Shell Programming and Scripting

Help me understand the right output.

We have two machines.
The first one is
HP-UX machine1 B.11.00 U 9000/800 694339343 unlimited-user license

The second one is
AIX machine2 2 5 00067B2F4C00
with AIX version 5.2.0.0

Here is the command that I use on both systems on different directories

find . -size 30000 | xargs ls -l

On the HP system, this lists everything on the directory irrespective of the file size. I know this for a fact because, when I do a wc -l on the above as well as ls -l | wc -l, I get the same result/number.

On the AIX system, though the find command lists the files that are >= to size specified and then does output a line with ":" by itself followed by the listing of all the files.

I would assume the intent of the above command is to list the files in the current directory which are >= to the size only, However I dont seem to be able to get that in these systems. The closest to the result that I seem to get is on the AIX system until the line by the ":" by itself.

Am I wrong in my assumption or is there something more to this? Can someone please explain. Thanks.

Jerardfjay

Do "find . -size 30000" by itself. If no files at all are found, then
find . -size 30000 | xargs ls -l
will run "ls -l" with no arguments at all.

Perderabo,

did you mean if files were found for "find . -size 30000" then run the find again with the xargs command?

Jerardfjay

-EDIT-
What Perderabo means is:
-EDIT-
When you run find (in this case), the command will return the names of files that are larger than 30000 bytes in size. When you pipe the output of find to xargs, the filenames are supplied to xargs and the command specified (in this case ls -l) is run on the filenames.

If no files are found, then 'ls -l' will be run without any arguments, i.e. the output would be same as running 'ls -l' in the current working directory and will give full listing as the output.

Hope this helps!

Blowtorch,

Thanks for the explanation. Regards,

Jerardfjay

you may 'find' [sic] that some versions of find
on certain flavours of unix
do not include an implicit -print of found files

i.e. you need to do find . -print

also find already has an -ls option,

-ls and -fls are gnu extensions.

HPUX 11.0 find does not support that, for example.