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AIX -- du is missing the -c flag -- any way to easily get a grand total?

du on AIX is missing the -c flag.   Is there an easy way to get a grand total?
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"du" for a single directory tree shows the total value for the directory in question on the last line,

so if you run "du /tmp" you will see the last line as something like

12345   /tmp

That's the total for /tmp, everything above is detail output and the values are contained in the value shown on the last line.

"du" for several directories ("du /tmp /var" for example) is another case.

You could (additionally?) run such a "du" with the "-s" (= sum) option and add the values like this:

du -s /tmp /var | awk '{sum+=$1; print} END {print sum, "\ttotal"}'

The "coreutils" package in the AIX toolbox collection or from
contains the GNU version of "du", which supports "-c".
use '-s' flag instead of '-c'
XetroximynAuthor Commented:
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