Is it possible to set by default to show hidden files and folders in Open and Save dialogs ?
I know it is possible to trigger to show hidden for dialog lifetime by press Command ⌘+Shift ⇧+..
Not without using the
chflags nohidden command, which is not recommended. One of the third-party file manager utilities such as PathFinder may have such an option.
In the terminal enter
defaults write com.apple.Finder AppleShowAllFiles 1