some small changes

.commonrc

@@ -1,4 +1,5 @@
 
+
 # Solarized (mostly) dark skin for Midnight Commander
 export MC_SKIN=$HOME/.config/mc/skins/solarized.ini
 export EDITOR=vim
@@ -17,6 +18,8 @@ fi
 # use ~/.commonrc.local for local changes, proxy etc.
 [[ -f "$HOME/.commonrc.local" ]] && source "$HOME/.commonrc.local"
 
-eval "$(/opt/homebrew/bin/brew shellenv)"
+if [[ $OSTYPE == 'darwin'* ]]; then
+    eval "$(/opt/homebrew/bin/brew shellenv)"
+fi
 
 cd ~