I'm trying to create a zip file from file contents which are being piped in, e.g.
mysql [params and query] | zip -q output.zip -
This writes the zip correctly, but when you open the zip, the file within it is called "-". Is there any way of specifying what the filename of the piped in data should be within the zip?
From what i can gather you cannot do both with the zip command, i mean you cannot both specify the filenames and pipe the content. You can either pipe the contents and the resulting file is - or you can pipe the filenames with -@.
That does not mean that doing so is impossible using other techniques. I outline one of those below. It does mean that you have to have PHP installed and the zip extension loaded.
There could be a whole bunch of other ways to do it. But this is the easiest that I know of. Oh and it's a one-liner too.
This is a working example using PHP
echo contents | php -r '$z = new ZipArchive();$z->open($argv[1],ZipArchive::CREATE);$z->addFromString($argv[2],file_get_contents("php://stdin"));$z->close();' test.zip testfile
To run on windows just swap single and double quotes. Or just place the script in a file.
"test.zip" is the resulting Zip file, "testfile" is the name of the contents that are being piped into the command.
Result from unzip -l test.zip
Archive: test.zip
Length Date Time Name
--------- ---------- ----- ----
6 01-07-2010 12:56 testfile
--------- -------
6 1 file
And here is a working example using python
echo contents | python -c "import sys
import zipfile
z = zipfile.ZipFile(sys.argv[1],'w')
z.writestr(sys.argv[2],sys.stdin.read())
z.close()
" test5.zip testfile2
Result of unzip -l
Archive: test5.zip
Length Date Time Name
-------- ---- ---- ----
9 01-07-10 13:43 testfile2
-------- -------
9 1 file
Result of unzip -p
contents