I'm running a process in a screen (on Ubuntu 13.10, if it matters). I can execute a command within that screen with:
screen -p 0 -X eval 'stuff \"$command\"\015'
I'm not 100% sure what this command is doing to begin with, though it's functioning correctly. The reason behind it is I'm running a Minecraft server (still) and this screens in to the correct screen, and throws the command on the running command line. So that's good, so far.
But what I'd like is to be able to run this command with a return value. So for example, if I were to run a "list" command, it'd tell me how many people and who is online, but I need to capture that output and put it somewhere.
Anyone know of a way to accomplish this? I can't tell the minecraft server command line to redirect the output somewhere else since it doesn't have direct command line access, so the only way I could do this would be to grab all output of the screen while I'm connected ... but I'm not sure if that's possible.
I think you may be able to view the logs? can you not view a running log of the server ?
Related
I am looking to write a script that will send an ssh command over. However, there will be sub commands after a command is entered. I was hoping to do this in a single line.
Example: ssh command
>showstuff
response:>what stuff would you like to show?(1,2,3,4):
>1
response:>would you like to show more info on that stuff?(y,n):
>y
response:>here you go
Is there something to do this in a single line? ie showstuff->1->y
Or is there another easy enough way to handle this?
I found a great library for connecting with SSH. Here's an example of what I used:
Chilkat Example
Link for the library is at the top of the example. I used the ChannelSendString then the ChannelReceiveUntilMatch to wait for the response. Then I sent another command via the ChannelSendString command. Worked like a charm!
I've used this library for a bunch of solutions now.
When using the Shipit automation engine I found that trying to execute commands with "sudo" from an user other than root (let's call it "devuser") results in the connection closing without the command being executed.
This is a command that I'm trying to execute:
shipit.remote('sudo pwd');
Note that, on the target machine, "devuser" can execute everything with "sudo", without being asked his/her password (it's a choice of the target system).
Also note that everything invoked without "sudo" (and that obviously doesn't need elevated permission) gets executed prefectly fine by Shipit.
E.g.this one works just fine:
shipit.remote('pwd');
The question at this point is: am I doing something wrong or is it this way by design (e.g. to avoid privileges escalation)?
If it's the latter: is there a way to work this limitation around?
simple hack for that is to set user inside each command that you are running with shipit. This is little overhead especially if there are a lot of commands but it will do the trick. Command for that is :
su - <user> -c "<command>"
In your case :
shipit.remote('su - devuser -c "pwd"');
You were on right track with your example.
Best regards,
Nikola
On development everything works great. On production however, this line of code in a controller is no working:
output = `mclines #{paramFileName} #{logFileName} #{outputFileName}`
where mclines is a c program, and the rest are names of files. mclines is not executed on the production server, but it does on my laptop. I have no idea about what to fix. Have been trying different things for hours, but the truth is that I'm quite lost. In production the ssl in on, that's the only major difference.
If I execute the command on the shell, it gets executed. When I say it doesn't gets executed is because the first thing it should do is print some info in a file, and it doesn't. The server -as my laptop- is running ubuntu, but I have no idea about what logs could be usefull to read. systemlog had nothing usefull.
Any ideas that can lead to find the culprit are welcome.
Make sure mclines really exists on the production server, and use the full path to the mclines executable, as in
output = `/full/path/to/mclines #{paramFileName} #{logFileName} #{outputFileName}`.
Reference this
Try to print out your exit status code as:
$?.to_i
after the command...
or as pointed out in this link you can always use popen3/popen4 for better handling of input/output for system commands...
So I'm looking here and I see the command line switches. http://mono-project.com/Command_Line_MoMA
This is what I see as the total amount of switches from the site:
MoMA.exe --nogui --out C:\app\momareport\report.html C:\app\myapp.exe
One thing I see is the submit.xml going to a place I don't want during my automated build. Since it is a generated file, I want to change where it goes. Is there a switch for that?
Also, what are all of the switches for it?
If there is not a switch for moving the submit.xml to a reporting location, please consider it for future versions.
EDIT: The argument --help does not work. I tried that and a host of others to try to get some dialog from MoMA on the command line. I'm on Windows to help alleviate any confusion.
Those are the only command line switches supported by MoMA. You can see the code here.
"MoMA.exe --help" does not work because MoMA is compiled as a winforms application so that the command window is not shown. As a result, MoMA disconnects from the command window, and therefore things like Console.WriteLine will not work.
To answer your actual question, there is currently not a way to change where the .xml file gets put.
You might want to try:
MoMA.exe --help
On Linux, there should also be a manpage.
If you can't find the feature, and want to submit it to Mono, you'll want to go via the Bugzilla page.
I have a .bat file shown below in which I want to redirect the whole contents present in my IDE to some text file.
D:\WindRiver\wrenv.exe -p vxworks653-2.2.3 run
D:\WindRiver\wrenv.exe -p vxworks653-2.2.3>C:\ThreePartition\output.txt
PAUSE
I am able to just get some partial output i.e I am unable to get the errors which are thrown during compilation or building process.
Is this correct or Can anyone suggest any other way??
Thanks a lot
Maddy
You can try this:
D:\WindRiver\wrenv.exe -p vxworks653-2.2.3 > C:\ThreePartition\output.txt 2>&1
You can find a good explanation here. Basically you need to redirect both stdout AND stderr to your file.
Best regards.
Your batch is redirecting all messages from wrenv.exe that are sent to the standard output.
I never used WinRiver but usually IDEs manage the console internally and don't log any messages on the standard output/error stream.
It is maybe possible to set the output of the console of the IDE though. If it is, try to set it to the standard output.
I think you want to combine both those lines into one:
D:\WindRiver\wrenv.exe -p vxworks653-2.2.3 run >C:\ThreePartition\output.txt
OK, looking at your posts here, here and here, it seems you want to log the compilation process. The command for that will be something like (all on one line):
make ThreePartition.mak >C:\ThreePartition\output.txt
Assuming there's a file called ThreePartition.mak.
The command you've been using so far is designed to simply open an interface where you can type commands, which is why you get no output. If you want to log simulation, or a kernel build, there is a file called vxworks_cli_tools_users_guide_6.6.pdf which describes the command line interface, including vxprj in full detail.
Also, are you really using a nant script to call a .vbs to call a .bat to call wrenv.exe? I'm sure there's a simpler way to do that.