[Linux-disciples] Deleting the first N lines of a file

[Stephen R Laniel]

Does anyone know of a very fast way to delete the first N
lines of a file? (That is, after the deletion, the file's
size will reduce from N + k to k lines.) Speed is rather
important here, so something like

head -n -N [filename] > end.txt
mv end.txt [filename]

won't do. [filename] may be very large -- on the order of
1GB.

-- 
Stephen R. Laniel
steve at laniels.org
Cell: +(617) 308-5571
http://laniels.org/
PGP key: http://laniels.org/slaniel.key
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