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Jeremy

This first post will always contain a link to the latest version of shell.

Shell is a cross-platform object for Max with which you can execute terminal commands. The shell object spawns a new shell process, executes the desired commands and passes stdout (and optionally stderr) back to Max.

https://github.com/jeremybernstein/shell/releases/tag/1.0b3

- arm64 (Apple Silicon) fat binary on macOS

- this is the final release with a 32-bit external for Windows

- OSX: @forkmode now permits switching between fork (default, SSH-compatible) and vfork (better performance under some circumstances)

- OSX: SSH works again (if using fork(), see above)

- Windows: fixes for single-byte code pages on non-ANSI systems

- Windows: Fix for incomplete (prompt) output for Unicode commands.

- OSX: change fork() to vfork() to improve performance and minimize interruption when forking.

- OSX: reset signal masks in the forked process

- update Windows projects for Visual Studio 2015

Shell is a cross-platform object for Max with which you can execute terminal commands. The shell object spawns a new shell process, executes the desired commands and passes stdout (and optionally stderr) back to Max.

Latest version: https://github.com/jeremybernstein/shell/releases/tag/1.0b3

Release notes (1.0b3):
- escape backslashes in output
- arm64 (Apple Silicon) fat binary on macOS
- 32-bit version removed on macOS
- this is the final release with a 32-bit external for Windows

Release notes (1.0b2):
- OSX: @forkmode now permits switching between fork (default, SSH-compatible) and vfork (better performance under some circumstances)
- OSX: SSH works again (if using fork(), see above)
- Windows: fixes for single-byte code pages on non-ANSI systems
- Windows: Fix for incomplete (prompt) output for Unicode commands.

Release notes (1.0b1):
- c++11 rewrite (no functional change)
- OSX: change fork() to vfork() to improve performance and minimize interruption when forking.
- OSX: reset signal masks in the forked process
- update Windows projects for Visual Studio 2015

This first post will always contain a link to the latest version of shell.
Shell is a cross-platform object for Max with which you can execu

shell

sorry i'm late to find this, but... wow! it's quite an undertaking... just wanted to thank you for doing this, Jeremy 🙏 much appreciated 🍺

Thanks for keeping this object alive Jeremy, was just wondering why some of my old patches weren't working until I figured out that aka.shell didn't support 64-bit CPUs.

Anyway, thought I'd point out that I came across this page via https://cycling74.com/tools/bernstein-shell/ which links to the old forum thread first. Nearly downloaded the 2017 version until I decided to skim through the whole page first and found the link to here. Might be worth updating the links :)

thanks for the note, I've updated the link on the tool page.

Does anyone know how to close/quit a specific application or file that is currently open? Via shell (or otherwise if possible).

I'm on windows and I'm able to open the file or application via shell by just sending the directory of it to shell, but would like to be able to close it as well. Tried pkill but that does not seem to take extra arguments.

taskkill or tskill is windows equivalent of unix  pkill

taskkill /IM SomeApp.exe /F

To forcefully kill this process and any child processes started by it  
taskkill /IM SomeApp.exe /T /F

Thank's for this beautiful object !
On os x 10.13 ssh doesn't work (on my computer) 
but on my other computer 10.9 it works fine

any ideas ? Thank's

Thanks for the great and highly useful shell object. 

On Win 10, shell.mxe64 (as of Oct 25 2018) in Max8.0.2 cannot be used on systems set to Asian languages when commands return Asian characters, though. 
For example on Korean systems:
$ ipconfig /all 
crashes Max reliably as the returned data contains Korean characters. 
The 20170717 shell version behaves the same, as does shell.2018 on Japanese localizations. 

Looking into this would be highly appreciated. 

Anyone experiencing difficulties using shell on  Win10 with Asian character sets? 

As this is urgent:
Please drop me a note on how to assist in setting this straight. 

Hi all,

Did anyone on Windows try to control other programming languages from the new shell object?

I develop a pedagogical package called MOZLib, dedicated to computer aided composition and that works as an introduction to the bach & cage packages

A big part of it uses SBCL (www.sbcl.org/platform-table.html) to reactualize composition techniques developed on PatchWork, OpenMusic and PWGL in the 1980s-2000s.
It work beautifully on Mac, but I never had the occasion to test it on PC since Windows 10.

If someone is interested to give me a hand with this, it would be fantastic. I'm planning for a first release around April.

Anyone on OSX who is having SSH issues, please try this version: https://expr-i0.net/shell_ssh.zip 

There is a new attribute @forkmode. For the previous release, shell was forking with 'vfork' in order to eliminate CPU spikes encountered in (for instance) Live when executing certain kinds of scripts. 'vfork' is useful for this, but disables SIGTTOU and SIGTTIN signals in the child process which are used for interactive input in ssh. You can now select either 'fork' (default, works with ssh) or 'vfork' (less overhead when forking, won't work for ssh), and because it's an attribute, you can change it on the fly depending on your needs.

For in-box usage, @forkmode 0 = fork, @forkmode 1 = vfork.

This is OSX-only (the attribute is invisible on Windows and has no effect). If I can get some feedback, I'll roll the changes into an updated release above.

Coming back to the difficulties using shell on  Win10 with Asian character sets which should be resolved asap. 

Setting Win10 to e.g. Korean (and back) is just 2 steps: 
- in Win10  Settings/Time&Language, select Region&language, click Add a language, select Korean, in the Korean field click the Options button and DL the typing pack, click Set as default
- right-click the Start menu, open Powershell in Admin mode, type "Set-WinSystemLocale ko-KR"
- reboot 

- in command type e.g. "ipconfig /all"; you should see Asian characters in the output
- open shell.maxhelp and send the same command, over here Max8 crashes

- to get back to English: in Win10  Settings select English, click Set as default
- open Powershell in Admin mode, type "Set-WinSystemLocale en-US"
- reboot

Thanks for setting this straight. 

Torsten, it's a free, unsupported and (if you want to try figuring it out yourself) open-source external. I certainly understand your frustration, but it will be resolved when there's time to devote to setting up a system for korean and figuring out the problem. A much more common and pressing issue -- broken SSH on OSX -- took a couple of months to get around to, so thanks for your patience.

That all said, thanks for the reproduction steps, which will help with the above. Not sure when I'll be able to look at it, though.

Sure, perfectly understood. 
Thanks again for the great object and your support. 


@torsten, please test https://expr-i0.net/shell_win_190219.zip and let me know how it goes. Turned out to be a pretty annoying issue involving non-Unicode, single-bytes Windows code pages (charsets). Seems to be working for me now.

Tested shell_win_190219.mxe64 on Win10. 
- shell works on en-US system as before
- when set to ko-KR (Korean) as described above shell processes Asian characters without the slightest hitch
- tested commands: ipconfig /all, arp -a, getmac, ping /n 1 localhost

- of no significance,  just for the record, sending the command "date" to shell prints the output twice; then shell does not react to any further commands. Same behavior on both Win10 en-US and ko-KR. And same behavior as in the previous (1.0b1) version of shell. 

@torsten, good call on 'date', there was a bug in handling incomplete (e.g. prompt) lines in Unicode output. Will be fixed in the next one, which will be posted to github momentarily.

Long shot, but did anyone figure out how to use virtual environment with Python under shell?

I've been trying to trigger some npm code which works fine in Terminal, but I get no response in shell. Might there be some issue where I have to load dependencies or something (it works from scratch in Terminal)?

how would I form a message if I need to send my user password to shell? RTFM link is fine, too.

example on OSX 
echo 'pass' | sudo -S mkdir ~/AAA

That will make folder named AAA  on desktop with admin pass
pass is Your password
| between pass and sudo is vertical slash , ascii 124

thanks, creating a directory works. would you know why this doesn't work for me:
echo 'password' | sudo spctl --master-disable

i also tried:
sudo spctl --master-disable
and then in a separate message:
echo 'password'


try :
echo 'pass' | sudo -S spctl --master-disable

I had no High Sierra at hand to confirm that above message to shell works,
but now I tested it and it works as expected.
Enabling / disabling gatekeeper works.
So You must have some other problem.
I used last published shell version at the top of this thread.


ok good to know. i will find it eventually. it'll just take some time as i am a terminal dork. i will report my findings.

Maybe You have system integrity protection (SIP) enabled ?
You can test things using Terminal first, and if it works there,
than it should also in  shell.


helvete-6:~ pureold$ csrutil status
System Integrity Protection status: enabled.

'spctl --master-disable' alwaysworks in the terminal but not through shell. I haven't found the right way to send my pwd and 'spctl --master-disable' in one message to the shell.

echo 'AAA123' | sudo -S spctl --master-disable

this is precisely what doesn't work for me. that's my problem

I can't explain it, I do have SIP disabled though, but I don't think that
turning gatekeeper off requires SIP to be disabled.



This is working for me, and is no different than what you're trying to do.

$ csrutil status
System Integrity Protection status: enabled.

What has to be mentioned is that if one sends sudo message to shell
without providing the password, shell will wait forever for the password input,
and will not execute any commands.
One has to close and reopen patch, sometimes even restart max
to get it going again.
To confirm that password is set correctly send this to shell:
echo 'pass' | sudo -S whoami  ( put correct password in)
should output root
message whoami should output user name
----------
Is the password the problem ?
Try temporary changing the password to something simple,
like a single letter, just to make sure, and avoid spaces.
And don't use terminal and max with shell at same time.
sudo -K command can be used in terminal to clear password
cache which gets stored after initial entry for a limited time.
Don't know what else to suggest to troubleshoot the problem


Hi Jeremy! Great work with this shell object! Really saved my day :)
I would simply suggest an update: adding alias.
I was trying to run this in order to test something like firmware updates directly from a Max patch.
Using the alias method on the shell was simply not reacting (no errors, but also not uploading the arduino file).
I was able to do it replacing the alias with the file path.
Although this is fine for me, I can imagine some people running into troubles if they have huge file paths for their implementations.
Anyway...great job! 
Thank you

Hi,  every time you send a command to 'shell', it's creating a new login shell, so you don't have persistence (or crosstalk, if you like) between invocations. You can probably add that alias to your .bashrc such that it works every time you use 'shell', although I haven't tested it. Glad the object is working for you!

Hello,
I'm trying to launch some Processing patches via the shell object using the command line installation of Processing.  However, the shell object shows no reaction to the command "processing-java" or to full commands like "processing-java --sketch=<filepath> --run".  It also didn't print anything in reaction to "processing-java --help".  All other commands have been working fine ("echo", "pwd", etc. all printed expected results).
The workaround that I thought of was to store the processing launch command in a .sh file, and launch the .sh via the shell object, but I can't seem to get any .sh files to launch either.
Any recommendations on what to look into? Is this even possible via the shell object?
This object has otherwise served me very well in the past!
Thanks

EDIT-September 9:
Okay, I think the main issue was message formatting in Max.  I've gotten shell to successfully launch shell scripts by opening them in Terminal. (open -a Terminal \"<path-to-.sh-file>\") passed as a message into shell opens a terminal window and runs the script.  Not a perfect solution but it works.
Another possibility is to export all of the Processing sketches as applications, and launch them using the "open" command in a similar way.

HI Jeremy-
i am trying to us the shell object to convert some video files automatically in Max - and when i feed the following line into a terminal window (on a mac) - it works fine - but when i try this ins MAX then i get no response - and for the life of me i cant figure out why... does shell not work with ffmpeg? or is there some other reason that i just dont see? i am passing the following line as a message to the shell object:
ffmpeg -i /Users/OP/Desktop/Top_View_Camera/20191024_S3_EQ_OHD_Trial01.mkv -vcodec copy -acodec copy /Users/OP/Desktop/Top_View_Camera/20191024_S3_EQ_OHD_Trial01.mp4

any suggestions are greatly appreciated !
thx

send full path to ffmpeg binary to shell.
And use slash based path.


Thank you Source Audio! ;) solved my problem! ;) greatly appreciated!!

now i do have another question that i cant seem to solve:
shell is calling a new  terminal session each time a message is sent to it - i get that -this means that i cant call a for loop in terminal as a usually would since each line would call a new terminal. if i want to convert the above mentioned mkv videos to Mp4 videos - then i was thinking i could (since the number of videos created will vary dependent on the numbers of trials) read the folder with the folder object and then selected ONLY the mkv flies to process - but i cant seem to find how to filter the list only to *.mkv - the selectable type does not include mkv  file - so how do i just search for a text tring and use that as filter ? the individual names of the file wikll change of course - so i want to pass each individual file name to the shell object for conversion via ffmpeg. 
what am i missing?

You need to add .mkv filetype to Max filetypes
in order to be able to filter that type of file in umenu
autopopulate, dropfile filetype etc.
Either add a line in max-fileformats.txt  which is the best option,
max fileformat .mkv MKVF 0 Video moviefile;
or by loadbanging a message :
;
max fileformat .mkv MKVF
What I don't know what 4 char id should be used for that type of file,
maybe MKVF would do.
Adding a line in max-formats.txt is a better option, because
it will work form the first max start.
Doing this by message from max standalone, would need 
standalone restart to make new filetype active.


P.S. of course You could build a full list of found items,
and then copy only *.mkv files to a new list,
doing some regex or similar, but that's
not prefered way.


Hey Source Audio -
great - did not know that i could edit the list of file types - i will try that! ;)

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