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IBM i

IBM i
Main Menu of IBM i 7.1, shown inside a TN5250 client
DeveloperIBM
Written inC++, C, PL/MI, Java, Assembly language, Modula-2, PL/MP[1][2][3]
OS familyIBM CPF
Working stateCurrent
Source modelClosed source
Initial releaseAugust 26, 1988 (1988-08-26)
Latest release7.5 / May 10, 2022 (2022-05-10)[4]
Marketing targetMinicomputer, midrange computer and enterprise server
Available inEnglish
Update methodProgram temporary fixes (PTFs)
Package managerRPM and YUM for open source packages
PlatformsIBM AS/400, IBM Power Systems
Kernel typeshares many Microkernel (SLIC) and Virtual machine (TIMI) design philosophies[5]
Default
user interface		Text-based user interface
LicenseProprietary
Preceded bySystem Support Program, Control Program Facility
Official websiteibm.com/products/ibm-i

IBM i (the i standing for integrated)[6] is an operating system developed by IBM for IBM Power Systems.[7] It was originally released in 1988 as OS/400, as the sole operating system of the IBM AS/400 line of systems. It was renamed to i5/OS in 2004, before being renamed a second time to IBM i in 2008.[8][9] It is an evolution of the System/38 CPF operating system,[5] with compatibility layers for System/36 SSP and AIX applications.[5] It inherits a number of distinctive features from the System/38 platform, including the Machine Interface which provides hardware independence, the implementation of object-based addressing on top of a single-level store, and the tight integration of a relational database into the operating system.[1]

  1. ^ a b Frank G. Soltis (1997). Inside the AS/400, Second Edition. Duke Press. ISBN 978-1882419661.
  2. ^ Leif Svalgaard (2003-10-08). "Re: Re: MI emulator". MI400 (Mailing list). Retrieved 2021-02-26.
  3. ^ "Reader Feedback on AS/400 to i Mystery Solved". itjungle.com. 2011-02-21. Retrieved 2021-03-12.
  4. ^ "IBM i 7.5 and IBM i Portfolio give strong foundation for continuing innovation". IBM. 2022-05-03. Retrieved 2022-05-03.
  5. ^ a b c Frank G. Soltis (2001). Fortress Rochester: the Inside Story of the IBM iSeries. System iNetwork. ISBN 978-1583040836.
  6. ^ Alex Woodie (2020-05-13). "Where is IBM i?". itjungle.com. Retrieved 2021-03-01.
  7. ^ "IBM i: A platform for innovators, by innovators". ibm.com. International Business Machines. Retrieved 22 September 2020.
  8. ^ Steve Will; Tom Huntington (2020-07-16). "IBM i in 2020: It's Not Just AS/400". youtube.com. Fortra. Retrieved 2021-03-21.
  9. ^ "IBM i5/OS V5R3 — the next generation of OS/400". IBM. 2004-05-04. Archived from the original on 2014-08-08. Retrieved 2021-02-24.

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