diff --git a/README.md b/README.md
index b073f52..c34d96c 100644
--- a/README.md
+++ b/README.md
@@ -23,29 +23,19 @@ curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazy
 
 ### Windows
 
-**PowerShell** (관리자 권한 권장):
+**PowerShell**:
 
 bottom:
 ```powershell
-powershell -c "iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bottom.ps1'|iex"
+powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-bottom.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bottom.ps1' -OutFile $t; & $t"
 ```
 
 lazygit:
 ```powershell
-powershell -c "iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.ps1'|iex"
+powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-lazygit.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.ps1' -OutFile $t; & $t"
 ```
 
-**CMD** (기본 명령 프롬프트):
 
-bottom:
-```cmd
-curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bottom.bat" -o install.bat && install.bat
-```
-
-lazygit:
-```cmd
-curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.bat" -o install.bat && install.bat
-```
 
 ## 도구별 사용법
 
@@ -62,13 +52,13 @@ curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazy
 btm
 ```
 
-| 단축키 | 동작 |
-|--------|------|
-| `q` / `Esc` | 종료 |
-| `F1` ~ `F5` | 탭 전환 |
-| `↑` `↓` | 프로세스 선택 |
-| `k` | 선택한 프로세스 종료 |
-| `/` | 검색 |
+| 단축키      | 동작                 |
+| ----------- | -------------------- |
+| `q` / `Esc` | 종료                 |
+| `F1` ~ `F5` | 탭 전환              |
+| `↑` `↓`     | 프로세스 선택        |
+| `k`         | 선택한 프로세스 종료 |
+| `/`         | 검색                 |
 
 ### lazygit
 
@@ -83,14 +73,14 @@ Git을 위한 터미널 UI 도구입니다.
 lazygit
 ```
 
-| 단축키 | 동작 |
-|--------|------|
-| `q` | 종료 |
-| `↓` `↑` `→` `←` | 화면 간 이동 |
-| `Space` | 파일 Stage/Unstage |
-| `c` | 커밋 작성 |
-| `P` `p` | Push / Pull |
-| `?` | 도움말 |
+| 단축키          | 동작               |
+| --------------- | ------------------ |
+| `q`             | 종료               |
+| `↓` `↑` `→` `←` | 화면 간 이동       |
+| `Space`         | 파일 Stage/Unstage |
+| `c`             | 커밋 작성          |
+| `P` `p`         | Push / Pull        |
+| `?`             | 도움말             |
 
 ---
 
diff --git a/install-bottom.bat b/install-bottom.bat
deleted file mode 100644
index 3af1372..0000000
--- a/install-bottom.bat
+++ /dev/null
@@ -1,69 +0,0 @@
-@echo off
-:: ============================================================
-:: install-bottom.bat
-:: Install script for bottom(btm) process monitor (Windows batch)
-::
-:: This file calls the PowerShell script (install-bottom.ps1).
-:: PowerShell 5.1 or higher is required (included in Windows 10/11).
-::
-:: Usage:
-::   install-bottom.bat
-::   install-bottom.bat "C:\tools\bin"    <- specify install path
-:: ============================================================
-
-:: ── Switch to UTF-8 codepage ──
-chcp 65001 >nul
-
-setlocal EnableDelayedExpansion
-
-echo [INFO]  install-bottom.bat started
-
-:: ── Check if PowerShell exists ────────────────────────────────
-where powershell >nul 2>&1
-if %ERRORLEVEL% neq 0 (
-    echo [ERROR] PowerShell not found.
-    echo         PowerShell is included in Windows 7 and later.
-    pause
-    exit /b 1
-)
-
-:: ── Check location of install-bottom.ps1 in same folder ──
-set "PS1_PATH=%~dp0install-bottom.ps1"
-if not exist "%PS1_PATH%" (
-    echo [ERROR] install-bottom.ps1 not found.
-    echo         install-bottom.ps1 must be in the same folder as this batch file.
-    echo         Location: %PS1_PATH%
-    pause
-    exit /b 1
-)
-
-:: ── Process install path parameter ────────────────────────────────
-set "EXTRA_ARGS="
-if not "%~1"=="" (
-    set "EXTRA_ARGS=-InstallDir ""%~1"""
-    echo [INFO]  Install path specified: %~1
-)
-
-echo [INFO]  Running PowerShell script...
-echo.
-
-:: ── Run PowerShell ─────────────────────────────────────────
-:: -ExecutionPolicy Bypass : Bypass execution policy (no user config change)
-:: -NoProfile              : Skip profile loading (faster startup)
-:: -NonInteractive         : Suppress interactive prompts
-powershell.exe -ExecutionPolicy Bypass -NoProfile -NonInteractive ^
-    -File "%PS1_PATH%" %EXTRA_ARGS%
-
-set "PS_EXIT=%ERRORLEVEL%"
-
-echo.
-if %PS_EXIT% equ 0 (
-    echo [INFO]  Installation complete.
-    echo         Open a new terminal (cmd/PowerShell) to use the 'btm' command.
-) else (
-    echo [ERROR] An error occurred during installation. (Exit code: %PS_EXIT%)
-)
-
-echo.
-pause
-exit /b %PS_EXIT%
diff --git a/install-bottom.ps1 b/install-bottom.ps1
index 36107a5..84966a5 100644
--- a/install-bottom.ps1
+++ b/install-bottom.ps1
@@ -23,6 +23,12 @@
     .\install-bottom.ps1 -InstallDir "C:\tools\bin"
     .\install-bottom.ps1 -AddToPath $false
 
+    # One-liner install from remote (download then run; -ExecutionPolicy Bypass for current process only):
+    powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-bottom.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bottom.ps1' -OutFile $t; & $t"
+
+    # With parameters:
+    powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-bottom.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bottom.ps1' -OutFile $t; & $t -InstallDir 'C:\tools\bin'"
+
 .NOTES
     If execution policy error occurs:
       Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
diff --git a/install-lazygit.bat b/install-lazygit.bat
deleted file mode 100644
index 7889780..0000000
--- a/install-lazygit.bat
+++ /dev/null
@@ -1,69 +0,0 @@
-@echo off
-:: ============================================================
-:: install-lazygit.bat
-:: Install script for lazygit terminal UI for git (Windows batch)
-::
-:: This file calls the PowerShell script (install-lazygit.ps1).
-:: PowerShell 5.1 or higher is required (included in Windows 10/11).
-::
-:: Usage:
-::   install-lazygit.bat
-::   install-lazygit.bat "C:\tools\bin"    <- specify install path
-:: ============================================================
-
-:: ── Switch to UTF-8 codepage ──
-chcp 65001 >nul
-
-setlocal EnableDelayedExpansion
-
-echo [INFO]  install-lazygit.bat started
-
-:: ── Check if PowerShell exists ────────────────────────────────
-where powershell >nul 2>&1
-if %ERRORLEVEL% neq 0 (
-    echo [ERROR] PowerShell not found.
-    echo         PowerShell is included in Windows 7 and later.
-    pause
-    exit /b 1
-)
-
-:: ── Check location of install-lazygit.ps1 in same folder ──
-set "PS1_PATH=%~dp0install-lazygit.ps1"
-if not exist "%PS1_PATH%" (
-    echo [ERROR] install-lazygit.ps1 not found.
-    echo         install-lazygit.ps1 must be in the same folder as this batch file.
-    echo         Location: %PS1_PATH%
-    pause
-    exit /b 1
-)
-
-:: ── Process install path parameter ────────────────────────────────
-set "EXTRA_ARGS="
-if not "%~1"=="" (
-    set "EXTRA_ARGS=-InstallDir ""%~1"""
-    echo [INFO]  Install path specified: %~1
-)
-
-echo [INFO]  Running PowerShell script...
-echo.
-
-:: ── Run PowerShell ─────────────────────────────────────────
-:: -ExecutionPolicy Bypass : Bypass execution policy (no user config change)
-:: -NoProfile              : Skip profile loading (faster startup)
-:: -NonInteractive         : Suppress interactive prompts
-powershell.exe -ExecutionPolicy Bypass -NoProfile -NonInteractive ^
-    -File "%PS1_PATH%" %EXTRA_ARGS%
-
-set "PS_EXIT=%ERRORLEVEL%"
-
-echo.
-if %PS_EXIT% equ 0 (
-    echo [INFO]  Installation complete.
-    echo         Open a new terminal (cmd/PowerShell) to use the 'lazygit' command.
-) else (
-    echo [ERROR] An error occurred during installation. (Exit code: %PS_EXIT%)
-)
-
-echo.
-pause
-exit /b %PS_EXIT%
diff --git a/install-lazygit.ps1 b/install-lazygit.ps1
index 638979e..ec508f6 100644
--- a/install-lazygit.ps1
+++ b/install-lazygit.ps1
@@ -23,6 +23,12 @@
     .\install-lazygit.ps1 -InstallDir "C:\tools\bin"
     .\install-lazygit.ps1 -AddToPath $false
 
+    # One-liner install from remote (download then run; -ExecutionPolicy Bypass for current process only):
+    powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-lazygit.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.ps1' -OutFile $t; & $t"
+
+    # With parameters:
+    powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-lazygit.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.ps1' -OutFile $t; & $t -InstallDir 'C:\tools\bin'"
+
 .NOTES
     If execution policy error occurs:
       Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser