Hi All,
I have a project that I've been working for awhile that consists of a main bash script that does several things in order including calling a few php scripts (database stuff) and a few Linux commands (find and comm) and then the script ends and I have a nice chunk of data to either ignore or insert into a mysql DB. What I'm trying to do is build a nice little Gambas GUI app that somehow can show me the progress of all this stuff that's happening in that bash script including the php scripts and Linux commands as well as launch the script itself. I'm aware of exec and shell and have used both but in those cases I was never looking to get any output from the scripts. So far my experiments with Shell and "To string" are not working as most times I don't see anything until the scripts is done or I just get nothing back at all or it crashes...etc. Is there a way to see what's going on in in the bash script real time and send to a gambas component like a textarea box? The process is generating a lot of text data so I assume that is a problem somehow.
BTW, I have experimented with just completely writing this project in pure Gambas and eliminating bash, php and Linux commands. The amount of text data generated that I tried getting into textarea components quickly crashed the app so I the experiment didn't last long as that is a show stopper.
Viewing bash/php scripts in real time
- BruceSteers
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Re: Viewing bash/php scripts in real time
Using "To String" with shell implies Wait and the command will not return any results till it is finished.rj71 wrote: ↑Friday 24th May 2024 7:20pm Hi All,
I have a project that I've been working for awhile that consists of a main bash script that does several things in order including calling a few php scripts (database stuff) and a few Linux commands (find and comm) and then the script ends and I have a nice chunk of data to either ignore or insert into a mysql DB. What I'm trying to do is build a nice little Gambas GUI app that somehow can show me the progress of all this stuff that's happening in that bash script including the php scripts and Linux commands as well as launch the script itself. I'm aware of exec and shell and have used both but in those cases I was never looking to get any output from the scripts. So far my experiments with Shell and "To string" are not working as most times I don't see anything until the scripts is done or I just get nothing back at all or it crashes...etc. Is there a way to see what's going on in in the bash script real time and send to a gambas component like a textarea box? The process is generating a lot of text data so I assume that is a problem somehow.
BTW, I have experimented with just completely writing this project in pure Gambas and eliminating bash, php and Linux commands. The amount of text data generated that I tried getting into textarea components quickly crashed the app so I the experiment didn't last long as that is a show stopper.
Use a Process handler with your Shell or Exec command
Then read the output in the Process_Read() event
Something like this... (edited)
Private hProc As Process
Public Sub RunScript()
hProc = Shell "/path/to/bash_script" For Input As "PROC"
End
Public Sub PROC_Read()
Dim sOutput As String
sOutput = Read #Last, Lof(Last)
Print sOutput
End
If at first you don't succeed , try doing something differently.
BruceS
BruceS
Re: Viewing bash/php scripts in real time
Thanks Bruce! That's what I'm looking for although I think I may have done a poor job of asking my question. I'm looking for what your code does but printing it to a component (textarea...label?) on the form instead of the IDE console and seeing that data zipping by in real time. Maybe I'm approaching this the wrong way.BruceSteers wrote: ↑Friday 24th May 2024 7:50pmUsing "To String" with shell implies Wait and the command will not return any results till it is finished.rj71 wrote: ↑Friday 24th May 2024 7:20pm Hi All,
I have a project that I've been working for awhile that consists of a main bash script that does several things in order including calling a few php scripts (database stuff) and a few Linux commands (find and comm) and then the script ends and I have a nice chunk of data to either ignore or insert into a mysql DB. What I'm trying to do is build a nice little Gambas GUI app that somehow can show me the progress of all this stuff that's happening in that bash script including the php scripts and Linux commands as well as launch the script itself. I'm aware of exec and shell and have used both but in those cases I was never looking to get any output from the scripts. So far my experiments with Shell and "To string" are not working as most times I don't see anything until the scripts is done or I just get nothing back at all or it crashes...etc. Is there a way to see what's going on in in the bash script real time and send to a gambas component like a textarea box? The process is generating a lot of text data so I assume that is a problem somehow.
BTW, I have experimented with just completely writing this project in pure Gambas and eliminating bash, php and Linux commands. The amount of text data generated that I tried getting into textarea components quickly crashed the app so I the experiment didn't last long as that is a show stopper.
Use a Process handler with your Shell or Exec command
Then read the output in the Process_Read() event
Something like this...
Private hProc As Process Public Sub RunScript() hProc = Shell "/path/to/bash_script" For Output As "PROC" End Public Sub PROC_Read() Dim sOutput As String sOutput = Read #Last, Lof(Last) Print sOutput End
Re: Viewing bash/php scripts in real time
I just found some of Bruce's examples in another thread. I'm going to check those out now.
- BruceSteers
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- Contact:
Re: Viewing bash/php scripts in real time
Okay (edited)
Private hProc As Process
Public Sub RunScript()
hProc = Shell "/path/to/bash_script" For Input As "PROC"
End
Public Sub PROC_Read()
Dim sOutput As String
sOutput = Read #Last, Lof(Last)
TextArea1.Insert(sOutput)
TextArea1.EnsureVisible
End
If at first you don't succeed , try doing something differently.
BruceS
BruceS
Re: Viewing bash/php scripts in real time
This is strange. I tried your new code and it's still printing to console even though "Print sOutput" is commented out. Nothing is populating the textarea component. I'm not sure what I'm doing wrong. I've been working on this project awhile and the whole thing has been a gigantic headacheBruceSteers wrote: ↑Friday 24th May 2024 8:17pm Okay
Private hProc As Process Public Sub RunScript() hProc = Shell "/path/to/bash_script" For Output As "PROC" End Public Sub PROC_Read() Dim sOutput As String sOutput = Read #Last, Lof(Last) TextArea1.Insert(sOutput) TextArea1.EnsureVisible End
- BruceSteers
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- Joined: Thursday 23rd July 2020 5:20pm
- Location: Isle of Wight
- Contact:
Re: Viewing bash/php scripts in real time
Oops sorry use Input not Output
hProc = Shell "/path/to/bash_script" For Input As "PROC"
hProc = Shell "/path/to/bash_script" For Input As "PROC"
If at first you don't succeed , try doing something differently.
BruceS
BruceS
Re: Viewing bash/php scripts in real time
no prob. works now. Another question though...how much data can be input into a textarea component? In some of my tests, there appears to be a clear limit as it ends up crashing the app but I don't know exactly how much it consumed before it crashed.BruceSteers wrote: ↑Friday 24th May 2024 8:47pm Oops sorry use Input not Output
hProc = Shell "/path/to/bash_script" For Input As "PROC"
- BruceSteers
- Posts: 1624
- Joined: Thursday 23rd July 2020 5:20pm
- Location: Isle of Wight
- Contact:
Re: Viewing bash/php scripts in real time
I didn't know there was a limit, i should think it's huge is there is.rj71 wrote: ↑Friday 24th May 2024 8:58pmno prob. works now. Another question though...how much data can be input into a textarea component? In some of my tests, there appears to be a clear limit as it ends up crashing the app but I don't know exactly how much it consumed before it crashed.BruceSteers wrote: ↑Friday 24th May 2024 8:47pm Oops sorry use Input not Output
hProc = Shell "/path/to/bash_script" For Input As "PROC"
maybe try clearing the textarea if it has grown too large.
Public Sub PROC_Read()
Dim sOutput As String
sOutput = Read #Last, Lof(Last)
if TextArea1.Length>5000 then TextArea1.Clear
TextArea1.Insert(sOutput)
TextArea1.EnsureVisible
End
If at first you don't succeed , try doing something differently.
BruceS
BruceS
Re: Viewing bash/php scripts in real time
Some of the text files the process is generating are huge...like 4 to 5 gig text files. In one test, I tried scanning a drive (that's one part of this project) that had several million files, it went for 5 minutes or so before I got a segmentation fault. I'll try clearing the textarea like you suggest. Thanks Bruce!BruceSteers wrote: ↑Friday 24th May 2024 10:23pmI didn't know there was a limit, i should think it's huge is there is.rj71 wrote: ↑Friday 24th May 2024 8:58pmno prob. works now. Another question though...how much data can be input into a textarea component? In some of my tests, there appears to be a clear limit as it ends up crashing the app but I don't know exactly how much it consumed before it crashed.BruceSteers wrote: ↑Friday 24th May 2024 8:47pm Oops sorry use Input not Output
hProc = Shell "/path/to/bash_script" For Input As "PROC"
maybe try clearing the textarea if it has grown too large.
Public Sub PROC_Read() Dim sOutput As String sOutput = Read #Last, Lof(Last) if TextArea1.Length>5000 then TextArea1.Clear TextArea1.Insert(sOutput) TextArea1.EnsureVisible End