Astonishingly a search for 'truncate unix utility' doesn't turn up anything useful apart from hundreds of references to the ftruncate man page. This is how I did it:

dd of=destfile bs=1 seek=newsize count=1 </dev/null

where newsize can be 1k, 400G, whatever and destfile is the destination filename.

posted at 20:35 | path: /unix | permanent link to this entry