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Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Eliot Miranda

On Mon, May 15, 2017 at 8:09 AM, Damien Pollet <damien.pollet(a)gmail.com> wrote: > My point was, if #shellCommand: accepts a single string for a whole > command, then surely it passes it to a system shell already, so why nest a > bash in between? (effectively running the equivalent of sh -c "bash -c \"ls > ~\"') > Clearly it doesn't do that otherwise Denis wouldn't have found that tile was unexpanded. I agree with you that it should. shellCommand: feels like a misnomer otherwise. > > On 15 May 2017 at 16:28, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > >> Hi Damien, >> >> On May 15, 2017, at 6:44 AM, Damien Pollet <damien.pollet(a)gmail.com> >> wrote: >> >> On 15 May 2017 at 15:26, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: >> >>> Try something like >>> >>> shellCommand: 'bash -c ''ls ~'''; >>> >> >> But then that would run ls inside of bash inside of the system shell >> (/bin/sh), wouldn't it? What's the point? >> >> >> -c's argument is parsed by the shell so one gets full expansion. >> Further, if there are arguments after the string, they are assigned to the >> positional parameters, so that >> >> sh -c 'echo ~/$0' foo >> >> prints /Users/eliot/foo >> >> That may be useful. >> >> >> -- >> Damien Pollet >> type less, do more [ | ] http://people.untyped.org/damien.pollet >> >> > > > -- > Damien Pollet > type less, do more [ | ] http://people.untyped.org/damien.pollet > -- _,,,^..^,,,_ best, Eliot

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Damien Pollet

My point was, if #shellCommand: accepts a single string for a whole command, then surely it passes it to a system shell already, so why nest a bash in between? (effectively running the equivalent of sh -c "bash -c \"ls ~\"') On 15 May 2017 at 16:28, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > Hi Damien, > > On May 15, 2017, at 6:44 AM, Damien Pollet <damien.pollet(a)gmail.com> > wrote: > > On 15 May 2017 at 15:26, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > >> Try something like >> >> shellCommand: 'bash -c ''ls ~'''; >> > > But then that would run ls inside of bash inside of the system shell > (/bin/sh), wouldn't it? What's the point? > > > -c's argument is parsed by the shell so one gets full expansion. Further, > if there are arguments after the string, they are assigned to the > positional parameters, so that > > sh -c 'echo ~/$0' foo > > prints /Users/eliot/foo > > That may be useful. > > > -- > Damien Pollet > type less, do more [ | ] http://people.untyped.org/damien.pollet > > -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by K K Subbu

On Monday 15 May 2017 05:46 PM, Denis Kudriashov wrote: > OSSUnixSubprocess new > shellCommand: 'ls ~'; > redirectStdout; > runAndWaitOnExitDo: [ :process :outString | > ^outString > ]. What exactly are you trying to do? If you want the list of entries in ~ directory, you could use FileDirectory methods: (FileDirectory on: (OSProcess thisOSProcess environmentAt: 'HOME')) entries collect: [ :f | f name ]. Regards .. Subbu

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Eliot Miranda

Hi Damien, > On May 15, 2017, at 6:44 AM, Damien Pollet <damien.pollet(a)gmail.com> wrote: > >> On 15 May 2017 at 15:26, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: >> Try something like >> >> shellCommand: 'bash -c ''ls ~'''; > > But then that would run ls inside of bash inside of the system shell (/bin/sh), wouldn't it? What's the point? -c's argument is parsed by the shell so one gets full expansion. Further, if there are arguments after the string, they are assigned to the positional parameters, so that sh -c 'echo ~/$0' foo prints /Users/eliot/foo That may be useful. > > -- > Damien Pollet > type less, do more [ | ] http://people.untyped.org/damien.pollet

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Damien Pollet

On 15 May 2017 at 15:26, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > Try something like > > shellCommand: 'bash -c ''ls ~'''; > But then that would run ls inside of bash inside of the system shell (/bin/sh), wouldn't it? What's the point? -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Eliot Miranda

> On May 15, 2017, at 5:16 AM, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > > 2017-05-15 14:04 GMT+02:00 Mariano Martinez Peck <marianopeck(a)gmail.com>: >> Denis, you can also have shortcut methods to call shell from OSSubprocess. See the tests under "tests - shell" protocol. > > I tried this: > > OSSUnixSubprocess new > shellCommand: 'ls ~'; > redirectStdout; > runAndWaitOnExitDo: [ :process :outString | > ^outString > ]. Try something like shellCommand: 'bash -c ''ls ~'''; > > And it still returns empty string without error in console. With "ls ../" it works fine

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Denis Kudriashov

2017-05-15 14:04 GMT+02:00 Mariano Martinez Peck <marianopeck(a)gmail.com>: > Denis, you can also have shortcut methods to call shell from OSSubprocess. > See the tests under "tests - shell" protocol. I tried this: OSSUnixSubprocess new shellCommand: 'ls ~'; redirectStdout; runAndWaitOnExitDo: [ :process :outString | ^outString ]. And it still returns empty string without error in console. With "ls ../" it works fine

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Mariano Martinez Peck

Denis, you can also have shortcut methods to call shell from OSSubprocess. See the tests under "tests - shell" protocol. Cheers, On Mon, May 15, 2017 at 8:00 AM, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > 2017-05-15 12:13 GMT+02:00 K K Subbu <kksubbu.ml(a)gmail.com>: > >> ~ is a shell language synonym for $HOME. Both are expanded by the shell >> before calling file syscall in the kernel. Kernel's filename resolver does >> not do ~ or $HOME expansions. >> > > Thanks Subbu :) > -- Mariano http://marianopeck.wordpress.com

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Denis Kudriashov

2017-05-15 12:13 GMT+02:00 K K Subbu <kksubbu.ml(a)gmail.com>: > ~ is a shell language synonym for $HOME. Both are expanded by the shell > before calling file syscall in the kernel. Kernel's filename resolver does > not do ~ or $HOME expansions. > Thanks Subbu :)

May 15, 2017

Re: [Pharo-dev] Does OSSubprocess works on ARM vm?

by Denis Kudriashov

2017-05-15 12:10 GMT+02:00 tesonep(a)gmail.com <tesonep(a)gmail.com>: > Hi Denis, > the ~ (tilde) is expanded by the shell, a running process should expand > it. In the case of the command line tools they don't expand it, as they > expect the shell to expand it before calling. > > Check https://www.gnu.org/software/bash/manual/html_ > node/Tilde-Expansion.html > and http://www.davidverhasselt.com/expanding-a-leading-tilde-in-cc/ > Thank's Pablo

May 15, 2017