From: vallor@vallor.earth   
      
   At Sun, 5 Oct 2025 20:11:54 -0400, "Alan K."  wrote:   
      
   > On 10/5/25 7:36 PM, vallor wrote:   
   > > Good advice.   
   > >   
   > > There's also the -S option to du, which totals up   
   > > usage in directories.  So:   
   > >   
   > > sudo du -Sx / > /tmp/d.sizes   
   > >   
   > > Then:   
   > >   
   > > sort -rn /tmp/d.sizes > /tmp/sorted.d.sizes   
   > >   
   > > head /tmp/sorted.d.sizes   
   > >   
   > > The "-x" in "du -Sx" means to stay on the same filesystem,   
   > > so if /home is separate, you'll need to repeat the process   
   > > there.   
   >   
   > Simplified without creating the file:   
   > 	sudo du -Sx / | sort -rn | head -20   
      
   The trouble with that is that running the du -Sx can be a fairly   
   expensive operation (depending on how much you keep on the partition in   
   question, of course), so you might want to save the entire output for   
   further inspection.   
      
   It's one of those things for which I like to keep multiple stages.   
   YMMV.   
      
   BTW, it's _so_ expensive on my fileserver that I run it less than once   
   a year there...   
      
   $ ll sorted.volume1.d.sizes   
   -rw-r----- 1 root root 902516082 Jul  7  2024 sorted.volume1.d.sizes   
      
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