Re: [julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tom Short]

I use `cd` under shell on Linux, too. It's a nice shortcut.

On Wed, Jan 20, 2016 at 11:20 AM, J Luis  wrote:

> On Windows one can
>
> julia> pwd()
> "C:\\programs\\Julia-0.4"
>
> shell> cd
> C:\j
>
> julia> pwd()
> "C:\\j"
>
> quarta-feira, 20 de Janeiro de 2016 às 15:45:04 UTC, Yichao Yu escreveu:
>>
>> On Wed, Jan 20, 2016 at 10:39 AM, Tony Kelman  wrote:
>> > Julia has portable functions for all of these, you don't need to use
>> shell
>> > mode for cd, dir, readdir, mkdir, rm, mv, or cp.
>>
>> FWIW, you can't use shell for `cd` on any platforms supported by julia.
>>
>> >
>> >
>> >
>> > On Wednesday, January 20, 2016 at 4:56:07 AM UTC-8, Andreas Lobinger
>> wrote:
>> >>
>> >> Hello colleague,
>> >>
>> >> On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman
>> wrote:
>> >>>
>> >>> Unix shell commands that we happened to be getting from git are no
>> longer
>> >>> on Julia's path. This is not temporary. Windows is not unix. If you
>> want to
>> >>> use unix shell commands on windows, either download and add your own
>> windows
>> >>> posix layer to your path (temporarily in juliarc, not permanently
>> where it
>> >>> will break other software), or call powershell which has many aliases
>> >>> spelled the same as unix shell commands.
>> >>
>> >>
>> >> i agree, windows is not unix (it never was) and the following might
>> not be
>> >> helpful, but
>> >> Matlab provides (on any OS) a very small set of shell-like commands
>> (cd,
>> >> dir, ls,mkdir, rmdir,  delete, movefile, copyfile).
>> >>
>> >> And providing something like this at a julia REPL should be considered
>> >> user friendly.
>> >>
>> >> Wishing a happy day,
>> >>Andreas
>> >>
>>
>

Re: [julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Yichao Yu]

On Wed, Jan 20, 2016 at 10:39 AM, Tony Kelman  wrote:
> Julia has portable functions for all of these, you don't need to use shell
> mode for cd, dir, readdir, mkdir, rm, mv, or cp.

FWIW, you can't use shell for `cd` on any platforms supported by julia.

>
>
>
> On Wednesday, January 20, 2016 at 4:56:07 AM UTC-8, Andreas Lobinger wrote:
>>
>> Hello colleague,
>>
>> On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman wrote:
>>>
>>> Unix shell commands that we happened to be getting from git are no longer
>>> on Julia's path. This is not temporary. Windows is not unix. If you want to
>>> use unix shell commands on windows, either download and add your own windows
>>> posix layer to your path (temporarily in juliarc, not permanently where it
>>> will break other software), or call powershell which has many aliases
>>> spelled the same as unix shell commands.
>>
>>
>> i agree, windows is not unix (it never was) and the following might not be
>> helpful, but
>> Matlab provides (on any OS) a very small set of shell-like commands (cd,
>> dir, ls,mkdir, rmdir,  delete, movefile, copyfile).
>>
>> And providing something like this at a julia REPL should be considered
>> user friendly.
>>
>> Wishing a happy day,
>>Andreas
>>

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

Julia has portable functions for all of these, you don't need to use shell 
mode for cd, dir, readdir, mkdir, rm, mv, or cp.


On Wednesday, January 20, 2016 at 4:56:07 AM UTC-8, Andreas Lobinger wrote:
>
> Hello colleague,
>
> On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman wrote:
>>
>> Unix shell commands that we happened to be getting from git are no longer 
>> on Julia's path. This is not temporary. Windows is not unix. If you want to 
>> use unix shell commands on windows, either download and add your own 
>> windows posix layer to your path (temporarily in juliarc, not permanently 
>> where it will break other software), or call powershell which has many 
>> aliases spelled the same as unix shell commands.
>
>
> i agree, windows is not unix (it never was) and the following might not be 
> helpful, but 
> Matlab provides (on any OS) a very small set of shell-like commands (cd, 
> dir, ls,mkdir, rmdir,  delete, movefile, copyfile).
>
> And providing something like this at a julia REPL should be considered 
> user friendly.
>
> Wishing a happy day,
>Andreas
>  
>

Re: [julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[J Luis]

On Windows one can

julia> pwd()
"C:\\programs\\Julia-0.4"

shell> cd
C:\j

julia> pwd()
"C:\\j"

quarta-feira, 20 de Janeiro de 2016 às 15:45:04 UTC, Yichao Yu escreveu:
>
> On Wed, Jan 20, 2016 at 10:39 AM, Tony Kelman  > wrote: 
> > Julia has portable functions for all of these, you don't need to use 
> shell 
> > mode for cd, dir, readdir, mkdir, rm, mv, or cp. 
>
> FWIW, you can't use shell for `cd` on any platforms supported by julia. 
>
> > 
> > 
> > 
> > On Wednesday, January 20, 2016 at 4:56:07 AM UTC-8, Andreas Lobinger 
> wrote: 
> >> 
> >> Hello colleague, 
> >> 
> >> On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman wrote: 
> >>> 
> >>> Unix shell commands that we happened to be getting from git are no 
> longer 
> >>> on Julia's path. This is not temporary. Windows is not unix. If you 
> want to 
> >>> use unix shell commands on windows, either download and add your own 
> windows 
> >>> posix layer to your path (temporarily in juliarc, not permanently 
> where it 
> >>> will break other software), or call powershell which has many aliases 
> >>> spelled the same as unix shell commands. 
> >> 
> >> 
> >> i agree, windows is not unix (it never was) and the following might not 
> be 
> >> helpful, but 
> >> Matlab provides (on any OS) a very small set of shell-like commands 
> (cd, 
> >> dir, ls,mkdir, rmdir,  delete, movefile, copyfile). 
> >> 
> >> And providing something like this at a julia REPL should be considered 
> >> user friendly. 
> >> 
> >> Wishing a happy day, 
> >>Andreas 
> >> 
>

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Andreas Lobinger]

Hello colleague,

On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman wrote:
>
> Unix shell commands that we happened to be getting from git are no longer 
> on Julia's path. This is not temporary. Windows is not unix. If you want to 
> use unix shell commands on windows, either download and add your own 
> windows posix layer to your path (temporarily in juliarc, not permanently 
> where it will break other software), or call powershell which has many 
> aliases spelled the same as unix shell commands.


i agree, windows is not unix (it never was) and the following might not be 
helpful, but 
Matlab provides (on any OS) a very small set of shell-like commands (cd, 
dir, ls,mkdir, rmdir,  delete, movefile, copyfile).

And providing something like this at a julia REPL should be considered user 
friendly.

Wishing a happy day,
   Andreas
 

Re: [julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Páll Haraldsson]

On mið 20.jan 2016 12:56, Andreas Lobinger wrote:

Hello colleague,

On Wednesday, January 13, 2016 at 11:28:39 PM UTC+1, Tony Kelman wrote:

Unix shell commands that we happened to be getting from git are no
longer on Julia's path. This is not temporary. Windows is not unix.
If you want to use unix shell commands on windows, either download
and add your own windows posix layer to your path (temporarily in
juliarc, not permanently where it will break other software), or
call powershell which has many aliases spelled the same as unix
shell commands.


i agree, windows is not unix (it never was) and the following might not
be helpful, but
Matlab provides (on any OS) a very small set of shell-like commands (cd,
dir, ls,mkdir, rmdir,  delete, movefile, copyfile).


Just to be clear, is this issue about shell access in the REPL, or for 
run() ?


If only in the REPL, as for convenience, for interactive use, I see not 
problem with accessing the cmd or powershell (latter better? does it or 
former have a good subset of compatibility, e.g. with the subset above?) 
on Windows and bash in Linux/Unix for e.g.:


for i in $( ls ); do
  echo item: $i
done

that didn't work, and I wouldn't expect to work in Windows (but I would 
in Unix).



And providing something like this at a julia REPL should be considered
user friendly.


Exactly, but only in the REPL. If run() would allow access to a shell, 
then incompatibility comes in, in full force or we would promise to 
provide one (e.g. bash) for Unix compatibility - and it would be a bad idea.


--
Palli.

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Jason Bates]

>
> Unix shell commands that we happened to be getting from git are no longer 
> on Julia's path. This is not temporary. Windows is not unix. If you want to 
> use unix shell commands on windows, either download and add your own 
> windows posix layer to your path (temporarily in juliarc, not permanently 
> where it will break other software), or call powershell which has many 
> aliases spelled the same as unix shell commands.


This is disappointing.  I understand the compatibility issues raised above, 
but losing this feature on windows is not a change for the better.  I'm not 
asking windows to be unix, but access to shell commands of some sort would 
be nice.  There's very little difference between ;ls and ;dir, but there is 
a significant different between ;dir and run(`cmd dir`).

Just to be sure, do you mean iPython with Python? Or Jupyther a fork of it, 
> that works with Julia (and python)?


Specifically, I am referring to a Jupyter notebook running an Anaconda 
Python 3.5 kernel, versus that same notebook running a Julia 0.4.2 kernel 
on Windows 10.  With the Python kernel active, the shell magic command %ls 
works.  With the Julia kernel running, ;ls fails (as does ;dir, or any 
other call to a shell command).

Jason

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

If you can suggest a non-GPL-licensed method of obtaining coreutils, I'd be 
open to incorporating it somehow. I'm planning on putting together a few 
packages (where GPL isn't quite as much of an issue) that provide 
convenience wrappers around busybox-w32 or powershell, but haven't devoted 
much time to it yet.

A temporary measure you can do is add ENV["PATH"] *= joinpath(JULIA_HOME,"..
","Git","usr","bin")
in your juliarc. This will prevent Julia from starting inside Cygwin or 
MSYS2, which is why I'm reluctant to make this default behavior.


On Tuesday, January 19, 2016 at 4:15:45 PM UTC-8, Jason Bates wrote:
>
> Unix shell commands that we happened to be getting from git are no longer 
>> on Julia's path. This is not temporary. Windows is not unix. If you want to 
>> use unix shell commands on windows, either download and add your own 
>> windows posix layer to your path (temporarily in juliarc, not permanently 
>> where it will break other software), or call powershell which has many 
>> aliases spelled the same as unix shell commands.
>
>
> This is disappointing.  I understand the compatibility issues raised 
> above, but losing this feature on windows is not a change for the better. 
>  I'm not asking windows to be unix, but access to shell commands of some 
> sort would be nice.  There's very little difference between ;ls and ;dir, 
> but there is a significant different between ;dir and run(`cmd dir`).
>
> Just to be sure, do you mean iPython with Python? Or Jupyther a fork of 
>> it, that works with Julia (and python)?
>
>
> Specifically, I am referring to a Jupyter notebook running an Anaconda 
> Python 3.5 kernel, versus that same notebook running a Julia 0.4.2 kernel 
> on Windows 10.  With the Python kernel active, the shell magic command %ls 
> works.  With the Julia kernel running, ;ls fails (as does ;dir, or any 
> other call to a shell command).
>
> Jason
>

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

If you can suggest a non-GPL-licensed method of obtaining coreutils, I'd be 
open to incorporating it somehow. I'm planning on putting together a few 
packages (where GPL isn't quite as much of an issue) that provide 
convenience wrappers around busybox-w32 or powershell, but haven't devoted 
much time to it yet.

A temporary measure you can do is add ENV["PATH"] *= ";" * joinpath
(JULIA_HOME,"..","Git","usr","bin")
in your juliarc. This will prevent Julia from starting inside Cygwin or 
MSYS2, which is why I'm reluctant to make this default behavior.

(was missing the semicolon in the suggested code snippet first time around, 
sorry)

On Tuesday, January 19, 2016 at 4:15:45 PM UTC-8, Jason Bates wrote:
>
> Unix shell commands that we happened to be getting from git are no longer 
>> on Julia's path. This is not temporary. Windows is not unix. If you want to 
>> use unix shell commands on windows, either download and add your own 
>> windows posix layer to your path (temporarily in juliarc, not permanently 
>> where it will break other software), or call powershell which has many 
>> aliases spelled the same as unix shell commands.
>
>
> This is disappointing.  I understand the compatibility issues raised 
> above, but losing this feature on windows is not a change for the better. 
>  I'm not asking windows to be unix, but access to shell commands of some 
> sort would be nice.  There's very little difference between ;ls and ;dir, 
> but there is a significant different between ;dir and run(`cmd dir`).
>
> Just to be sure, do you mean iPython with Python? Or Jupyther a fork of 
>> it, that works with Julia (and python)?
>
>
> Specifically, I am referring to a Jupyter notebook running an Anaconda 
> Python 3.5 kernel, versus that same notebook running a Julia 0.4.2 kernel 
> on Windows 10.  With the Python kernel active, the shell magic command %ls 
> works.  With the Julia kernel running, ;ls fails (as does ;dir, or any 
> other call to a shell command).
>
> Jason
>

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

Another useful option is called busybox-w32. It's a small ~400kb exe that works 
like busybox on linux, where you can call it as many different coreutils 
functions. The shell it implements is ash rather than full featured bash, but 
posix shell scripts that don't use bashisms should run fine.

We used to include a copy of busybox-w32 with julia for the sake of passing 
some of the spawn tests, but took it out as it's not necessary with git 2.x. 
Busybox is GPL licensed so it's probably better to put in a package.

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

You can manually go through a shell via `cmd /C echo hello`, or better 
(slower to start but much more sane and useful) `powershell -Command "echo 
hello"`


On Tuesday, January 12, 2016 at 7:36:08 PM UTC-8, Jason Bates wrote:
>
> Hi All,
>
> I am having issues executing shell commands from within Julia (either in 
> the REPL or via the iJulia notebook) on Windows 10.  I can run actual 
> programs from within Julia, but all attempts at executing shell commands 
> produce an error.
>
> For instance, the example from the documentation:
>
> julia> run(`echo hello`)
>
> produces
>
> julia> run(`echo hello`)
> ERROR: could not spawn `echo hello`: no such file or directory (ENOENT)
>  in _jl_spawn at process.jl:262
>
> I get the same result using the semi-colon shortcut, both in the REPL and 
> within iJulia.
>
> However, I am able to call windows programs from within Julia 
> successfully.  For instance, 
>
> julia> run(`notepad`)
>
> successfully spawns a notepad window.
>
> Has anyone else run into this or similar issues on Win10?  Google searches 
> have turned up empty.  Further, the issue appears to be exclusive to Julia; 
> shell magic commands within iPython still execute correctly.
>
>
> Thanks,
>
> Jason Bates
>

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[Tony Kelman]

Unix shell commands that we happened to be getting from git are no longer on 
Julia's path. This is not temporary. Windows is not unix. If you want to use 
unix shell commands on windows, either download and add your own windows posix 
layer to your path (temporarily in juliarc, not permanently where it will break 
other software), or call powershell which has many aliases spelled the same as 
unix shell commands.

[julia-users] Re: Shell commands in Julia 0.4.2 in Windows 10

[hustf]

I for one really miss the shell commands, which disappeared with 0.4.2. 

Fortunately, cd still works, but that's about it. pwd() inside of Julia is 
not so bad, but you soon tire of typing readdir()  instead of just ;ls. If 
there are more than a few files in the directory, the output is truncated, 
too. For new users testing Julia from the documentation this gives a pretty 
bad impression.

Fortunately, this seems to be a temporary state of affairs, and with the 
new git library integrated with Julia, the package system will be a lot 
faster, too. There is an explanation in the thread below. Just don't follow 
the (my) advice and cut down your PATH. If you meet problems with it, try 
rearranging the PATH variable or put the julia and atom paths in the 
"system" and not "user" part of the definition. You need to be logged in to 
an administrator account to change the system PATH definitions, I believe.

You will likely see less issues than I did with the PATH since Juno/ Atom/ 
Lighttable (or whatever it's really called) is now updated and gives more 
flexibility.

https://groups.google.com/forum/#!searchin/julia-users/powershell/julia-users/pHonnw8X3iw/Vcbuj5amAwAJ