add install method for linux + desktop file

Author: dotsem

README.md

@@ -29,7 +29,7 @@ Clone the repository and build the binary:
 ```bash
 git clone https://github.com/dotsem/tusshi.git
 cd tusshi
-go build -o tusshi cmd/main.go
+go build -o tusshi cmd/tusshi/main.go
 ```
 
 You can run the compiled binary directly or move it into a directory in your system PATH (such as `/usr/local/bin`):
@@ -38,6 +38,20 @@ You can run the compiled binary directly or move it into a directory in your sys
 mv tusshi /usr/local/bin/
 ```
 
+### Installing on Linux 
+
+```bash
+./linux-install.sh
+```
+
+### Installing on MacOS
+
+Currently built from source, homebrew support will be added later on.
+
+### Installing on Windows
+
+Currently built from source, package manager support will be added later on.
+
 ---
 
 ## Getting Started

linux-install.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if ! command -v go >/dev/null 2>&1; then
+    echo "Error: Go is not installed. Please install Go 1.26.3 or higher." >&2
+    exit 1
+fi
+
+echo "Building tusshi..."
+go build -o tusshi cmd/tusshi/main.go
+
+# determine target directories depending on privilege level
+if [ "$(id -u)" -eq 0 ]; then
+    BIN_DIR="/usr/local/bin"
+    APP_DIR="/usr/share/applications"
+    ICON_DIR="/usr/share/icons/hicolor/512x512/apps"
+    PIXMAP_DIR="/usr/share/pixmaps"
+    echo "Installing system-wide..."
+else
+    BIN_DIR="${HOME}/.local/bin"
+    APP_DIR="${HOME}/.local/share/applications"
+    ICON_DIR="${HOME}/.local/share/icons/hicolor/512x512/apps"
+    PIXMAP_DIR="${HOME}/.local/share/icons"
+    echo "Installing user-local (run with sudo for system-wide installation)..."
+fi
+
+mkdir -p "$BIN_DIR" "$APP_DIR" "$ICON_DIR" "$PIXMAP_DIR"
+
+cp -f tusshi "$BIN_DIR/"
+chmod +x "$BIN_DIR/tusshi"
+
+if [ -f "assets/tusshi.png" ]; then
+    cp -f assets/tusshi.png "$ICON_DIR/tusshi.png"
+    cp -f assets/tusshi.png "$PIXMAP_DIR/tusshi.png"
+fi
+
+if [ -f "tusshi.desktop" ]; then
+    cp -f tusshi.desktop "$APP_DIR/"
+fi
+
+# update desktop environment database to pick up the new shortcut
+if command -v update-desktop-database >/dev/null 2>&1; then
+    update-desktop-database "$APP_DIR" || true
+fi
+
+echo "Installation complete!"
+if [ "$(id -u)" -ne 0 ]; then
+    # alert user if bin dir is not in PATH
+    case ":$PATH:" in
+        *:"$BIN_DIR":*) ;;
+        *)
+            echo "Warning: $BIN_DIR is not in your PATH."
+            echo "Please add it to your shell configuration (e.g. ~/.bashrc or ~/.zshrc):"
+            echo "  export PATH=\"\$PATH:$BIN_DIR\""
+            ;;
+    esac
+fi

tusshi.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=tuSSHi
+Comment=Interactive SSH connection manager (TUI)
+Icon=tusshi
+Exec=tusshi
+Terminal=true
+Categories=System;Utility;TerminalEmulator;
+Keywords=ssh;tui;config;connection;manager;