On 01/16/2012 06:46 AM, tlaro...@polynum.com wrote: > It seems what I'm trying to say is not clear. I know that shipping Plan9 > has no '-R'. What I mean is, since find(1) and others are not here > because they are duplicating other utils, and can be recreated with > other "primitives", why du(1) was kept and not simply ls(1) extended > with a '-R'? Since ls(1) already displays the size of a file (in bytes).
My guess would be that this discussion illustrates exactly why: ls(1) is a gadget that pretty-prints the directory entry. Extending it with '-R' would require it to learn about possibly-circular mount points; yuck. On the other hand, du(1) has this sort of feature as its raison d'être. --Joel
