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Script Command Line Arguments - Kdb+ / qStudio

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  • March 29, 2013 at 2:20 pm #133

    Simon
    Guest

    If I want to supply command line arguments to a .q script how can I do that?

    I have an end of day script that backs up data to a certain directory. I want to dynamically specify the location from a shell script.

    March 31, 2013 at 10:07 pm #150

    Ryan Hamilton
    Keymaster

    Hi Simon,

    For kdb command line arguments .z.f , .z.x and .Q.opt are the functions you want:

    `
    C:\temp\dd>echo “show `p” > script.q

    C:\temp\dd>q script.q -p 5000 -mvar 101 -myString “hello world”
    KDB+ 3.0 2013.03.14 Copyright (C) 1993-2013 Kx Systems

    “show `p”
    q).z.f / filename of script loaded
    `script.q
    q).z.x / command line args
    “-mvar”
    “101”
    “-myString”
    “hello world”

    q).Q.opt .z.x / convert to dict
    mvar | “101”
    myString| “hello world”
    `

    As you can see:
    .z.f – filename of script loaded at command line
    .z.x – string list of command line excluding q/script/kdb-specific-arguments
    .Q.opt – convert a list of strings to a dictionary

    • This reply was modified 11 years, 7 months ago by admin.
    May 8, 2014 at 2:30 pm #86457

    Ryan Hamilton
    Keymaster

    More details on the q command line arguments can be found here:
    http://www.timestored.com/kdb-guides/kdb-command-line-options

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