ftp files based on start and finish byte
Gordon McMillan
gmcm at hypernet.com
Fri Sep 17 22:27:27 EDT 1999
coby writes:
> Here is a little problem...
>
> I want to transfer a 15MB file from one ftp sever to another
> using the passive mode...but I can't transfer 15MB at once...I
> can only transfer 5MB at a time...so I need a little script or
> ftp client (???) that will allow me to transfer files based on
> start and finish bytes..ie. I want to specify when to start and
> finish transfer...so basically I will get 3
>
> five mega byte files..which I can merge together with a merge
> utility and end up with the 15MB file...
Slightly modified from something I've used to stuff huge
datasets on piles of diskettes:
---------------------------------------------
import glob, sys
def cut(fnm):
f = open(fnm, 'rb')
i = 0
while 1:
data = f.read(5*(2**20))
if not data:
break
open('%s_%02d' % (fnm, i), 'wb').write(data)
i = i + 1
def paste(fnm):
f = open(fnm, 'wb')
parts = glob.glob(fnm+'*')
parts.sort()
for part in parts:
data=open(part, 'rb').read()
f.write(data)
if '-c' in sys.argv:
cut(sys.argv[-1])
elif '-p' in sys.argv:
paste(sys.argv[-1])
else:
print "Usage %s [-c|-p] <filename>" % sys.argv[0]
-----------------------------------------------------------------
- Gordon
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