I workin' with Torch7 and Lua programming languages. I need a command that redirects the output of my console to a file, instead of printing it into my shell.
For example, in Linux, when you type:
$ ls > dir.txt
The system will print the output of the command "ls" to the file dir.txt, instead of printing it to the default output console.
I need a similar command for Lua. Does anyone know it?
[EDIT] An user suggests to me that this operation is called piping. So, the question should be: "How to make piping in Lua?"
[EDIT2] I would use this # command to do:
$ torch 'my_program' # printed_output.txt
Have a look here -> http://www.lua.org/pil/21.1.html
io.write seems to be what you are looking for.
Lua has no default function to create a file from the console output.
If your applications logs its output -which you're probably trying to do-, it will only be possible to do this by modifying the Lua C++ source code.
If your internal system has access to the output of the console, you could do something similar to this (and set it on a timer, so it runs every 25ms or so):
dumpoutput = function()
local file = io.write([path to file dump here], "w+")
for i, line in ipairs ([console output function]) do
file:write("\n"..line);
end
end
Note that the console output function has to store the output of the console in a table.
To clear the console at the end, just do os.execute( "cls" ).
Related
I have a console app (Visual Studio - VB), it runs, it does it's job.
I also have a batch file that runs the program and everything, but I want the output of my console app to also send to a text file.
This is my current batch, which creates the text file, but nothing is in it.
Start "" "C:\Users\wrossi\Desktop\NetLogOnSysInfo Solution\NetLogOnSysInfo Project\bin\Debug\NetLogOnSysInfo Project.exe" -all >>%ComputerName%.txt
Exit
Not sure if the batch is wrong, or if I should look at my program. Also, how do I define a path so I can put the output file exactly where I want it?
"C:\Users\wrossi\Desktop\
NetLogOnSysInfo Solution\NetLogOnSysInfo Project\bin\Debug\NetLogOnSysInfo Project.exe"
-all > %ComputerName%.txt
No need to use Start.
You are pretty close to what I think you want to do:
c:\console.exe > c:\output.exe
c:\console.exe or wherever the location of your console app > redirect stdout (use >> to append) c:\output.txt or wherever you want to create the text file.
Hope this helped.
Also just in case:
type stdin.txt | console.exe > stdout.txt
In the above example you can redirect an input from stdin.txt and pipe it into console.exe then redirect the output of console.exe to stdout.txt
I found one code recently after searching alot
if u wanna run .bat file in vb or c# or simply
just add this in the same manner in which i have written
here is the code
code > C:\Users\Lenovo\Desktop\output.txt
just replace word "code" with your .bat file code or command and after that the directory of output file
I've written an octave script, hello.m, which calls subfunc.m, and which takes a single input file, a command line argument, data.txt, which it loads with load(argv(){1}).
If I put all three files in the same directory, and call it like
./hello.m data.txt
then all is well.
But if I've got another data.txt in another directory, and I want to run my script on it, and I call
../helloscript/hello.m data.txt
this fails because hello.m can't find subfunc.m.
If I call
octave --path "../helloscript" ../helloscript/hello.m data.txt
then that seems to work fine.
The problem is that if I don't have a data.txt in the directory, then the script will pick up any data.txt that is lying around in ../helloscript.
This seems a bit fragile. Is there any way to tell octave, preferably in the script itself, to get subfunctions from the same directory as the script, but to get everything else relative to the current directory.
The best robust solution I can think of at the moment is to inline the subfunction in the script, which is a bit nasty.
Is there a good way to do this, or is it just a thorny problem that will cause occasional hard to find problems and can't be avoided?
Is this in fact just a general problem with scripting languages that I've just never noticed before? How does e.g. python deal with it?
It seems like there should be some sort of library-load-path that can be set without altering the data-load-path.
Adding all your subfunctions to your program file is not nasty at all. Why would you think so? It is perfectly normal to have function definitions in your script. The only language I know that does not do this is Matlab but that's just braindead.
The other alternative you have is to check that the input file argument, data.txt exists. Like so:
fpath = argv (){1};
[info, err, msg] = stat (fpath);
if (err)
error ("could not stat `%s' : %s", fpath, msg);
endif
## continue your script knowing the file exists
But really, I would recommend you to use both. Add your subfunctions in your main program, the only reason to have it on separate file is if you plan on sharing with other programs, and always check input arguments.
I am trying a bit of experiments with airmon-ng script in Linux. Meanwhile i want to redirect output of a process "airodump-ng mon0" to a file. I can see the instantaneous output on the screen. The feature of this process is that it won't stop execution(actually it is a script to scan for AP and clients, it will keep on scanning) unless we use ctrl+c.
Whenever i try
airodump-ng mon0 > file.txt
i won't get the output in the file.
My primary assumption is that the shell will write it to the file only after completing the execution. But in the above case i stopped the execution(as the execution won't complete).
So to generalize i can't pipe the output of a running process to a file. How can i do that?
Or is there any alternative way to stop the execution of the process(for example after 5 seconds) and redirect the current output to a file?
A process may send output to standard output or standard error to get it to the terminal. Generally, the former is for information and the latter for errors, but in some cases, a process may mix them up.
I'm supposing that in your case, the standard error is being used. To get both of these to the output file, you can use:
airmon-ng mon0 > file.txt 2>&1
This says to send standard output to file.txt and to reroute 2 (which is the file id for standard error) into 1 (the file id for standard output) so that it also goes to the file.
I have a script which interacts with user (prints some questions to stderr and gets input from stdin) and then prints some data to stdin. I want to put the output of the script to a variable in vimscript. It probably should look like this:
let a = system("./script")
The supposed behavior is that script runs, interacts with user, and after all a is assigned with its output to stdout. But instead a is assigned both with outputs to stdout and stderr, so user seed no prompts.
Could you help me fixing it?
Interactive commands are best avoided from within Vim; especially with GVIM (on Windows), a new console window pops up; you may not have a fully functional terminal, ...
Better query any needed arguments in Vimscript itself (with input(); or pass them on from a custom Vim :command), and just use the external script non-interactively, feeding it everything it needs.
What gets captured by system() (as well as :!) is controlled by the 'shellredir' option. Its usual value, >%s 2>&1 captures stdout as well as stderr. Your script needs to choose one (e.g. stdout) for its output, and the other for user interaction, and the Vimscript wrapper that invokes it must (temporarily) change the option.
:let save_shellredir = &shellredir
:set shellredir=>
:let a = system('./script') " The script should interact via stderr.
:let &shellredir = save_shellredir
Call the script within the other as,
. ./script.sh
I think this is what you meant.
I am currently looking at using Scala scripts to control the life-cycle of a MySQL database instead of using MS-DOS scripts (I am on Windows XP).
I want to have a configuration script which only holds configuration information, and 1 or more management scripts which use the configuration information to perform various operations such as start, stop, show status, etc .....
Is it possible to write a Scala script which includes/imports/references another Scala script?
I had a look at the -i option of the scala interpreter, but this launches an interactive session which is not what I want.
According to Scala man, script pre-loading only works for interactive mode.
As a workaround, you can exit the interactive mode after running the script. Here's the code of child.bat (script that includes another generic one):
::#!
#echo off
call scala -i genetic.bat %0
goto :eof
::!#
def childFunc="child"
println(geneticFunc)
println(childFunc)
exit;
genericFunc is defined at genetic.bat
The output of child.bat:
>child.bat
Loading genetic.bat...
...
geneticFunc: java.lang.String
Loading child.bat...
...
childFunc: java.lang.String
generic
child
I'd use Process and call the other Scala script just like any other command.
One option would be to have a script which concatenates two files together and then launches it, something like:
#echo off
type config.scala > temp.scala
type code.scala >> temp.scala
scala temp.scala
del temp.scala
or similar. Then you keep the two seperate as you wished.