Deleting All Lines in Vim
There are two common methods to delete all lines in Vim. First, in command mode, press `gg` to jump to the beginning of the file, then enter `dG`. Here, `gg` positions the cursor at the first line, and `dG` deletes from the current line to the end of the file. Second, directly enter `:%d` in command mode and press Enter. The `%` denotes the entire file range, and `d` is the delete command. After execution, the file content is cleared. If there are unsaved changes, Vim will prompt whether to save when exiting.
Read MoreCommand to Output Current Time in Ubuntu Terminal
In the Ubuntu system, the `date` command can output the current time. The basic `date` command displays the complete date and time, including the weekday, month, day, specific time, and time zone. To display only the time part, formatting parameters can be used, such as `date +"%H:%M:%S"` to output the 24-hour format time; `date +"%I:%M:%S %p"` to output the 12-hour format with AM/PM indicator.
Read MoreChanging the Owner and Group of Folders and Files in Ubuntu
In the Ubuntu system, the `chown` command is used to modify the owner user and group of a file or folder. The basic syntax is `chown [options] username:group filename/foldername`. Common operation examples include: using `sudo chown username filename.txt` to change the file owner;
Read MoreChecking for Malicious Logins on Ubuntu System
In Ubuntu system, there are multiple ways to check for malicious login situations. To view login history, commands like `last`, `lastb`, and `last -i` can be used. For system log inspection, commands such as `sudo grep "Failed password" /var/log/auth.log` are applicable; in newer Ubuntu versions, `journalctl -u ssh -g "Failed password"` can be used instead. To check recently logged-in users, commands like `who`, `w`, and `lastlog` are useful. For SSH login records, `sudo grep sshd /var/log/auth.log` combined with relevant keywords can be employed.
Read MoreHow to Install or Update Graphics Card Drivers in Ubuntu System
There are common methods to update graphics card drivers in Ubuntu. The third method is recommended in the introduction. Method 1 uses the official repository: first, run `sudo apt update` to update the package list, then `sudo apt upgrade -y` to upgrade. Method 2 is for NVIDIA: you can install a driver management tool or use the graphical tool `sudo nvidia-settings`. Method 3 is to add the Graphics Drivers PPA repository by executing `sudo add-apt-repository ppa:graphics-drivers/ppa` and other steps in sequence.
Read MoreInstalling Docker on Ubuntu with GPU Support
This article introduces the installation and configuration of Docker using the Alibaba Cloud mirror source, with support for NVIDIA GPU usage. First, add the Alibaba Cloud GPG key and set up the repository, then update the apt source and install Docker. Next, add the domestic mirror source address in `/etc/docker/daemon.json` and restart the Docker service for configuration. Then, download and install nvidia-container-toolkit via the curl command, configure it as the Docker runtime, and finally test GPU support. Key steps
Read MoreStarting Programs with /etc/rc.local on Ubuntu 22.04
This article introduces the method to achieve program startup at boot using `/etc/rc.local` on Ubuntu 20.04 or 22.04 systems. It requires editing the `/lib/systemd/system/rc-local.service` file to add configurations, creating and granting execution permissions to `/etc/rc.local`, creating a soft link for the service, and enabling the relevant service. After the above steps, reboot the device to check if the startup at boot is successfully implemented. If a log file containing "Test Successful" is generated in the specified path, it indicates that the setup...
Read MoreInstalling CPU-only Caffe on Ubuntu
The article you provided covers the basic steps of image recognition using Caffe, including installing Caffe on the Ubuntu system, configuring environment variables, and how to use pre-trained models for classification predictions. Below are some supplementary and optimization suggestions for your document content: ### 1. Preparation Before Installation Ensure your computer meets the following requirements: - Operating System: Ubuntu - Python Version: Python 3.x is recommended, as many libraries and frameworks receive better support in Python 3. - CUDA (Optional): If you want to use
Read MoreInstallation of TensorFlow
This article provides a detailed introduction to the specific steps of model training and prediction using TensorFlow locally, with special emphasis on how to install and configure TensorFlow through Docker containers to ensure the stability and portability of the development environment. The main contents include the following aspects: 1. **Installing TensorFlow Dependencies**: First, it is necessary to install a specific version of Python, pip, and a virtual environment. A specified version (such as 3.5) is recommended to avoid compatibility issues. 2. **Simplifying Installation Using Docker Containers**
Read MoreInstalling Ubuntu Linux Subsystem on Windows 10
This article introduces two methods to install the Ubuntu subsystem on Windows 10. The first method is to search and obtain it through the Microsoft Store, which requires opening the Settings and enabling Developer Mode first. The second method is to use the command `lxrun /install` in PowerShell for installation. The detailed process includes downloading the installation package, setting up the username and password, and other steps. After installation, you can launch the Ubuntu subsystem by entering "bash" in PowerShell and check the root directory to confirm the successful installation. If uninstallation is needed, you can use the PowerShell command... (Note: The original Chinese text was cut off at "uninstall can be done in Powe", so the translation assumes the continuation with relevant commands, but only the provided content is translated as per the user's input.) （根据用户提供的原文结尾截断情况，上述翻译中保留了原文最后不完整的部分“can be done in Powe”，完整翻译需基于完整原文。若用户实际原文末尾还有内容，需补充完整后再次翻译。）
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