# Locales configuration
The time and language settings are allways checked for several tools, thus check and reconfigure them:
```
sudo dpkg-reconfigure locales
```
# Apache Web Server
First check that the apache package is already or not isntalled in your device
```
dpkg --get-selection | grep apache
```
If the package is not isntalled, please procced to install Apache:
```
sudo apt update
sudo apt install apache2
```
## status and configuration
To print out the services running on the device and their specific ports use:
```
sudo netstat -tlpn
```
Check that the port 80 is not used, otherwise, you will receive errors during the Apache installation or initialization.
If this occurs, modify one of the next files at `/etc/apache2/`
- `apache2.conf` main configuration file for the server
- `ports.conf` configuring virtual server port numbers (80) as default
Then, restart the `apache2` service:
```
sudo service apache2
sudo service apache2 restart
service --status-all
```
# Web pages and scripts
## HTML
The index file for creating a web page is located on `/var/www/html/`.
## CGI
The *Common Gateway Interface* (CGI) uses the next path for executing CGI scripts `/usr/lib/cgi-bin/`
```
ls
Readme.md index.html test.cgi
┌─[debian][beaglebone][~/md/web-server]
└─▪ vim test.cgi
┌─[debian][beaglebone][~/md/web-server]
└─▪ sudo cp test.cgi /usr/lib/cgi-bin/test.cgi
┌─[debian][beaglebone][~/md/web-server]
└─▪ sudo chmod ugo+x /usr/lib/cgi-bin/test.cgi
┌─[debian][beaglebone][~/md/web-server]
└─▪ cd /etc/apache2/mods-enabled/
┌─[debian][beaglebone][.../apache2/mods-enabled]
└─▪ sudo ln -s ../mods-available/cgi.load
ln: failed to create symbolic link './cgi.load': File exists
┌─[debian][beaglebone][.../apache2/mods-enabled]
└─▪ ls -l cgi.load
lrwxrwxrwx 1 root root 26 Oct 3 03:29 cgi.load -> ../mods-available/cgi.load
┌─[debian][beaglebone][.../apache2/mods-enabled]
└─▪ curl localhost:8888/cgi-bin/test.cgi
BBHello
beaglebone
up for 03:35:43 up 2:51, 4 users, load average: 0.00, 0.00, 0.00
┌─[debian][beaglebone][.../apache2/mods-enabled]
```