(This toggles hidden flag on all symlinks in your home folder.)
If you want the Library folder to stay visible forever: Open your Home folder (Command + Shift + H). show hidden finder link
If you prefer using the Terminal or need more control, you can use the following method: (This toggles hidden flag on all symlinks in
Pressing this once will make hidden files—which usually appear with a pale or grayed-out color —visible. Pressing it again will hide them. Alternative Methods Using the Option Key : While in Finder, click the menu in the top menu bar. Hold down the key, and the hidden folder will appear in the list. Terminal Command Alternative Methods Using the Option Key : While
To clarify:
Whatever your reason, showing those links gives you back control.
This method works for links like ~/.bashrc symlinks but may not restore sidebar items.