For macOS developers and users, understanding Zsh (Z Shell) is essential, especially since it became the default shell on macOS Catalina in 2019. This article will explore what Zsh is, its key features, and how it can enhance your command-line experience on Mac.
What is Zsh?Zsh, pronounced “Zee Shell,” is a powerful Unix shell designed to be an enhanced version of Bash (Bourne Again SHell). It offers advanced features like improved autocompletion, customizable prompts, and extensive plugin supp ...
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未读In the world of Unix-based systems, choosing the right shell can significantly impact your productivity and workflow. Two of the most popular shells among developers are Bash (Bourne Again SHell) and Zsh (Z Shell). This article will provide a detailed comparison between the two, focusing on their features, use cases, and practical examples to help you make an informed decision.
What are Bash and Zsh?Bash is the default shell in most Linux distributions and macOS. It is an extension of the origi ...
IntroductionIn Bash scripting, checking if a file exists is a common task that programmers encounter daily. Whether you’re automating workflows, validating inputs, or handling errors, knowing how to perform this check efficiently is essential. This guide will walk you through the best methods to check if a file exists in Bash, complete with practical examples and tips.
Methods to Check if a File Exists in Bash1. Using the -e FlagThe -e flag checks if a file exists, regardless of its type (file ...
IntroductionThe .bash_profile file is a critical component of the Linux environment, especially for programmers and system administrators. It allows you to customize your shell environment, set environment variables, and define startup commands. In this guide, we’ll walk you through how to edit .bash_profile in Linux, with practical examples and tips to enhance your workflow.
What is .bash_profile?The .bash_profile file is a script that runs automatically when you log in to a Bash shell. It’s t ...
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How to Exit TmuxExiting Tmux is straightforward once you understand its key bindings and commands. Here are the most common methods:
Method 1: Exiting Tmux with a ShortcutTmux uses key bindings to manage sessions. The default prefix key is Ctrl + b (hold down the Ctrl key and press b). To exit Tmux, follow these steps:
Press Ctrl + b to activate the Tmux prefix.
Immediately press d (for “detach”).
This command detaches your current Tmux session but keeps it running in the background. You can ...
Installing Tmux on LinuxTmux can be installed on Linux using the package manager specific to your distribution. Below are the installation commands for popular Linux distributions:
Distribution
Command
Debian/Ubuntu
sudo apt update && sudo apt install tmux
Fedora
sudo dnf install tmux
CentOS/RHEL
sudo yum install epel-release && sudo yum install tmux
Arch Linux
sudo pacman -S tmux
openSUSE
sudo zypper install tmux
Alpine Linux
sudo apk add tmux
Insta ...
IntroductionRunning Bash scripts is a fundamental skill for Linux users, especially programmers and system administrators. Whether you’re automating tasks, deploying applications, or managing servers, knowing how to execute Bash scripts efficiently is essential. This guide will walk you through the steps to run a Bash script in Linux, along with practical examples and tips.
What is a Bash Script?A Bash script is a text file containing a series of commands that are executed by the Bash shell. I ...
生活记录
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组合 = 避险资产（黄金）+ 周期资产（商品）+ 成长资产（科技股）+ 稳健资产（金融债）
自选
黄金ETF
属性：避险资产，抗通胀工具，与股市/债市相关性低
适用场景：地缘政治风险、货币贬值、经济衰退预期
商品基金
属性：大宗商品（能源、工业金属、农产品等），周期性强，波动较高
适用场景：通胀上行周期、全球经济复苏期
纳斯达克
属性：高成长性科技企业，长期增长潜力大，但估值波动剧烈
适用场景：经济扩张期、利率稳定或下行期
政策性金融债
属性：低风险利率债，信用风险极低，收益稳定
适用场景：市场动荡期、流动性管理、收益“压舱石”
风险偏好方案一：稳健
基金
占比
政策性金融债
50%
黄金ETF
20%
纳斯达克精选
20%
全球商品基金
10%
方案二：平衡
基金
占比
政策性金融债
30%
黄金ETF
20%
纳斯达克精选
30%
全球商品基金
20%
方案三：激进
基金
占比
政策性金融债
10%
黄金ETF
20%
纳斯达克精选
40%
全球商品基金
30%
...
Step-by-Step Guide to Add Homebrew to PATHStep 1: Verify Homebrew InstallationFirst, check if Homebrew is installed correctly by running:
1brew --version
If you see the version number, Homebrew is installed. If you get a “command not found” error, you may need to reinstall Homebrew.
Step 2: Determine Your ShellCheck which shell you are using by running:
1echo $SHELL
Common shells include /bin/zsh (default on newer macOS versions) and /bin/bash.
Step 3: Update Shell Configuration FileDepending ...
Step-by-Step Guide to Uninstall HomebrewStep 1: Run the Uninstall ScriptHomebrew provides an official uninstall script that removes most of its files and configurations. Open your Terminal and run the following command:
1/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)"
This script will prompt you to confirm the uninstallation. Type y and press Enter to proceed.
Step 2: Verify the UninstallationAfter running the uninstall script, check i ...
