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share (command)

In computing, share is a command for DOS that allows software to perform file locks. Locking files became necessary when MS-DOS began allowing files to be accessed simultaneously by multiple programs, either through multitasking or networking.[1][2][3]

Implementations edit

On MS-DOS, the command is available in versions 3 and later.[4] The command is also available in FreeDOS,[5] PTS-DOS,[6] and SISNE plus.[7] The FreeDOS version was developed by Ron Cemer and is licensed under the GPL.[8] DR DOS 6.0[9] and Datalight ROM-DOS[10] include an implementation of the share command.

Windows XP and later versions include 16-bit commands (nonnative) for the MS-DOS subsystem that are included to maintain MS-DOS compatibility. The share MS-DOS subsystem command performs functions that are now inherent to Microsoft Windows. It is available to preserve compatibility with existing files, but has no effect at the command line because the functionality is automatic. The 16-bit MS-DOS subsystem commands are not available on 64-bit editions of Windows.[11]

Design edit

There were five locking modes:

  • Deny None
  • Deny Read
  • Deny Write
  • Deny All
  • Compatibility (designed for backward compatibility with existing MS-DOS programs)

The program runs as a terminate-and-stay-resident program and is typically loaded at boot-up.

Syntax edit

share [/F:space] [/L:locks] 
  • /F:space Allocates file space (in bytes) for file-sharing information.
  • /L:locks Sets the number of files that can be locked at one time.

See also edit

References edit

  1. ^ Jamsa, Kris A. (1993), DOS: The Complete Reference, Osborne McGraw-Hill, p. 206, ISBN 0078819040.
  2. ^ "DOS Command: SHARE".
  3. ^ MS-DOS and Windows command line share command
  4. ^ Wolverton, Van (2003). Running MS-DOS Version 6.22 (20th Anniversary Edition), 6th Revised edition. Microsoft Press. ISBN 0-7356-1812-7.
  5. ^ "FreeDOS 1.2 Updates Group - FreeDOS Base". Ibiblio.org. Retrieved 2022-09-08.
  6. ^ "PTS-DOS 2000 Pro User Manual" (PDF). Buggingen, Germany: Paragon Technology GmbH. 1999. (PDF) from the original on 2018-05-12. Retrieved 2018-05-12.
  7. ^ SISNE plus - Referência Sumária | Datassette
  8. ^ "FreeDOS 1.2 Updates Package - share (FreeDOS Base)". Ibiblio.org. 2007-10-20. Retrieved 2022-09-08.
  9. ^ DR DOS 6.0 User Guide Optimisation and Configuration Tips
  10. ^ "Datalight ROM-DOS User's Guide" (PDF). www.datalight.com.
  11. ^ MS-DOS subsystem commands

Further reading edit


share, command, computing, share, command, that, allows, software, perform, file, locks, locking, files, became, necessary, when, began, allowing, files, accessed, simultaneously, multiple, programs, either, through, multitasking, networking, sharedeveloper, m. In computing share is a command for DOS that allows software to perform file locks Locking files became necessary when MS DOS began allowing files to be accessed simultaneously by multiple programs either through multitasking or networking 1 2 3 shareDeveloper s Microsoft Paragon Technology Systems DR Datalight Novell Ron CemerInitial release1984 39 40 years agoOperating systemMS DOS PTS DOS SISNE plus Windows DR DOS ROM DOS FreeDOSTypeCommand Contents 1 Implementations 2 Design 3 Syntax 4 See also 5 References 6 Further readingImplementations editOn MS DOS the command is available in versions 3 and later 4 The command is also available in FreeDOS 5 PTS DOS 6 and SISNE plus 7 The FreeDOS version was developed by Ron Cemer and is licensed under the GPL 8 DR DOS 6 0 9 and Datalight ROM DOS 10 include an implementation of the share command Windows XP and later versions include 16 bit commands nonnative for the MS DOS subsystem that are included to maintain MS DOS compatibility The share MS DOS subsystem command performs functions that are now inherent to Microsoft Windows It is available to preserve compatibility with existing files but has no effect at the command line because the functionality is automatic The 16 bit MS DOS subsystem commands are not available on 64 bit editions of Windows 11 Design editThere were five locking modes Deny None Deny Read Deny Write Deny All Compatibility designed for backward compatibility with existing MS DOS programs The program runs as a terminate and stay resident program and is typically loaded at boot up Syntax editshare F space L locks F space Allocates file space in bytes for file sharing information L locks Sets the number of files that can be locked at one time See also editList of DOS commandsReferences edit Jamsa Kris A 1993 DOS The Complete Reference Osborne McGraw Hill p 206 ISBN 0078819040 DOS Command SHARE MS DOS and Windows command line share command Wolverton Van 2003 Running MS DOS Version 6 22 20th Anniversary Edition 6th Revised edition Microsoft Press ISBN 0 7356 1812 7 FreeDOS 1 2 Updates Group FreeDOS Base Ibiblio org Retrieved 2022 09 08 PTS DOS 2000 Pro User Manual PDF Buggingen Germany Paragon Technology GmbH 1999 Archived PDF from the original on 2018 05 12 Retrieved 2018 05 12 SISNE plus Referencia Sumaria Datassette FreeDOS 1 2 Updates Package share FreeDOS Base Ibiblio org 2007 10 20 Retrieved 2022 09 08 DR DOS 6 0 User Guide Optimisation and Configuration Tips Datalight ROM DOS User s Guide PDF www datalight com MS DOS subsystem commandsFurther reading editCooper Jim 2001 Special Edition Using MS DOS 6 22 Third Edition Que Publishing ISBN 978 0789725738 nbsp This DOS software related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Share command amp oldid 1135257047, wikipedia, wiki, book, books, library,

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