bash - Space optimization for the UNIX sort -m command? -

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I am trying to run a syndication test, in which thousands of very large pre-sorted files have a mega sort Merging is included in the file.

There are some current files that are usually merged (68M to 106M each).

I do not have enough hard drive space for input, temporary intermediate, and all output at the same time. What is a way to destructively destroy all these files using sort

? I am currently using: 

  sort-T / media / WD_Book / tmp --compress-program = gzip -g -k 6 -m * .rand.tab & gt; / Media / WD_Book / output / merged.rand.tab   
 (via the files  0001.rand.tab  to  1000.rand.tab < / Code>, and the ordered key is in the 6 column [thus  -k6  and  -g ] in the exponential marking.)  
 I know it It is possible to run a non-merge  sort  in-place, but MainePep specifically says that it will not work for  -m .   
 
 
 It may be that way (warning: wipe data.)  < Touch pre->  merged contacts. Rand.tab # File Result File Zero for File [0-9] *. Rand.tab; Sort -k 6 -g -m merge. Rand.tab $ file & gt; Result.rand.tab rm -f merged.rand.tab mv result.rand.tab merged.rand.tab # If you are really rare then you can make $ rm $. Done   
 Exchanging space for basically time, with the result of previous merge, you can merge one file at a time. In addition, you can remove the already merged file.  
 Again, try to backup your data before trying; -)

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