use data from another exe (cmd)

M

Mr_Gee

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• Oct 7, 2009

• #1

I'd like to use the data generated by cmd.exe in my desktop application,
is this possible...?

I've tried to search the forum, but i couldn't find any concrete answers


thanks

 

Erel

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• Oct 7, 2009

• #2

Are these two separate process which need to communicate?

 

M

Mr_Gee

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• Oct 7, 2009

• #3

Well..yes
i'd like to get the output (the text that normally is written in the cmd window)
e.g. when i run shell("cmd.exe","ping 192.x.y.z")
i'd like the result in a b4p variable( or object)
This is possible with PHP, it would be very cool if B4P could also do this

 

Erel

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• Oct 8, 2009

• #4

You can create a small batch file with the command:
ping 192.x.x.x > 1.txt

Then run the batch file with Shell. The output will be saved to 1.txt.

 

M

mjcoon

Well-Known Member

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• Oct 8, 2009

• #5

I have a vague recollection that you used to be able to put two commands into the shell on one line, delimited by the "pipe" character (=|), so called because it pipes the stdout of the 1st command to the stdin of the second. I think this was borrowed from Unix. Early usage: "type <file-name> | more"

Would it work with calling a Basic4PPC executable and would that transfer sufficient data in this case?

Mike.

 

M

Mr_Gee

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• Oct 9, 2009

• #6

Interesting Mike,
but wouldn't that output the result to a new exe in stead of the application initiating the cmd?

Erel, this is the code for php

B4X:

<?php

    $cmd = "C:\WINDOWS\system32\ping.exe ping 10.16.2.102 -n 1 && exit";        
    exec($cmd, $output);
    print_r($output);
?>

the code is similar to B4P, the only exception is print_r which basically shows the complete array "$output" on the page.
echo $output[5];

would also be an option...

 

agraham

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• Oct 9, 2009

• #7

Erel said:

You can create a small batch file with the command:
ping 192.x.x.x > 1.txt Then run the batch file with Shell. The output will be saved to 1.txt.

Click to expand...

If you use the Process object from the Threading library you can wait until the command finishes which makes things easier. P is a Process object. Note that all the filenames are explicitly prefixed by AppPath to make sure that files are where you expect them. I had trouble if I left them out - you may or may not experience the same.

B4X:

   P.New1
   FileOpen(f, AppPath & "\doit.bat", cWrite,, cASCII)
   cmd = "ping 127.0.0.1 > " & AppPath & "\ping.txt"
   FileWrite(f,cmd )
   FileClose(f)
   P.Start(AppPath & "\doit.bat", "")
   P.WaitForExit(-1)
   FileOpen(f, AppPath & "\ping.txt", cRead)
   t = FileReadToEnd(f)
   FileClose(f)
   Msgbox(t)

 

Erel

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• Oct 9, 2009

• #8

Two small comments:
- The file should be opened in ASCII mode as in agraham's example.
- It is better to wrap the path with quotes in case you have spaces in it:

B4X:

cmd = "ping 127.0.0.1 > " & chr(34) & AppPath & "\ping.txt" & chr(34)

 

agraham

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• Oct 9, 2009

• #9

Erel said:

It is better to wrap the path with quotes in case you have spaces in it:

Click to expand...

Good point Erel! I'm old-fashioned and don't put spaces in my file and folder names - somehow it just doesn't seem right to do that. I've never really got over the demise of 8.3 filenames .