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How to Install Gemini CLI on Windows Environment

Sun, 13 Jul 2025 23:49:56 +0900

[For Beginners] How to Install Gemini CLI on Windows

“Gemini CLI” allows you to use Google’s generative AI “Gemini” from the command line. In this article, we will explain the steps to install Gemini CLI in a Windows environment as easily as possible.

1. Preparation: Install Node.js and npm

First, since Gemini CLI runs on an environment called “Node.js”, you need to have the following installed:

Node.js
npm (Package management tool included with Node.js)
npx (Command execution tool included with npm)

Please download the Windows version of Node.js from the official website below (the LTS version is recommended):

👉 Node.js Official Website

Once the installation is complete, let’s verify if it was installed correctly with the following commands.

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node -v
npm -v

2. Launch PowerShell

To use Gemini CLI on Windows, it is common to operate it using PowerShell. Type “PowerShell” in the Start menu to launch it.

3. Install Gemini CLI

Copy and paste the following command into PowerShell and execute it:

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npx @google/gemini-cli

This command temporarily executes the Gemini CLI package published by Google. You may be prompted for initial setup or login if necessary.

Note: It may take a few minutes the first time. If you encounter an error, please double-check your Node.js or network environment.

4. Installation Complete! What to do next

Now, Gemini CLI has been installed on Windows. From now on, you will be able to perform various operations using Gemini from the command line, such as text generation and code completion.

If you want to check the official documentation or help, you can also utilize commands like the following.

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npx @google/gemini-cli --help

Conclusion

Let’s review the steps to introduce Gemini CLI to Windows.

Install Node.js and npm
Launch PowerShell
Execute npx @google/gemini-cli

Now you’re all set! If you want to use generative AI locally, please give it a try using these steps as a reference.

Command to check Windows license status

Mon, 14 Apr 2025 00:41:45 +0900

[Windows] How to check license status (just one command)

Have you ever wondered if your Windows license is correctly activated?

A very convenient method is to check your license information with a single command. By following the steps below, you can easily check your current license status.

Command to check license status

You can display license information using a script tool built into Windows. Here is the command to use:

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slmgr /dli

When you run this command, partial license information will be displayed in a window.

How to run

Type “cmd” in the Start Menu, right-click on Command Prompt, and select “Run as administrator”.
Enter the following into the command prompt and press the Enter key:
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slmgr /dli
After waiting a few seconds, license information like the following will be displayed.

Main information displayed

Part of the product key
License type (Retail, OEM, etc.)
License status (Licensed, expired, not activated, etc.)

Want to know more detailed information?

There are also commands like the following:

slmgr /dlv: Display more detailed license information
slmgr /xpr: Display the license expiration date (e.g., whether it is permanent)

Summary

You can easily check the Windows license status with a single command.

Simple check: slmgr /dli
Detailed check: slmgr /dlv
Expiration date check: slmgr /xpr

If there is a problem with your license, updates or some functions may be restricted, so it is safe to check regularly.

ffmpeg Parameters for iOS

Sun, 02 Mar 2025 04:16:07 +0900

ffmpeg Conversion Parameters Optimized for iOS

Here is an ffmpeg command to convert videos so they can be played smoothly on iOS devices (iPhone and iPad).

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ffmpeg -i input.mp4 \
-c:v libx264 -profile:v high -level 4.1 \
-vf "scale=1920:-2" -r 30 \
-crf 20 -preset slow \
-c:a aac -b:a 128k -ar 48000 \
-movflags +faststart output.mp4

Meaning of Each Option (Brief Explanation)

Option	Description
`-i input.mp4`	Input file (source video to be converted)
`-c:v libx264`	Encode video with H.264 (iOS compatible)
`-profile:v high -level 4.1`	Widely compatible profile and level for iOS
`-vf "scale=1920:-2"`	Resize width to 1920px, auto-adjust height maintaining aspect ratio
`-r 30`	Convert to 30fps frame rate
`-crf 20`	Video quality (lower value means higher quality, recommended 18-23)
`-preset slow`	Balance between encode speed and compression ratio (slow means high compression/high quality)
`-c:a aac`	Encode audio in AAC format
`-b:a 128k`	Set audio bitrate to 128kbps
`-ar 48000`	Set audio sampling rate to 48kHz (recommended for iOS)
`-movflags +faststart`	Places the index at the beginning of the video, speeding up streaming playback on Web and iOS

Videos converted with these settings can be expected to have high compatibility and smooth playback on Apple devices such as iPhones and iPads.

You can adjust file size and image quality by changing the resolution and bitrate as needed. Try setting -crf to around 18 if you need high quality, or 22-25 if you want to reduce the file size.

Recommended iOS Apps

Wed, 18 Sep 2024 23:31:20 +0900

Recommended iOS Apps

How to Check if Your iPhone is SIM Locked

Thu, 12 Sep 2024 00:32:11 +0900

How to Check if Your iPhone is SIM Locked

Home Screen > Settings > General > About > Carrier Lock

Check whether it says No SIM restrictions or SIM locked.

How to Create a Shortcut to Lock Your Computer

Mon, 01 Apr 2024 01:37:49 +0900

Here is how to create a shortcut to lock your computer.

It is convenient because you can lock your computer by simply double-clicking the shortcut created on your desktop.

How to Create

1. Right-click on the desktop and select `New` > `Shortcut`

2. The Create Shortcut screen will appear. Enter `rundll32.exe user32.dll,LockWorkStation` and click `Next`

3. Enter the shortcut name `Lock Computer` and click `Finish`

4. Change the icon of the created shortcut

Right-click the created shortcut and select Properties

Click Change Icon

Select the yellow padlock icon and click OK. Click OK again to close the properties.

That’s it.

Double-clicking the created shortcut will lock your computer.

You can also lock your computer by pressing the Win key + L key.

*Note: No confirmation dialog will be displayed when locking the computer.

How to Restore the Classic Right-Click Menu in Windows 11

Sat, 30 Mar 2024 13:13:36 +0900

Here is how to restore the classic right-click menu in Windows 11.

Open the Registry Editor.

Press the Win key + R key, type regedit, and press the Enter key. 　

Navigate to HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}. Create this key if it does not exist.
Navigate to HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32. Create this key if it does not exist.
Check that the (Default) value in InprocServer32 is empty.

Restart your computer.
Confirm that the right-click menu has returned to the classic version.

How to create a shortcut to shutdown Windows

Tue, 11 Apr 2023 17:03:32 +0900

Here is how to create a shortcut to shut down Windows.

It is convenient because you can shut down by double-clicking the created shortcut placed on your desktop or elsewhere.

How to create

1. Right-click on the desktop, and select `New` > `Shortcut`

2. The shortcut creation screen will appear, enter `shutdown.exe -s -f -t 0` and click `Next`

3. Enter the shortcut name `Shutdown` and click `Finish`

4. Change the icon of the created shortcut

Right-click the created shortcut and select Properties

Click Change Icon...

Select the red square icon and click OK, then click OK again to close the properties window.

That’s it.

Double-clicking the created shortcut will shut down Windows.

*Note: No shutdown confirmation dialog will be displayed.

How to install CocoaPods on Mac

Sun, 09 Apr 2023 03:25:54 +0900

Install using terminal

Open the terminal
Run sudo gem install cocoapods → For some reason, an error message like the following appeared and the installation failed.

Output

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ERROR: Error installing cocoapods:
 The last version of activesupport (>= 5.0, < 8) to support your Ruby & RubyGems was 6.1.7.3. Try installing it with `gem install activesupport -v 6.1.7.3` and then running the current command again
 activesupport requires Ruby version >= 2.7.0. The current ruby version is 2.6.10.210.

So I searched the web for the error message (see “Reference” below) and executed the following command:

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/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Output

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==> Checking for `sudo` access (which may request your password)...
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
==> The following new directories will be created:
/usr/local/bin
/usr/local/etc
/usr/local/include
/usr/local/lib
/usr/local/sbin
/usr/local/share
/usr/local/var
/usr/local/opt
/usr/local/share/zsh
/usr/local/share/zsh/site-functions
/usr/local/var/homebrew
/usr/local/var/homebrew/linked
/usr/local/Cellar
/usr/local/Caskroom
/usr/local/Frameworks
==> The Xcode Command Line Tools will be installed.

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /bin/mkdir -p /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/sbin /usr/local/share /usr/local/var /usr/local/opt /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var/homebrew /usr/local/var/homebrew/linked /usr/local/Cellar /usr/local/Caskroom /usr/local/Frameworks
==> /usr/bin/sudo /bin/chmod ug=rwx /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/sbin /usr/local/share /usr/local/var /usr/local/opt /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var/homebrew /usr/local/var/homebrew/linked /usr/local/Cellar /usr/local/Caskroom /usr/local/Frameworks
==> /usr/bin/sudo /bin/chmod go-w /usr/local/share/zsh /usr/local/share/zsh/site-functions
==> /usr/bin/sudo /usr/sbin/chown kenji /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/sbin /usr/local/share /usr/local/var /usr/local/opt /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var/homebrew /usr/local/var/homebrew/linked /usr/local/Cellar /usr/local/Caskroom /usr/local/Frameworks
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/bin /usr/local/etc /usr/local/include /usr/local/lib /usr/local/sbin /usr/local/share /usr/local/var /usr/local/opt /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var/homebrew /usr/local/var/homebrew/linked /usr/local/Cellar /usr/local/Caskroom /usr/local/Frameworks
==> /usr/bin/sudo /bin/mkdir -p /usr/local/Homebrew
==> /usr/bin/sudo /usr/sbin/chown -R kenji:admin /usr/local/Homebrew
==> /usr/bin/sudo /bin/mkdir -p /Users/kenji/Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Users/kenji/Library/Caches/Homebrew
==> /usr/bin/sudo /usr/sbin/chown -R kenji /Users/kenji/Library/Caches/Homebrew
==> Searching online for the Command Line Tools
==> /usr/bin/sudo /usr/bin/touch /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> Installing Command Line Tools for Xcode-14.3
==> /usr/bin/sudo /usr/sbin/softwareupdate -i Command\ Line\ Tools\ for\ Xcode-14.3
Software Update Tool

Finding available software

Downloading Command Line Tools for Xcode
Downloaded Command Line Tools for Xcode
Installing Command Line Tools for Xcode
Done with Command Line Tools for Xcode
Done.
==> /usr/bin/sudo /usr/bin/xcode-select --switch /Library/Developer/CommandLineTools
==> /usr/bin/sudo /bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> Downloading and installing Homebrew...
remote: Enumerating objects: 236191, done.
remote: Counting objects: 100% (504/504), done.
remote: Compressing objects: 100% (327/327), done.
remote: Total 236191 (delta 176), reused 468 (delta 158), pack-reused 235687
Receiving objects: 100% (236191/236191), 68.37 MiB | 15.51 MiB/s, done.
Resolving deltas: 100% (173058/173058), done.
From https://github.com/Homebrew/brew
 * [new branch] master -> origin/master
 * [new branch] test-runners -> origin/test-runners
 * [new tag] 0.1 -> 0.1
 * [new tag] 0.2 -> 0.2
 * [new tag] 0.3 -> 0.3
 * [new tag] 0.4 -> 0.4
 * [new tag] 0.5 -> 0.5
 * [new tag] 0.6 -> 0.6
 * [new tag] 0.7 -> 0.7
 * [new tag] 0.7.1 -> 0.7.1
 * [new tag] 0.8 -> 0.8
 * [new tag] 0.8.1 -> 0.8.1
 * [new tag] 0.9 -> 0.9
 * [new tag] 0.9.1 -> 0.9.1
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 * [new tag] 1.0.0 -> 1.0.0
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 * [new tag] 1.2.6 -> 1.2.6
 * [new tag] 1.3.0 -> 1.3.0
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 * [new tag] 2.4.2 -> 2.4.2
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HEAD is now at c51687009 Merge pull request #15168 from reitermarkus/api-ruby-source-path
==> Installation successful!

==> Homebrew has enabled anonymous aggregate formulae and cask analytics.
Read the analytics documentation (and how to opt-out) here:
 https://docs.brew.sh/Analytics
No analytics data has been sent yet (nor will any be during this install run).

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
 https://github.com/Homebrew/brew#donations

==> Next steps:
- Run these two commands in your terminal to add Homebrew to your PATH:
 (echo; echo 'eval "$(/usr/local/bin/brew shellenv)"') >> /Users/kenji/.zprofile
 eval "$(/usr/local/bin/brew shellenv)"
- Run brew help to get started
- Further documentation:
 https://docs.brew.sh

Run brew install cocoapods

Output

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Warning: Treating cocoapods as a formula. For the cask, use homebrew/cask/cocoapods
==> Fetching dependencies for cocoapods: libyaml, ca-certificates, openssl@1.1, readline and ruby
==> Fetching libyaml
==> Downloading https://ghcr.io/v2/homebrew/core/libyaml/manifests/0.2.5
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/libyaml/blobs/sha256:b49e62f014
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Fetching ca-certificates
==> Downloading https://ghcr.io/v2/homebrew/core/ca-certificates/manifests/2023-
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/ca-certificates/blobs/sha256:11
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Fetching openssl@1.1
==> Downloading https://ghcr.io/v2/homebrew/core/openssl/1.1/manifests/1.1.1t
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/openssl/1.1/blobs/sha256:97676d
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Fetching readline
==> Downloading https://ghcr.io/v2/homebrew/core/readline/manifests/8.2.1
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/readline/blobs/sha256:abe9d3f3e
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Fetching ruby
==> Downloading https://ghcr.io/v2/homebrew/core/ruby/manifests/3.2.2
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/ruby/blobs/sha256:a4ac080688e87
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Fetching cocoapods
==> Downloading https://ghcr.io/v2/homebrew/core/cocoapods/manifests/1.12.0
######################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/cocoapods/blobs/sha256:11226288
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sh
######################################################################## 100.0%
==> Installing dependencies for cocoapods: libyaml, ca-certificates, openssl@1.1, readline and ruby
==> Installing cocoapods dependency: libyaml
==> Pouring libyaml--0.2.5.ventura.bottle.tar.gz
🍺 /usr/local/Cellar/libyaml/0.2.5: 10 files, 330KB
==> Installing cocoapods dependency: ca-certificates
==> Pouring ca-certificates--2023-01-10.all.bottle.tar.gz
==> Regenerating CA certificate bundle from keychain, this may take a while...
🍺 /usr/local/Cellar/ca-certificates/2023-01-10: 3 files, 216.9KB
==> Installing cocoapods dependency: openssl@1.1
==> Pouring openssl@1.1--1.1.1t.ventura.bottle.tar.gz
🍺 /usr/local/Cellar/openssl@1.1/1.1.1t: 8,101 files, 18.5MB
==> Installing cocoapods dependency: readline
==> Pouring readline--8.2.1.ventura.bottle.tar.gz
🍺 /usr/local/Cellar/readline/8.2.1: 50 files, 1.7MB
==> Installing cocoapods dependency: ruby
==> Pouring ruby--3.2.2.ventura.bottle.tar.gz
🍺 /usr/local/Cellar/ruby/3.2.2: 16,605 files, 46.3MB
==> Installing cocoapods
==> Pouring cocoapods--1.12.0.ventura.bottle.tar.gz
🍺 /usr/local/Cellar/cocoapods/1.12.0: 13,436 files, 27.8MB
==> Running `brew cleanup cocoapods`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

Run pod --version

Output

1

1.12.0

It seems to have been installed successfully for now.

Reference

Installing “CocoaPods”

How to Match Mac Copy and Paste Shortcut Keys with Windows

Wed, 05 Apr 2023 00:49:02 +0900

Introduction

When switching between Windows and Mac, the frequently used keyboard shortcuts like copy, paste, and undo are different. This post introduces a method to match them.

Setup Method (macOS Ventura)

Open System Settings
Select Keyboard
Select Keyboard Shortcuts
Select Modifier Keys
Assign the Control(^) key to “⌘ Command”
Assign the Command(⌘) key to “^ Control”
Click Done

That’s all.

How to find the location of an executable in Windows

Mon, 03 Apr 2023 00:02:55 +0900

How to find the location of an executable in Windows

Sometimes when you execute a command by specifying an executable file, you want to know where that executable file is located. In such cases, you can find the location of the executable file using the following command.

1

where <executable_file_name>

For example, if you want to know the location of Paint (mspaint.exe), you can do it as follows.

1

where mspaint.exe

References

How do I find the location of an executable in Windows?

My Current Main PC Specs

Thu, 08 Sep 2022 01:55:00 +0900

Here are the specs for my main PC.

Item Name	Value
Processor	Intel Core i7-8700K CPU @ 3.70GHz 3.70 GHz
Memory	32.0 GB
System Type	64-bit operating system, x64-based processor
OS	Windows 11 Enterprise (Version 21H2, Build 22000.856)
Manufacturer	MouseComputer Co., Ltd.

PC & Gadgets on kenji.blog

How to Install Gemini CLI on Windows Environment

[For Beginners] How to Install Gemini CLI on Windows

1. Preparation: Install Node.js and npm

2. Launch PowerShell

3. Install Gemini CLI

4. Installation Complete! What to do next

Conclusion

Command to check Windows license status

[Windows] How to check license status (just one command)

Command to check license status

How to run

Main information displayed

Want to know more detailed information?

Summary

ffmpeg Parameters for iOS

ffmpeg Conversion Parameters Optimized for iOS

Meaning of Each Option (Brief Explanation)

Recommended iOS Apps

Recommended iOS Apps

How to Check if Your iPhone is SIM Locked

How to Check if Your iPhone is SIM Locked

How to Create a Shortcut to Lock Your Computer

How to Create

1. Right-click on the desktop and select New > Shortcut

2. The Create Shortcut screen will appear. Enter rundll32.exe user32.dll,LockWorkStation and click Next

3. Enter the shortcut name Lock Computer and click Finish

4. Change the icon of the created shortcut

How to Restore the Classic Right-Click Menu in Windows 11

How to Restore the Classic Right-Click Menu in Windows 11

How to create a shortcut to shutdown Windows

How to create

1. Right-click on the desktop, and select New > Shortcut

2. The shortcut creation screen will appear, enter shutdown.exe -s -f -t 0 and click Next

3. Enter the shortcut name Shutdown and click Finish

4. Change the icon of the created shortcut

How to install CocoaPods on Mac

Install using terminal

Reference

How to Match Mac Copy and Paste Shortcut Keys with Windows

Introduction

Setup Method (macOS Ventura)

How to find the location of an executable in Windows

How to find the location of an executable in Windows

References

My Current Main PC Specs

1. Right-click on the desktop and select `New` > `Shortcut`

2. The Create Shortcut screen will appear. Enter `rundll32.exe user32.dll,LockWorkStation` and click `Next`

3. Enter the shortcut name `Lock Computer` and click `Finish`

1. Right-click on the desktop, and select `New` > `Shortcut`

2. The shortcut creation screen will appear, enter `shutdown.exe -s -f -t 0` and click `Next`

3. Enter the shortcut name `Shutdown` and click `Finish`