diff --git a/.bashrc b/.bashrc
index 98a13c7..6abfa60 100644
--- a/.bashrc
+++ b/.bashrc
@@ -27,3 +27,5 @@ echo "You are here to witness."
 echo "色即是空 空即是色"
 eval "$(direnv hook bash)"
 export PATH="$HOME/.npm-global/bin:$PATH"
+export PATH="$HOME/bin:$PATH"
+export PATH="$HOME/.local/bin:$PATH"
diff --git a/init.lua b/init.lua
index e49572a..29807e4 100644
--- a/init.lua
+++ b/init.lua
@@ -795,6 +795,18 @@ vim.api.nvim_create_autocmd('BufEnter', {
 	end,
 })
 
+-------------------------------------------------------------------------------
+-- C
+-------------------------------------------------------------------------------
+vim.api.nvim_create_autocmd("FileType", {
+	pattern = "c",
+	callback = function()
+		vim.opt_local.tabstop = 2
+		vim.opt_local.shiftwidth = 2
+		vim.opt_local.softtabstop = 2
+		vim.opt_local.expandtab = true
+	end,
+})
 -------------------------------------------------------------------------------
 -- Golang
 -------------------------------------------------------------------------------
@@ -827,23 +839,23 @@ vim.api.nvim_create_autocmd('BufEnter', {
 	end,
 })
 local function toggle_checkbox()
-  local line = vim.api.nvim_get_current_line()
-  local new
-  if line:match('%[ %]') then
-    new = line:gsub('%[ %]', '[x]', 1)
-  elseif line:match('%[x%]') then
-    new = line:gsub('%[x%]', '[ ]', 1)
-  elseif line:match('^(%s*[-*+])%s+(.*)') then
-    -- bare list item → promote to checkbox
-    new = line:gsub('^(%s*[-*+])%s+', '%1 [ ] ', 1)
-  else
-    return
-  end
-  vim.api.nvim_set_current_line(new)
+	local line = vim.api.nvim_get_current_line()
+	local new
+	if line:match('%[ %]') then
+		new = line:gsub('%[ %]', '[x]', 1)
+	elseif line:match('%[x%]') then
+		new = line:gsub('%[x%]', '[ ]', 1)
+	elseif line:match('^(%s*[-*+])%s+(.*)') then
+		-- bare list item → promote to checkbox
+		new = line:gsub('^(%s*[-*+])%s+', '%1 [ ] ', 1)
+	else
+		return
+	end
+	vim.api.nvim_set_current_line(new)
 end
 
 vim.keymap.set('n', '<leader>tc', toggle_checkbox,
-  { desc = 'Toggle markdown checkbox', buffer = false })
+	{ desc = 'Toggle markdown checkbox', buffer = false })
 
 -------------------------------------------------------------------------------
 -- Comments
@@ -858,10 +870,10 @@ vim.api.nvim_create_autocmd('BufEnter', {
 -- Refreshing
 -------------------------------------------------------------------------------
 vim.api.nvim_create_autocmd({ "FocusGained", "BufEnter", "CursorHold", "CursorHoldI" }, {
-  pattern = "*",
-  callback = function()
-    if vim.fn.mode() ~= "c" and vim.fn.getcmdwintype() == "" then
-      vim.cmd("checktime")
-    end
-  end,
+	pattern = "*",
+	callback = function()
+		if vim.fn.mode() ~= "c" and vim.fn.getcmdwintype() == "" then
+			vim.cmd("checktime")
+		end
+	end,
 })
diff --git a/tmux.conf b/tmux.conf
index 256f797..902b724 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -31,9 +31,9 @@ if-shell 'upower -i /org/freedesktop/UPower/devices/battery_BAT0 | grep -q "ener
 }
 set -ag @minimal-tmux-status-right-extra "#[fg=color150]#[bg=color150,fg=black]CPU:#(uptime | awk -F'load average:' '{ print \$2 }' | cut -d',' -f1)#[fg=color150,bg=default]#[bg=default] "
 set -ag @minimal-tmux-status-right-extra "#[fg=color150]#[bg=color150,fg=black]RAM:#(free -h | awk '/^Mem:/ {print \$3 \"/\" \$2}')#[fg=color150,bg=default]#[bg=default] "
-if-shell 'command -v nvidia-smi' {
-  set -ag @minimal-tmux-status-right-extra "#[fg=color150]#[bg=color150,fg=black]GPU: #(nvidia-smi --query-gpu=utilization.gpu --format=csv,noheader,nounits)%#[fg=color150,bg=default]#[bg=default] "
-}
+# if-shell 'command -v nvidia-smi' {
+#   set -ag @minimal-tmux-status-right-extra "#[fg=color150]#[bg=color150,fg=black]GPU: #(nvidia-smi --query-gpu=utilization.gpu --format=csv,noheader,nounits)%#[fg=color150,bg=default]#[bg=default] "
+# }
 set -ag @minimal-tmux-status-right-extra "#[fg=color150]#[bg=color150,fg=black]#(date +"%Y-%m-%dT%H:%M")#[fg=color150,bg=default]#[bg=default]"
 set -g @minimal-tmux-status-left-extra "#{pane_title}"
 set -g @minimal-tmux-use-arrow true