[Coco] OS9 Arc

[L. Curtis Boyle]

Ah, thanks for the correction. This one sounds more like the STREAM utility Bruce Isted did, that we used for years (I still do, on occasion).

Sent from my iPhone

> On Jan 4, 2017, at 8:20 PM, Bill Pierce via Coco <coco at maltedmedia.com> wrote:
> 
> Curtis, this isn't the "archiving" utility "dearc", it's a disk copy utility called "arc" (as in arching files from one disk to another). It checks the last modified date and keeps the newest version when a duplicate exists on the disk.
> Here's the usage from arc:
> 
> Usage: arc [-acdeflmuv] from_dir to_dir
>     a = all files
>     c = confirm file if not there
>     d = confirm non-existant directory
>     e = confirm existing directory
>     f = prevent copy of files
>    ln = only n levels of the tree (1..9)
>     m = do multilple (all) directories
>     v = verify the copy
>     u = force uppercase for comparisons
> 
> As you can see, it copies files, directories, subdirectories, etc
> It's not an archiving util like zip or lzh.
> 
> 
> 
> 
> 
> 
> Bill Pierce
> "Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro Tull
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> 
> 
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> 
> -----Original Message-----
> From: L. Curtis Boyle <curtisboyle at sasktel.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Wed, Jan 4, 2017 7:40 pm
> Subject: Re: [Coco] OS9 Arc
> 
> Going off old memory, I am pretty sure it is a CRC check, like LHA and ZIP. Sent from my iPhone> On Jan 4, 2017, at 5:36 PM, William Carlin <whcarlinjr at gmail.com> wrote:> > I am continually amazed at the resiliency and speed of the OS9 Arc> command.  I discovered it was one of the included binaries on Bill's "XRoar> Coco 2b Becker Port Starter Kit".  Now I am flabbergasted that this program> works so well within the memory constraints of the 64k Color Computer.> > I have always wondered about the "verify" option in this program.  It does> not appear to be doing a "byte by byte" comparison of the source and> destination files like the cmp command does.  Does this program use some> kind of checksum to determine if the destination file is different from the> source?  Is the source code for this program available somewhere online?  I> checked though my extensive archives of OS9 software and can only find the> binary archive but no source code.> > William> > CoCo 4 ever> > -- > Coco mailing list> Coco at maltedmedia.com> https://pairlist5.pair.net/mailman/listinfo/coco> -- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco
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