Changing your uid in OS X

You will need to match uids across your unix systems if you want full read/write priviledges on nfs mounted disks. The sooner you do this, the better, since you will not have lots of files around with the wrong uid.

• launch netinfo manager and authenticate (either from the menu or click the padlock icon)
• Select users
• Select user to modify
• select value for uid
• change to the value on unix system (ask unix sysadmin or when you nfs mount, your uid will be listed instead of username provided it does not map to a user on the mac, which is unlikely)
• deselect the field by clicking somthing else
• save changes

Now you need to change ownership on all your files that were created with the old uid.

• In shell:
  

  % cd /Users [directory above home]
  % sudo chown -R {your user name}:{your group name} {your user name}
  eg:
  % sudo chown -R salathe:admin salathe
  

• You can search for other files that need correcting by doing:

  % cd /
  % ls -lR | grep [old_uid]
  

  to find anything w/the old uid (might work better as root). Then chown as above (-R is only needed to chown recursively down a directory tree).