A certain text file has become un-editable and "invisible" to 'cat.' Doing 'ls -al' on this file reveals that it has attribute 's' in the permissions string, eg: srwxr-xr-x The 's' is in the position that you'd normally find a 'd' or a hyphen. None of my manuals talk about this particular attribute. What does it mean, and more importantly, how do I get rid of it?? Thanks in advance.... rafe b.