Upgrading UDPXY to latest Forum » Discussions / Request for features » Upgrading UDPXY to latest Started by: mezi (guest) Date: 03 Oct 2013 14:07 Number of posts: 1 RSS: New posts.
Cd /home/osmc/udpxy/udpxy. Sudo apt-get -y install build-essential. Sudo make install. Add permissions to run the start-up script; sudo apt-get -y install dvb-apps. Sudo chmod 777 run.sh. Next we have to Edit /etc/rc.local with nano to enable to run the program at startup; sudo nano /etc/rc.local. Ubuntu has always been free to download, use and share. We believe in the power of open source software; Ubuntu could not exist without its worldwide community of voluntary developers. With a built-in firewall and virus protection software, Ubuntu is one of the most secure operating systems around. And the long-term support releases. Read the README that is provided in the UDPXY source files. It explains that you need to compile the software by running make. So, you can do just that with spksrc: create a cross-package for udpxy, set CONFIGURETARGET and COMPILETARGET to nop, and run make arch-whatever. The framework takes care of most of the details for cross-compiling.
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Getting Started
Once you've downloaded and unpacked upstart, youwill need to configure the source tree, build and install it. The mainquestion here is deciding whether or not you want to take the plunge andreplace sysvinit immediately, or whether you want to test first.
The brave will want to configure the source such that the executable partsare placed on the root filesystem and the data parts (man pages, etc.) arein the usual places.
Everyone else will prefer to install it under an alternate prefix like/opt/upstart. You will need to boot with an alternatekernel command-line such as init=/opt/upstart/sbin/init.
Job Definitions
Don't reboot just yet, you haven't configured anything to be started soyour machine will just sit there. You need to write some job definitionsthat instruct upstart what to do, and when.
Upstart comes with a set of default jobs which it installs into/etc/init. These are based on the sysvinitconfiguration of Debian-based systems, including running the/etc/init.d/rc script.
This is recommended, as it allows you to boot your machine normally, as wellas support existing applications, while you convert things to using upstartjobs.
The defaults will probably need modification to work in your distribution,as paths and maybe even arguments will need to be changed to match. Yourexisting /etc/inittab should be a useful guide.
Once happy, place the files in /etc/init and now you'reready to reboot and use upstart.
Writing Jobs
Once you're up and running, you'll want to start writing your own jobs.Note that the job file format is not stable yet, so if you upgrade upstartlater, you may need to fix existing files.
Jobs are defined in files placed in /etc/init, the name ofthe job is the filename under this directory without the .confextension. They are plain text files and should not be executable.
The format treats one or more space or tabs as whitespace, which is skippedunless placed in single or double quotes. Line breaks are permitted withinquotes, or if preceeded by a backslash. Comments begin with a‘#’ and continue until the end of the line.
exec and script
All job files must have either an exec or scriptstanza. This specifies what will be run for the job.
exec gives the path to a binary on the filesystem and optionalarguments to pass to it; any special characters (e.g. quotes or‘$’) will result in the command being passed toa shell for interpretation instead.
script instead gives shell script code that will be executedusing /bin/sh. The -e shell option is used, soany command that fails will terminate the script. The stanza is terminatedby a line containing just “end script”.
pre-start script and post-stop script
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Additional shell code can be given to be run before or afterthe binary or script specified with exec or script.These are not expected to start the process, in fact, theycan't. They are intended for preparing the environment and cleaning upafterwards.
pre-start script specifies the shell code to be run before themain process, as with script any command that fails willterminate the script and it is terminated with“end script”
post-stop script specifies the shell code to be run after themain process terminates or is killed, as with script andpost-start script any command that fails will terminate the scriptand it is terminated with “end script”
start on and stop on
Your job is now able to be started and stopped manually by a systemadministrator, however you also probably want it to be started and stoppedautomatically when events are emitted.
The primary event emitted by upstart is startup which iswhen the machine is first started (without writable filesystems or networking).
If you're using the example jobs, you will also haverunlevel X events, where X isone of 0–6 or S. Jobs willbe run alongside the init scripts for that runlevel.
Finally other jobs generate events as they are run; you can have yours runwhen another job stops by using stopped job. Theother useful job event is started job.
You list the events you want to start your job with start on,and the events that stop your job with stop on.
console
You can change the settings for where a job's output goes, and whereits input comes from, with the console stanza. This shouldbe one of output (input and output from /dev/console),owner (as output with the addition that certain signals (such as Control-C) are also sent to the process)or none (the default; input and output to /dev/null).
Job Control
start and stop
Jobs may be started and stopped manually by using the startand stop commands, usually installed into /sbin.Each takes a job name, and outputs the final status (see below).
status
The status of any job may be queried by using the status command,again usually installed into /sbin. It takes a job nameand outputs the current status.
The output can be read as follows; the job name is followed bywhether the job was last started (start) or last stopped(stop); the next word is the current state of the job andfinally the process id (if any) is given.
initctl list
A list of all jobs and their states can be obtained by usinginitctl list.
initctl emit
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A custom event may be emitted by using initctl emit, anyjobs started or stopped by this event will be affected. Assuming thefollowing job:
The following will run it:
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Events can taken arguments (passed on the emit command-line)in the form of environment variables.