Okay here's my problem.
I type in "rails s" and then my terminal won't let me type in any commands. So I have to start a new terminal window, which is pretty annoying.
On the other hand I can type in "rails s -d" which detaches, and then it's a pain to stop the server when I need to. (Instead of using control+c, I have to find the PID and use kill -9 PID)
I'm not a professional, so if anyone has any advice it would be much appreciated, thank you!
I don't believe there is a way to do the thing you are specifically asking for.
However, I use Iterm2 which allows me to open multiple terminal windows in one window, either by splitting my iTerm2 window or by creating multiple tabs. That way I can just make the terminals that are holding rails server and my development.log tail very small unless something interesting happens in them.
I use screen, you can also use TMUX but they are window managers in terminal and you can create multiple windows in same terminal window :)
Read up on them at WikiVS as that might help you :)
http://www.wikivs.com/wiki/Screen_vs_tmux
Screen: http://www.gnu.org/software/screen/
TMUX: http://tmux.sourceforge.net/
So you can easily switch and maintain same terminal window. You can't obviously use the EXACT same window that rails server running but it's close enough without having to do the searching for the PID.
You can type: rails s &. I'm not sure if this is what you meant.
Related
When I run \dt (and other commands of psql like \l) this thing appears. What is this? Is this an editor?
Most importantly, when I click Ctrl+Z, I get thrown out of psql completely. How do I exit it without exiting psql?
I am totally new to Ubuntu, so sorry if its a dumb question. Thanks for your time on advance!
You seem to come from Windows.
The pager that gets invoked whenever a query result does not fit on your screen is something similar to Windows' more, so you exit it by typing q.
If you don't want a pager at all, set the environment variable PAGER to an empty string:
PAGER='' psql
Typing Ctrl+Z will not send an End-of-file on Linux, it will suspend the current foreground process, which continues to lurk in the background. You can rescue it from there with the command fg.
I am an absolute beginner with Ruby on Rails and I seem to have a problem with the way I should be doing things.
If I use "rails server" in order to be able to test my application, I can't do anything else in the command line.
Is there another way of doing scaffolding, other than command line? If not, how to I get two "Command prompts with Ruby" at the same time?
When you search for it from your metro screen, right click on it and then click on Open in a new window.
Open a new terminal tab before you start your Rails server, and then you can just leave it running in the background. However, do make sure you go back to that tab and specifically shut the server down before closing terminal as it doesn't always automatically shut down when terminal is closed and then you may have problems when reopening later.
Is it possible to force stop a .wlua file? I figured that I would have to use the Lua Command Line to do this, but I can't seem to find out how to stop them.
If it's possible, how can it be done?
Because wlua.exe doesn't open the console window (that's the purpose) and you can't send Ctrl-C, the only way to terminate such application is to use Processes window in Task Manager. Note, however, that the process name will be wlua.exe for every file opened that way.
Of course, it's meant only to be used when the application isn't responding. Your GUI application should provide a way to close it, such as close button, listening for ESC key etc.
I have a Windows 7 laptop, and I think I installed everything correctly, and I am trying to follow a couple tutorials to learn from. I can make a new application ok, and I can start the server just fine by typing "rails server", and I can go to the localhost:3000 'welcome aboard' page just fine, but after that the tutorials ask me to type other stuff into the command prompt window. The problem is, with the server running, I can't type anything into the command prompt window! I'm obviously doing something wrong.. anyone have any idea of what I should be doing?
The easiest way is to open another command window.
I set up students to use more than one command window like this:
one for typing most commands
one for running the server
one for printing the log file using the "tail -f" command to show ongoing progress
one for running rails console
I'm on mac osx using zsh. If I start a rails server with "rails s" I can put it in the background by hitting "ctrl-z" in my terminal (zsh).
If I open up a different terminal window then I don't see the rails server if I do "jobs". However, I can see it when I do "ps".
Is there a way I can somehow "unpause" the rails server in this new terminal window?
You can not easily move a process to a new tty. The easiest solution would be to start it in a screen session, detach screen and then resume in the new terminal.
The job is "stopped" by sending it a SIGSTOP.Your C-z doesn't send the job into the background. It "stops" it. You can then move it into the background using the bg shell builtin. However, if you send this process a SIGCONT (kill -CONT <pid>), it should bring the process back to the foreground. This can be done from a different shell.
You will not see it if you type jobs because it is a job controlled by a different shell (the other terminal window and not the one where you typed jobs). Processes however are "global" and can be seen from anywhere using the ps command (as you rightly pointed out).
Update: Looks like I spoke too soon. Apparently, the signal alone isn't enough to bring it back to the foreground. Probably something to do with the shell.