[Coco] OS9 Arc

[Bill Pierce]

William, I'm pretty sure Arc uses the "last modified" date to compare files.
I have used arc since the L1 days. When L2 came out, it really started to shine. There's only very rare ocassions I would even think of using dsave. In fact, I haven't used dsave in so long, I've forgotten the syntax.
I think arc was part of the OS9 User's Group files that got uploaded to Delphi right before L2 was released. I have the C sources in my archives.
You really want to see arc fly?, do a complete vhd to vhd copy in VCC at 89mhz. It's also the quickest "defrag" util around. Just copy your disk to a freshly formated disk and the defrag is done. The only thing arc doesn't do is copy the boottrack, so it only works as a "backup" util on non-system disks/drives. But there is a workaround. Use something like KUtil to copy the boottrack to the new disk, then rename the OS9Boot file on the source disk to AAAOS9Boot, that makes it the first file copied. Once the copy is done, rename it back to OS9Boot.
That's one util I COULD NOT do without :-)

 

 


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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-----Original Message-----
From: William Carlin <whcarlinjr at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Wed, Jan 4, 2017 6:36 pm
Subject: [Coco] OS9 Arc

I am continually amazed at the resiliency and speed of the OS9 Arccommand.  I discovered it was one of the included binaries on Bill's "XRoarCoco 2b Becker Port Starter Kit".  Now I am flabbergasted that this programworks so well within the memory constraints of the 64k Color Computer.I have always wondered about the "verify" option in this program.  It doesnot appear to be doing a "byte by byte" comparison of the source anddestination files like the cmp command does.  Does this program use somekind of checksum to determine if the destination file is different from thesource?  Is the source code for this program available somewhere online?  Ichecked though my extensive archives of OS9 software and can only find thebinary archive but no source code.WilliamCoCo 4 ever-- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco