Re: How to create a link that works between OS X and Ubuntu
The link count for autobot and a1 will be 2; each name references the same file on disk. The symbolic link, however, is a pointer to a name. You can replace the file autobot without affecting a2, but if you replace autobot (rm autobot; make autobot) you will find that the connection between autobot and a is broken. Aha. Gotcha. Yes, I want a symbolic link then, since my program will be rebuilt over and over. Richard
Re: How to create a link that works between OS X and Ubuntu
On Apr 25, 2011, at 22:27, David Chapman wrote: > On 4/25/2011 7:38 PM, richard Cavell wrote: >> Further experimentation shows that symbolic links work (ln -s autobot a for >> the first command). Are hard links supposed to work? > > The hard link simply creates a new name for the file, which is probably > operating system dependent (you didn't describe the build process completely). Yes he did: >>> From: richard Cavell >>> Sent: 04/26/11 10:36 AM >>> To: users@subversion.apache.org >>> Subject: How to create a link that works between OS X and Ubuntu >>> >>> Hi everyone. I'm developing a program on Ubuntu 10.10. The directory in >>> which my project lives is part of my PATH. The executable that is built is >>> called 'autobot'. >>> >>> I type: >>> >>> ln autobot a > Subversion won't know the difference between the name "autobot" and the name > "a"; each will look like an ordinary file. A symbolic link, however, is a > different object type and Subversion can store it as such. That's correct, and that was the problem. I was reading Richard's message trying to figure out why it wasn't working, and it's exactly that Subversion doesn't (can't) realize a hardlink is a link. Use symlinks if you want to store them in the repository as links.
Re: How to create a link that works between OS X and Ubuntu
(moving top posting to bottom) - Original Message - From: richard Cavell Sent: 04/26/11 10:36 AM To: users@subversion.apache.org Subject: How to create a link that works between OS X and Ubuntu Hi everyone. I'm developing a program on Ubuntu 10.10. The directory in which my project lives is part of my PATH. The executable that is built is called 'autobot'. I type: ln autobot a a (And my program runs correctly). svn add a svn propset svn:executable ON a svn ci -m "Create shortcut" Now on my OS X box, with the current directory set to the project directory, and with that directory also being a part of PATH (although it is not named identically to the Ubuntu one), I type: svn up a And I get: -bash: /source/Autobot/autobotwiki/a: cannot execute binary file ls -l a gives me: -rwxrwxrwx 1 richard admin 55295 26 Apr 10:33 a The same thing happens if I create the link on OS X and try to run it under Ubuntu. So how do I do this? Richard On 4/25/2011 7:38 PM, richard Cavell wrote: Further experimentation shows that symbolic links work (ln -s autobot a for the first command). Are hard links supposed to work? Richard The hard link simply creates a new name for the file, which is probably operating system dependent (you didn't describe the build process completely). Subversion won't know the difference between the name "autobot" and the name "a"; each will look like an ordinary file. A symbolic link, however, is a different object type and Subversion can store it as such. Try this: ln autobot a1 ln -s autobot a2 ls -l The link count for autobot and a1 will be 2; each name references the same file on disk. The symbolic link, however, is a pointer to a name. You can replace the file autobot without affecting a2, but if you replace autobot (rm autobot; make autobot) you will find that the connection between autobot and a is broken. -- David Chapman dcchap...@acm.org Chapman Consulting -- San Jose, CA
Re: How to create a link that works between OS X and Ubuntu
Further experimentation shows that symbolic links work (ln -s autobot a for the first command). Are hard links supposed to work? Richard - Original Message - From: richard Cavell Sent: 04/26/11 10:36 AM To: users@subversion.apache.org Subject: How to create a link that works between OS X and Ubuntu Hi everyone. I'm developing a program on Ubuntu 10.10. The directory in which my project lives is part of my PATH. The executable that is built is called 'autobot'. I type: ln autobot a a (And my program runs correctly). svn add a svn propset svn:executable ON a svn ci -m "Create shortcut" Now on my OS X box, with the current directory set to the project directory, and with that directory also being a part of PATH (although it is not named identically to the Ubuntu one), I type: svn up a And I get: -bash: /source/Autobot/autobotwiki/a: cannot execute binary file ls -l a gives me: -rwxrwxrwx 1 richard admin 55295 26 Apr 10:33 a The same thing happens if I create the link on OS X and try to run it under Ubuntu. So how do I do this? Richard
