Run command error in Windows 10

New to Julia
1

I was going through the examples in Running External Programs · The Julia Language and found some that worked on a Raspberry Pi but errored on Windows 10. In both instances I was working from the REPL.

mycommand = echo hello works just fine on each system

run(mycommand) works as expected on the Raspberry Pi installation but throws an error on Windows

julia> run(mycommand)
ERROR: IOError: could not spawn echo hello: no such file or directory (ENOENT)
Stacktrace:
[1] _spawn_primitive(::String, ::Cmd, ::Array{Any,1}) at .\process.jl:99
[2] #585 at .\process.jl:112 [inlined]
[3] setup_stdios(::Base.var"#585#586"{Cmd}, ::Array{Any,1}) at .\process.jl:196
[4] _spawn at .\process.jl:111 [inlined]
[5] run(::Cmd; wait::Bool) at .\process.jl:439
[6] run(::Cmd) at .\process.jl:438
[7] top-level scope at REPL[22]:1

Any ideas?

2

There is no program echo on Windows, see e.g. Run(cmd) manual examples throw error.

Should probably be more explicit about this in the manual since apparently many users misunderstands this.

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3

at the command prompt of Windows I type

echo hello
and it responds with
hello

echo /? gives the usage of echo in Win 10.

4

echo is an internal command of cmd, not a callable executable in Windows.
Look at the solution to link provided in previous post.

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5

You are vaguely reviving my DOS memories. I understand now, and agree that the documentation should mention the internal commands vs. the external ones that are callable and give the example from the previous post…

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