation, scroll down to the section below titled “What Happens Under the Hood?” Copy, Cutting, and Pasting in Vim/Vi - The Basics 1.Press esc to return to normal mode. Any character typed in normal mode will be interpreted as a vim command. 2.Navigate your cursor to the beginning of where you want to copy or cut. 3.To enter visual mode, you have 3 options. We suggest using visual mode because the selected characters are highlighted, an...