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Operating Systems a CSA Perspective

Operating Systems a CSA Perspective. CPIS 210 John Beckett. Configuration Data. Binary configuration files per-application MS-DOS, Pre-95 Windows ASCII configuration files per-application UNIX/Linux System Registry Windows 95+ Means registry can “get messed up”

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Operating Systems a CSA Perspective

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  1. Operating Systemsa CSA Perspective CPIS 210 John Beckett

  2. Configuration Data • Binary configuration files per-application • MS-DOS, Pre-95 Windows • ASCII configuration files per-application • UNIX/Linux • System Registry • Windows 95+ • Means registry can “get messed up” • Some programs still use former methods 

  3. Whose Job Is It? • Pre-Win95 • Printer interfacing was the app’s task • The Adobe solution • Get a Postscript-enabled printer • Apps need only relate to Postscript • Win95+ • Printer interfacing is the printer manufacturer’s task

  4. Stages of Control • Primary vendor ignores the function • Secondary vendor bridges the gap so their hardware or software will work • Open-source solutions may prevail • Primary vendor recognizes the need • May provide the function themselves • May provide architected interfaces so that “the right” third party can provide the function • Standard (de-facto or agreed) takes over

  5. e.g. IP Development • “Winsock” was used to connect with Internet • Lacking DHCP functionality • Marketing was under the table, and piracy prevailed • Microsoft provided the proper software • Additional functionality may confuse the issue • Few understand what “shared Internet connection” really does

  6. “We Call It…” • Linux: Symbolic Link • Windows: Shortcut • Implementation is similar • Details may be a problem • E.g. User directory: Had to implement “root” on a Windows computer to allow Linux to write on a shared drive using Samba. • Probably much smoother now • E.g. Permissions: These will vary in subtle ways between platforms, so beware

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