[imglorp]

That whole "find -ls | awk" is wicked slow anyway; try wc and xargs...

  $ time find -ls | awk '{s += $7} END {print s}'
  15970582120

  real	0m27.721s
  user	0m1.256s
  sys	0m1.780s

  $ time find | xargs wc -c 2> /dev/null | tail -1
  604260969 total

  real	0m0.332s
  user	0m0.068s
  sys	0m0.204s

[dbaupp]

The standard disclaimer on find | xargs: you should use -print0 and -0 to avoid problems with files with whitespace in their names, i.e.

   $ find -print0 | xargs -0 wc -c 2> /dev/null | tail -1

(Also, many uses of find | xargs can be replaced with -exec cmd {} \; or -exec cmd {} +, e.g.

  $ find -exec wc -c {} + 2> /dev/null | tail -1

although this isn't much faster in this case.)

[aidos]

You sure that's not because of memory swapping? Once warmed up the awk command is much faster for me.

Also, the results are different - though I'm too lazy to figure out why right now :)

[cynwoody]

You need to filter out directory entries.

    find -type f -ls|awk '{s += $7} END {print s}'
    find -type f -print0 | xargs -0 wc -c | tail -1
    find -type f -exec wc -c {} + | tail -1

[zxcdw]

I am not familiar with awk, what's the 's+= $7'? What is the argument 2 passed to wc? Why is the produced output different? What am I missing here?

[coldgrnd]

s += $7 means "add the content of the 7th column to the total"

[zxcdw]

Makes sense, thanks!