That works for me, what is the output of
strace ln -f -s /var/www/html/releases/build1390 app-current ?
Oh, since it is a directory you need to add
-n for no dereference and this should solve the issue.
-f is really more of a convenience since adding the -f just causes it to unlink anyways. Although I guess it would probably happen a few hundred ms faster on a normally loaded system.
For example, if arf already points to /home:
strace ln -n -f -s / arf
symlink("/", "arf") = -1 EEXIST (File exists)
unlink("arf") = 0
symlink("/", "arf") = 0
strace ln -f -s / arf
write(2, "ln: "..., 4ln: ) = 4
write(2, "`arf/': cannot overwrite director"..., 34`arf/': cannot overwrite directory) = 34
write(2, "\n"..., 1) = 1
So without the
-n arf gets dereferenced so ln treats it as arf as if it were actually
/. In your particular example, if there is no error, I think you have probably created a new symbolic link inside of
/var/www/html/releases/build1390 app-current and will want to clean that up.