To be able to automount NFS exports of Linux servers on Mac OS X machines, you have to edit /etc/auto_master and add the option resvport so that the line looks like this:

/net                    -hosts          -nobrowse,nosuid,resvport

To prevent TextMate from storing state information in meta files starting with ._ (dot underscore files) just enter

defaults write com.macromates.textmate OakDocumentDisableFSMetaData 1

in a console window.

Macs do have an annoying feature of creating ._files whenever writing to a (remote) file system that does not support the Mac’s extended attributes. They also create .DS_Store files everywhere. This can drive you crazy after a while (like me right now). To prevent Macs from doing this on SMB mounts, add the following to your server‘s /etc/samba/smb.conf:

veto files = /._*/.DS_Store/

in every share section (the share names are enclosed in square brackets [share] ).

After the change, restart the Samba server! This solution works for directly editing files on the SMB mount with TextMate, but not for copying files in the Finder – it says, file names are too long, contain special characters… so you better create two shres, a [share} and a [shareveto]. Sorry for this.

There should also be a solution on the Mac itself, but I couldn’t get this to work – more on this at http://support.apple.com/kb/HT1629