Just backgrounding your script (./myscript &) will not daemonize it. See http://www.faqs.org/faqs/unix-faq/programmer/faq/, section 1.7, which describes what’s necessary to become a daemon. You must disconnect it from the terminal so that SIGHUP does not kill it. You can take a shortcut to make a script appear to act like a daemon; nohup ./myscript 0<&- &>/dev/null … Read more
You can daemonize any executable in Unix by using nohup and the & operator: nohup yourScript.sh script args& The nohup command allows you to shut down your shell session without it killing your script, while the & places your script in the background so you get a shell prompt to continue your session. The only … Read more
The Solution Worked: 1.Open the projects gradle.properties file in android studio 2.Added this line at end of file org.gradle.jvmargs=-Xmx1024m & Save the file 3.Close & reopen the project or just Clean and re-Build it
A technique that is handy on a Linux system is using domain sockets: import socket import sys import time def get_lock(process_name): # Without holding a reference to our socket somewhere it gets garbage # collected when the function exits get_lock._lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) try: # The null byte (\0) means the socket is created # … Read more
The output of ps aux looks like you did not start docker through systemd/systemctl. It looks like you started it with: sudo dockerd -H gridsim1103:2376 When you try to stop it with systemctl, nothing should happen as the resulting dockerd process is not controlled by systemd. So the behavior you see is expected. The correct … Read more
In Linux i want to add a daemon that cannot be stopped and which monitors filesystem changes. If any changes would be detected it should write the path to the console where it was started + a newline. Daemons work in the background and (usually…) don’t belong to a TTY that’s why you can’t use … Read more
You can use pgrep as long as you include the -f options. That makes pgrep match keywords in the whole command (including arguments) instead of just the process name. pgrep -f keyword From the man page: -f The pattern is normally only matched against the process name. When -f is set, the … Read more
You could start your php script from the command line (i.e. bash) by using nohup php myscript.php & the & puts your process in the background. Edit: Yes, there are some drawbacks, but not possible to control? That’s just wrong. A simple kill processid will stop it. And it’s still the best and simplest solution.
2016 answer: nearly every Linux distribution comes with systemd, which means forever, monit, PM2, etc. are no longer necessary – your OS already handles these tasks. Make a myapp.service file (replacing ‘myapp’ with your app’s name, obviously): [Unit] Description=My app [Service] ExecStart=/var/www/myapp/app.js Restart=always User=nobody # Note Debian/Ubuntu uses ‘nogroup’, RHEL/Fedora uses ‘nobody’ Group=nogroup Environment=PATH=/usr/bin:/usr/local/bin Environment=NODE_ENV=production … Read more
I was trying to understand the double fork and stumbled upon this question here. After a lot of research this is what I figured out. Hopefully it will help clarify things better for anyone who has the same question. In Unix every process belongs to a group which in turn belongs to a session. Here … Read more