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I have a Laravel project deployed on Ubuntu VM. I have a script that I am working on right now that to know if the current VM deployed using nginx or Apache programmatically.
I know I can just check using these ps and grep command I will find that out
root@theawsbiz:~# ps -aux | grep apache
root 3446 0.0 1.8 544540 37144 ? Ss 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3449 0.1 1.9 550388 39796 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3454 0.0 1.0 547336 21532 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3457 0.0 1.8 548196 37864 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3458 0.0 1.0 547320 21428 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3462 0.0 1.7 550008 36264 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3465 0.0 1.8 550408 38160 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3466 0.0 1.9 550400 40512 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3467 0.0 1.0 547320 21416 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3468 0.0 1.7 548228 36236 ? S 17:02 0:00 /usr/sbin/apache2 -k start
www-data 3520 0.0 0.9 546872 19964 ? S 17:06 0:00 /usr/sbin/apache2 -k start
root 3526 0.0 0.0 14856 1036 pts/1 S+ 17:06 0:00 grep --color=auto apache
root@theawsbiz:~# ps -aux | grep nginx
root 3529 0.0 0.0 14856 1092 pts/1 S+ 17:06 0:00 grep --color=auto nginx
root@theawsbiz:~#
With those result about, I know that this VM is using Apache.
But, I have no idea how to check it via a Bash script. How would one go about and do that? I'm open to any suggestions at this moment.
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How to Check If You're Running Nginx or Apache. On most websites, you can simply check the server HTTP header to see if it says Nginx or Apache. You can see HTTP headers by launching the network tab in Chrome Devtools. Or you can check headers in a tool like Pingdom or GTmetrix.
#1 Checking the Apache Version Using WebHost ManagerFind the Server Status section and click Apache Status. You can start typing “apache” in the search menu to quickly narrow your selection. The current version of Apache appears next to the server version on the Apache status page. In this case, it is version 2.4.
If your webserver runs on standard port see "netstat -tulpen |grep 80". It should tell you which service is running. Now you can check the configs, you'll find them normally in /etc/servicename, for example: apache configs are likely to find in /etc/apache2/. There you'll get hints where the files are located.
Through a simple command you can verify the status of the Nginx configuration file: $ sudo systemctl config nginx The output will show if the configuration file is correct or, if it is not, it will show the file and the line where the problem is.
Since you are trying to achieve this with grep and ps, you could do something like this:
if [[ `ps -acx|grep apache|wc -l` > 0 ]]; then
echo "VM Configured with Apache"
fi
if [[ `ps -acx|grep nginx|wc -l` > 0 ]]; then
echo "VM Configured with Nginx"
fi
ss command can tell you what process is listening on a port.
For example ss -tlnp | grep -E ":80\b" tells you what process is listening on tcp port 80. You can see it's apache or nginx.
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