diff --git a/.local/bin/browser-x b/.local/bin/browser-x
index 9e2dbd2..c8de0df 100755
--- a/.local/bin/browser-x
+++ b/.local/bin/browser-x
@@ -1,3 +1,3 @@
 #!/bin/bash
-GDK_DPI_SCALE="1.3" firefox
-#google-chrome-stable --force-device-scale-factor=1.2&
+#GDK_DPI_SCALE="1.3" firefox
+brave-bin --force-device-scale-factor=1.2&
diff --git a/.local/bin/ssh-permissions b/.local/bin/ssh-permissions
index b88cb46..5fb6cde 100755
--- a/.local/bin/ssh-permissions
+++ b/.local/bin/ssh-permissions
@@ -2,9 +2,5 @@ chmod 700 ~/.ssh
 chmod 644 ~/.ssh/authorized_keys
 chmod 644 ~/.ssh/known_hosts
 chmod 644 ~/.ssh/config
-chmod 600 ~/.ssh/id_rsa
-chmod 644 ~/.ssh/id_rsa.pub
-chmod 600 ~/.ssh/github_rsa
-chmod 644 ~/.ssh/github_rsa.pub
-chmod 600 ~/.ssh/mozilla_rsa
-chmod 644 ~/.ssh/mozilla_rsa.pub
+chmod 400 ~/.ssh/id_rsa
+chmod 400 ~/.ssh/id_rsa.pub
diff --git a/.vimrc b/.vimrc
index aea7135..f443e56 100644
--- a/.vimrc
+++ b/.vimrc
@@ -1,4 +1,10 @@
 " settings
+if ! filereadable(system('echo -n "$HOME/.vim/autoload/plug.vim"'))
+	silent !mkdir -p $HOME/.vim/autoload/
+	silent !curl --silent "https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim" > $HOME/.vim/autoload/plug.vim
+	autocmd VimEnter * PlugInstall
+endif
+
 set laststatus=2
 set shiftwidth=4
 set softtabstop=4
@@ -70,12 +76,12 @@ hi CursorLine cterm=NONE term=NONE ctermbg=NONE guibg=NONE
 hi CursorLine ctermbg=235
 
 " map
+nnoremap S :%s//g<Left><Left>
 nnoremap ee :!mupdf $(echo % \| sed 's/tex$/pdf/') & disown<CR><CR>
 map <C-n> :NERDTreeToggle<CR>
 nnoremap <silent> <C-t> :tabnew <CR>
 nnoremap <F11> :Goyo <CR>
 nnoremap <F7> :tabprevious<CR>
-nnoremap ww :w!<CR><CR>
 nnoremap <F8> :tabnext<CR>
 nnoremap <F2> :GoRun<CR>