I"m just starting. julia 1.6 on vscode


what am i doing wrong please?

type ]

See: The Julia REPL · The Julia Language

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Follow the JuMP tutorials

https://jump.dev/JuMP.jl/stable/tutorials/Getting%20started/getting_started_with_JuMP/

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Looks like you are using non-standard string definition characters. Furthermore, if you want to install multiple packages at once, put them in a list.
Try

Pkg.add(["JUMP", "GLPK"])
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