Here is the situation, I'm planning to use a simple script to start a program call "STAF", when the Suse system is fully booted. I have achieved this by putting it in the "/etc/init.d/", but this script is basically executed at the background, which means that I cannot see its progress.
When the "STAF" is started this way it works but it doesn't show any working progress when its running service (for example ping, or system backup), instead if I start the "STAF" manually by running the same script whit a terminal, the working progress of "STAF" can be seen on the terminal. Its sort of like the program needs to be started with a interactive terminal, but how can I make this starting process automatic and it should imitate human opening a terminal and run the script?
Sorry if I explained it poorly because its a confusing situation. Thanks.
First, go to the KDE Startup and Shutdown options under System Settings. Then add this command as a new startup script:
konsole -e bash nameofyourscript.sh
I believe the screen utility can do what you describe. Instead of running STAF on startup, you would run screen STAF. To open that terminal, you would run screen -ls to get the screen ID, and screen -r ... to open it.
(Disclaimer: I have not tried this.)
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I try to execute a java application at startup in a yocto based linux device. I added a script at /etc/init.d/etic and made it executable. If I call at the shell /etc/init.d/etic start or /etc/init.d/etic stop the application is started an stopped as expected. Then I called on the shell update-rc.d etic defaults and the symlinks were created. According to what I found on the web, this should be enough, but somehow the application is not started. What did I miss? How could I check what is going wrong or is there any minimal example which should work which I can try to extend?
Well, often such issues are due to a different environment when executing the start script by hand, as compared to when it's being run from the init system. For instance, your .profile and .bashrc won't have been sourced, when running from the init system.
You can use eg logger to easily log things from your init-script, and this rather easily find out what goes wrong.
I have written up a simple bash script that will copy the newest image from my ip camera into a directory, rename the file and delete the old file. The script loops every 10 seconds.
I want to have this script start running in the background and run continuously all the time that the server is up.
I understand the part about adding a & to the end of the command will cause it to run in the background.
Is init.d the best place to execute this?
I am running ubuntu server.
This sort of thing is normally done by service scripts, which you would find under /etc/init.d. Depending on the version, that might be a "System V init script", or one of the systemd scripts.
A simple service script of the sort you are asking about would start automatically (based on comments in the script's header that tell what run-levels it would use), create a file under /var/run telling what process-id the script uses (to allow killing it), and run the copying in a loop, calling sleep 10 to space the timing as indicated.
A typical service script should implement "start", "stop", "restart" and "status". Not all do, but there is rarely a good reason to not do this.
On my (Debian) system, there is a README file in the directory which is a good introduction to the topic. There are several tutorials available for the topic. Here are a few:
Linux: How to write a System V init script to start, stop, and restart my own application or service
Writing a Linux Startup Script
Manage System Startup and Boot Processes on Linux with Upstart
Is there anything similiar to Linux's "screen"? What I want to do is launch console application created in Java. Then let's say I want to execute command to the running application. For example I want to tell it to exit so I'll tell it command 'exit'. On Linux I can open the application "in screen" and later if I want to tell it any command I can attach the "screen", tell it the command and detach. I don't need screen but I need something that can do this. It would also be cool if I could do it without installing any additional software.
You can install cygwin and within cygwin install screen.
I am a beginner to linux programming. What I want to do is, run a C "Hello World" program at startup. Once the user logs in, run that C program. How can I achieve this?
I am running Ubuntu 8.04.
you can create a script inside /etc/init.d/myScriptName which inside this script you start you program
remember to give chmod +x to your script to give execution permissions
I've done that on my machine.
First, in your menu bar, click System, then Preferences, then click Sessions.
A list of startup programs will be shown. click + button and add your script.
This might differ on linux distro. But at least you got the idea.
I solved it by writing a bash script
I have a process (Spark chat client) which needs to be run when my Ubuntu boots up. For this I have done followings.
I created a run.sh file which will fire up my application (and I check it's working)
I created a symbolic link from both /etc/rc5.d/ and /etc/rc3.d/ to my run.sh file. (A symbolic link is also working fine)
But my processes don't start up when my machine boots. (Is this the way to do it or am I doing the wrong thing here?)
I'm running on Ubuntu 10.04 LTS (Lucid Lynx).
Your solution would've worked in most Linux distributions. However, Ubuntu never goes past runlevel 2.
Just in case, this means the contents of rc?.d with ? > 2 are not used unless you manually raise the runlevel as root. Use rc2.d :)
The symlinks you created in /etc/rc5.d/ and /etc/rc3.d/ should be named S##name. S is for start, and the number ## gives an order in which the scripts are run.
Note also that the symlinks in these directories usually points to the actual script located in /etc/init.d/.
It looks like you want to run an X program when a user logs in, not a service on startup. Remember, in Linux there is no GUI; X is a program that runs to display graphics on the screen.
You likely want to set up a program to start on KDE/Gnome login. Each has their own way to do it, but is generally boils down to pointing at a script and saying "Run this."
Put the command to run that script in the /etc/rc.local file. I think it will run each time you log in to the system.