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What I have found about fish:// (the kio protocol) is old and often incomplete. Is there anything that's new? Like a primer? Or is this something to put on the KDE todo list?

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Related: What's the difference between SFTP, SCP and FISH protocols?, which cites README.fish in the mc CVS. It looks substantial, but I don't know if it's complete and up-to-date. Is it? – Gilles Jun 8 '11 at 20:30
I checked; "Revision 1.6 - (download) (annotate) Mon Jun 2 19:47:30 2003 UTC (8 years ago) by proskin" it's 8 years old. – Syborgia Alphas Jun 8 '11 at 20:34
The important question isn't how old it is, it's how up-to-date it is. Has the FISH protocol changed since then? – Gilles Jun 8 '11 at 20:47

lftp supports FISH and is open source. Check the source of the FISH module, there are details of the protocol there:


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