if condition for checking a tortoiseSVN update into a linux bash

Question

I am working with a SVN server into a linux computer.I am trying to develop bash code for making the compilation automatically. The thing is that I do not want to compile the files if there have not been an update into my SVN server. so the first thing I do is checking for updates.

this way:

if svn update; then

...

fi

the problem is that even if there are not updates it enters into the if condition as it has to check for updates. I would like to Know if there is a way of checking if an update had occurred or not.

thank you.

Answer 1

The simplest way:

[ $(svn up|wc -l) != 2 ] && (
  echo "Your code here"
) || (
  echo "No changes."
)