Sage symlink not working    
   I've tried to create a symlink for sage to use in my OS X terminal, using the command
sudo ln -s /Applications/SageMath-7.3.app/sage/sage /usr/local/bin/sage
I got an alias file in my bin-folder, but when I try to open it all I get is this message
"The operation can’t be completed because the original item for “sage” can’t be found."
When I type in just the path /Applications/SageMath-7.3.app/sage/sage in the terminal, sage opens just fine. 
Can somebody tell me what I'm doing wrong? I'm not very accustomed to working in the terminal.
 
  
 
Possibly permissions issue? For myself, I usually put the path for
sagein my.profile, e.g. a line likeexport PATH=$PATH:'/Applications/SageMath-7.3.app/sage/'might work for you.After completing the
lncommand, what doescommand -v sagetell you?Try this