bash: add noerr and highlight funcs

.mgr_config/.bashrc

@@ -2,7 +2,12 @@ git-home() {
   git --git-dir="$HOME/.git_home/" --work-tree="$HOME" "$@"
 }
 
+noerr() {
+    "$@" 2>/dev/null
+}
+
 alias gh='git-home'
 alias emacs='emacsclient -a="" -c'
+alias highlight='grep -U999999 --color=always'
 
 export PATH=$PATH:$HOME/.mgr_config/bin