diff --git a/functions.sh b/functions.sh
new file mode 100644
index 0000000..26455bf
--- /dev/null
+++ b/functions.sh
@@ -0,0 +1,3 @@
+get_ip() {
+  ip a | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}' | cut -d/ -f1 | head -n 1
+}
diff --git a/lua/pika/core/keymaps.lua b/lua/pika/core/keymaps.lua
index 69fc905..f753647 100644
--- a/lua/pika/core/keymaps.lua
+++ b/lua/pika/core/keymaps.lua
@@ -58,32 +58,55 @@ map("n", "<leader>R", [[:%s/\<<C-r><C-w>\>/<C-r><C-w>/gI<Left><Left><Left>]])
 map("n", "<leader>sv", "<C-w>v", { desc = "Split window vertically" }) -- split window vertically
 map("n", "<leader>sh", "<C-w>s", { desc = "Split window horizontally" }) -- split window horizontally
 
-vim.keymap.set({ "n", "i" }, "<leader>tt", function()
-	-- Frage den Shell-Command ab
-	vim.ui.input({ prompt = "Shell Command: " }, function(cmd)
-		if cmd == nil or cmd == "" then
-			return
-		end
+-- ─< Set path to your shell functions file (update this to your actual path) >─────────
+local shell_script_path = vim.fs.joinpath(vim.fn.stdpath("config") .. "/functions.sh")
 
-		local result = vim.fn.system(cmd)
-		local exit_code = vim.v.shell_error
+-- ─< Add this before the keymap definition to check for file existence >───────────────
+if vim.uv.fs_stat(shell_script_path) then -- Check if file exists
+	-- inserts shell commands (sources ~/.config/nvim/functions.sh to source predefined functions)
+	vim.keymap.set({ "n", "i" }, "<leader>tt", function()
+		vim.ui.input({ prompt = "Shell Command: " }, function(input_cmd)
+			if not input_cmd or input_cmd == "" then
+				return
+			end
 
-		if exit_code ~= 0 then
-			vim.notify("Shell Error:\n" .. result, vim.log.levels.ERROR, { title = "Shell Command Failed" })
-			return
-		end
+			-- Construct the command to source your functions and execute
+			local full_cmd = string.format(
+				"source %s && %s", -- Uses POSIX-compliant '&&' to fail if source fails
+				vim.fn.shellescape(shell_script_path),
+				input_cmd
+			)
 
-		local lines = vim.split(result, "\n", { trimempty = true })
+			-- Execute in bash to ensure function availability
+			local result = vim.fn.system({ "bash", "--norc", "--noprofile", "-c", full_cmd })
+			local exit_code = vim.v.shell_error
 
-		-- Insert at cursor position
-		local row, col = unpack(vim.api.nvim_win_get_cursor(0))
-		if #lines == 1 then
-			-- Insert inline if the result is a single line
-			local current_line = vim.api.nvim_get_current_line()
-			local new_line = current_line:sub(1, col) .. lines[1] .. current_line:sub(col + 1)
-			vim.api.nvim_set_current_line(new_line)
-		else
-			vim.api.nvim_buf_set_lines(0, row, row, false, lines)
-		end
-	end)
-end, { desc = "Insert Shell Output at Cursor" })
+			-- Handle errors
+			if exit_code ~= 0 then
+				vim.notify(
+					"Error (" .. exit_code .. "):\n" .. result,
+					vim.log.levels.ERROR,
+					{ title = "Command Failed" }
+				)
+				return
+			end
+
+			-- Process output
+			local lines = vim.split(result:gsub("\n$", ""), "\n")
+
+			-- Insert at cursor position
+			local row, col = unpack(vim.api.nvim_win_get_cursor(0))
+			if #lines == 1 then
+				vim.api.nvim_set_current_line(
+					vim.api.nvim_get_current_line():sub(1, col)
+						.. lines[1]
+						.. vim.api.nvim_get_current_line():sub(col + 1)
+				)
+			else
+				vim.api.nvim_buf_set_lines(0, row, row, false, lines)
+			end
+		end)
+	end, { desc = "Insert Shell Output (with functions)" })
+else
+	vim.notify("Shell functions file not found: " .. shell_script_path, vim.log.levels.WARN)
+end