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I was trying to run a command with at, but with no success…
I guess that at is primary designed to run shell scripts…. BUT if want to run system command?

echo "ls -la" | at now + 1 minutes

It will run the ls -la from now plus one minute 🙂

f*ck!

i’v been struggling with avconv, exec, chown and all that sh*ts this last two days!
’cause i was trying to preform a  exec to avconv to create some screencaps and the command was  in two lines…

echo $avconScreenScroll = 'avconv -i '.$destFolder.'/' . $dataVideos['videos'][$key]['videoFilename'] . '
 -vsync 1 -s 150x100 -qscale 1 -r 1 -an -y ' . $screencapsDir . '/scroll/img%03d.jpg';
 exec($avconScreenScroll);

exec() executes an external program

shell_exec() executes a command via shell and returns the output as a string

To limit CPU usage of the process called avconv to 70%, enter:

cpulimit -e avconv -l 30

To limit CPU usage of the process to 70% by using its PID, enter:

cpulimit -p 6969 -l 70

If the process isn’t running cpulimit will wait for it.

Process using 100% of the CPU

3028 pjrfiguei 20 0 131M 13948 4404 R 100. 1.4 0:27.49 avconv -i video.wmv -vsync 1 -s 300x200 -qscale 1 -r 2 -an -y img%05d.jpg -benchmark

Process using 30% of the CPU

3028 pjrfiguei 20 0 131M 13948 4404 T 30.0 1.4 2:24.25 avconv -i video.wmv -vsync 1 -s 300x200 -qscale 1 -r 2 -an -y img%05d.jpg -benchmark

 

Nginx

Nginx  develops and maintains NGINX open source distribution, and offers commercial subscriptions and professional services for NGINX. NGINX supports more than 95 mln of web-sites ll over the world.NGINX project started in 2002 and grew dynamically over the past 10 years thanks to the vision of Igor Sysoev, and the enthusiasm and support of its loyal community of users and developers. It is now the second most popular open source web server worldwide, according to the latest Netcraft survey.

NGINX is used by over 20% of the top 100,000 busiest sites, including Netflix, Facebook, Zappos, Groupon, LivingSocial, Hulu, TechCrunch, Dropbox and WordPress, as well as by almost 13% of the entire Internet web sites population

Quick Facts:

• Project started in 2002, company since 2011
• Run by 15% of Internet domains, 95 million sites
• Run by 20% of world’s 10.000 most busiest sites
  
  http://runacap.com/companies/portfolio/nginx/

To find out PID of the process use any of the following

ps aux | less
ps aux | grep nginx
pgrep -u user php-fpm
pgrep avconv