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PowerShell is open sourced and is available on Linux

azure.microsoft.com

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Re: PowerShell is open sourced and is available on Linux

#661

Post by deno »

cyphar wrote: post #538
deno wrote: post #505

Earlier quoted context omitted.

They might be open, but there’s democracy and then there’s democracy. See for example recent MSBuild incident (but don’t try to argue about it it’s just an example). As I said, it’s a feeling. The feeling is it’s Microsoft’s project, everyone else is along for a ride. And that’s fine, but it’s something different. Let’s just not pretend technical merits drive adoption, that’s rarely true.

> They might be open, but there’s democracy and then there’s democracy. See for example recent MSBuild incident (but don’t try to argue about it it’s just an example). > As I said, it’s a feeling. The feeling is it’s Microsoft’s project, everyone else is along for a ride. And that’s fine, but it’s something different. Let’s just not pretend technical merits drive adoption, that’s rarely true. Uhm. So many free softwa…

I was too harsh with the ‘open-source as-documentation’ term.

My point is this is just not enough to compete with JVM, which is already a vibrant open-source ecosystem.

Re: PowerShell is open sourced and is available on Linux

#662

Post by UK-AL »

bad_user wrote: post #645
UK-AL wrote: post #404

Earlier quoted context omitted.

http://fsharp.github.io/FAKE/

No, FAKE is not a replacement for Maven. As I said, .NET is left behind in the Ant/Make era. And since you mentioned an F# project, the absence of a Maven-like build, dependency management and deployment tool is why F#'s Javascript compilers are behind, because you have no shared infrastructure, no cross-compiled libraries, etc, because it's just too painful to do it.

Why isnt it a replacement.

NuGet/Packet for dependencies.

Octopus/Web Deploy etc for deployment.

All of which can be used from this tool.

Re: PowerShell is open sourced and is available on Linux

#663

Post by userbinator »

tonyedgecombe wrote: post #660
gpvos wrote: post #657

Earlier quoted context omitted.

Passing CSV around can be a useful middle ground, if you're using utilities that all do proper escaping and allow newlines in strings etc., such as csvkit.

What is proper escaping for CSV?

RFC4180.

Re: PowerShell is open sourced and is available on Linux

#664

Post by jve »

daveloyall wrote: post #251
Klathmon wrote: post #171

Earlier quoted context omitted.

I wrote a bash script to sort processes by age on an old redhat 4 machine. What sounded like a very simple thing, quickly ended up being a complete nightmare of bash, python, and an unholy bunch of linux commands. It was ugly, and a terrible way of doing it, but we got it working. It would have been amazing if i could pipe PS into something that could sort by the dates on the 4th column, and return the last column in…

Pretty sure the section in the `ps` man page called OBSOLETE SORT KEYS indicates that even the `ps` on very old redhat machines could do this out of box... see the field `start_time`. Failing that, consider the `etimes` field (seconds since process was started) used in conjunction with the -o feature (control output format) so you can put `etimes` up front then simple pipe the output to `sort`. Those things being sai…

PowerShell was released after Win2k3, however you could install it on Win2k3/XP, even PowerShell 2 afterwards: https://support.microsoft.com/en-us/kb/968929

Re: PowerShell is open sourced and is available on Linux

#665

Post by gpvos »

tonyedgecombe wrote: post #660
gpvos wrote: post #657

Earlier quoted context omitted.

Passing CSV around can be a useful middle ground, if you're using utilities that all do proper escaping and allow newlines in strings etc., such as csvkit.

What is proper escaping for CSV?

The problem is that not all tools agree on this one, but: lines are separated by newlines, items are separated by commas. An item can be quoted (and this must be done if it contains a newline, comma, or double quote) by surrounding them with double quotes. Inside such quoted items, double quotes can be escaped by doubling them.

Re: PowerShell is open sourced and is available on Linux

#666

Post by NetStrikeForce »

jodrellblank wrote: post #635
bitwize wrote: post #375

Get-CobolFingers -Variant=Microsoft -Payoff=MuchLessThanAdvertised

Get-Cob{tab}{tab} -v{tab} M{tab} -P{tab}{tab} M{tab} cmdlet long parameter names both a) work if you type "the shortest non-clashing prefix", and b) tab complete. And if a parameter takes an enumeration you can tab complete those, too. Which is incredibly nicer than usage: somecmd -umhcglsrfmh line noise and man page lookups.

Actually, you can ctrl+space in latest versions to get a list of parameters (or values if the parameter takes an enumeration) you can scroll around with the arrow keys :)

Re: PowerShell is open sourced and is available on Linux

#667

Post by to3m »

tracker1 wrote: post #649
Const-me wrote: post #563

Earlier quoted context omitted.

Live objects don’t usually expose any protocols at all. They only expose an ABI. Do you know any platform-agnostic OO ABI, besides what’s in .NET? If you’ll wrap your objects into some platform-agnostic protocol like JSON, you gonna waste enormous amount of CPU time parsing/formatting those streams at the object’s boundaries.

You can run streams of many millions of JSON objects pretty much as fast as the IO can feed it... most of the time, in situations like this, you're constrained by IO speed, not CPU... assuming you are working with a stream that has flow control. I tend to dump out data structures to line terminated JSON, and it works out really well for streams, can even gz almost transparently. Parse/stringify has never been the bot…

And just think how much faster it would be if there were no serialization and I/O involved at all...

Re: PowerShell is open sourced and is available on Linux

#668

Post by dagw »

scarygliders wrote: post #150
satysin wrote: post #63

Earlier quoted context omitted.

I feel that principle is true from all high-level languages as you move down the chain. Shell scripts should be 1-20 lines. Python/Ruby/whatever for 20-100 and compiled for anything >100.

Respectfully disagree. I've been writing full-on applications using Python and Qt4 which are well over 100 lines of code.

Me too. And personally I'm somewhat conflicted as to whether or not it's a good idea. On the one hand I love python and use it for virtually all code I write (that doesn't have to run in a browser) and I'm quite convinced that for what I'm doing it's the most efficient language for me to use. On the other hand I have found myself on more than one occasion really wishing python wasn't quite so dynamic when working on large python code bases and if I was starting a new large desktop application today I'm not sure python would be my first choice. There really is something to be said for a better/stricter type system.

Re: PowerShell is open sourced and is available on Linux

#669

Post by NetStrikeForce »

elchief wrote: post #395

`cat youCantBeWorseThanCmdRight.utf8.txt > openMeAfter.txt` in PowerShell and cmd, and tell me how good posh is now go tail a 1GB file in posh and bash and tell us your results

Parsing text is unfortunately not one posh's strenghts... but one of the beauties of posh is that you can very easily include .NET classes, so you could e.g. use the System.IO.StreamReader class https://rkeithhill.wordpress.com/2008/03/02/nothings-perfect...

On the other hand, with posh I could ingest a json file and convert it into an object (or an array of) with ConvertTo-JSON. Once I've got the object, I can query/navigate it instead of parsing it. I'm not sure it is that easy with bash, but then again they are not mutually exclusive, so it's great to have both now on Linux and on Windows.

Re: PowerShell is open sourced and is available on Linux

#670

Post by janoc »

fsloth wrote: post #601
vardump wrote: post #519

Earlier quoted context omitted.

I mostly run it on a Xeon workstation with 32 GB RAM, SSD, Nvidia K5000, etc. I think you can call it a modern machine. Other software runs fast. I don't have any third party software installed on top of VS2015. Only unusual aspect is that I also have several other Visual Studio versions installed, like VS2008, VS2010, VS2012 and VS2013. I also have many Windows SDK and DDK (driver devkit) versions. But that shouldn'…

I run it at work on Xeon with SSD and 16 GB. Project sizes might be different. I don't have experience how the performance would scale with a project with tens of millions of lines of code, for example. (seems to be fine for me below that). It does exhibit strange behaviour (including becoming suddenly very tardy) that only goes away by deleting the local cache files (intellisense db and whatnot) so I'm not claiming…

It is meaningless to make such comparisons unless you also compare codebase sizes. VS is perfectly zippy if you have a small project - but try to hit CTRL+SPACE to complete an Unreal Engine or OpenCV identifier! You will be sitting there for 30 seconds or longer while VS is busy parsing/searching files ...
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