압축된 10MB 부분으로 전송해야 하는 3.5GB CSV 파일이 있습니다. 하지만 zip 압축 후 분할하는 과정을 마친 후, , 를 이용하여 zip -s-zip을 재조립하면 zip -s 0작동하지 않습니다 zip -FF.
$ du -h mycsv.csv
3.1G mycsv.csv
먼저 최대 압축률로 zip 파일을 만듭니다.
$ zip -9 maximum.zip mycsv.csv
adding: mycsv.csv (deflated 92%)
$ du -h maximum.zip
254M maximum.zip
그런 다음 다음 명령을 사용하여 zip -s 10mzip을 여러 개의 10mb zip 부분으로 나눕니다.
zip -s 10m maximum.zip --out maxsplit.zip
copying: mycsv.csv
그런 다음 zip -s-다음 명령을 사용하여 파일을 zip으로 재조립했습니다.
$ zip -s- maxsplit.zip --out maxunsplit.zip
copying: mycsv.csv
그러나 파일이 예상 크기에 비해 매우 작습니다!
$ du -h maxunsplit.zip
21M maxunsplit.zip
대체 명령을 사용해 zip -s 0도 실패합니다.
$ zip -s 0 maxsplit.zip --out maxunsplit0.zip
copying: mycsv.csv
$ du -h maxunsplit0.zip
21M maxunsplit0.zip
또 다른 대체 명령 zip -FF도 실패했습니다.
$ zip -FF maxsplit.zip --out maxunsplitFF.zip
Fix archive (-FF) - salvage what can
Found end record (EOCDR) - says expect 26 splits
Scanning for entries...
Found spanning marker - expected as this is split (multi-disk) archive...
copying: mycsv.csv (265820618 bytes)
zip warning: entry truncated: mycsv.csv
zip warning: expected compressed/stored size 265820618, actual 20971443
zip warning: unexpected signature 50 4b 0d 0d on disk 2 at 2711323
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0b 08 on disk 2 at 8427139
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 08 03 on disk 3 at 4921506
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0c 06 on disk 6 at 2338084
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 04 02 on disk 6 at 3998893
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0c 01 on disk 6 at 6941468
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0d 01 on disk 11 at 6509060
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 01 0b on disk 13 at 6769524
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 03 09 on disk 16 at 3164347
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0e 02 on disk 16 at 5817195
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 03 06 on disk 16 at 7044780
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0d 07 on disk 17 at 9182115
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 05 03 on disk 19 at 3063961
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 00 02 on disk 19 at 10170897
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0b 01 on disk 20 at 1420190
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 02 05 on disk 22 at 1010931
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 07 05 on disk 22 at 1918087
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 07 0b on disk 23 at 1507450
zip warning: skipping this signature...
zip warning: unexpected signature 50 4b 0a 0a on disk 23 at 10456363
zip warning: skipping this signature...
Central Directory found...
no local entry: mycsv.csv
EOCDR found (26 3676780)...
zip warning: zip file empty
마지막에 일부 오류 메시지가 있지만 그 의미는 이해하지 못합니다! ?
Zip 및 Linux 버전:
$ zip --version
Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software license.
This is Zip 3.0 (July 5th 2008), by Info-ZIP.
$ uname -rosv
Linux 5.4.0-56-generic #62~18.04.1-Ubuntu GNU/Linux