xml" this will give path to config. This is the only way to activate the new settings. That is, if you change the configuration file while the MongoDB instance is running, you must restart the instance for the changes to take effect. As things stand on Ubuntu, you have to manually use certutil to add your CAs for each application, for each user. The http integration serves all files and data required for the Home Assistant frontend. Actually the execution starts with /etc/profile file and all other bash_profile configuration files are configured in the /etc/profile file in the given sequence. In this example, we will search for 'PULSEAUDIO_SYSTEM_START‘ in all configuration files located in /etc directory. For a list of available configuration options, see npm help 7 config. Download free software for the Raspberry Pi, including NOOBS, Raspbian, and third-party operating system images. I still have no idea how to handle the requests to link Ubuntu bugs to the Ubuntu BTS and Debian bugs to the Debian BTS. If this is successful, my local HASS instance will automagically pull down the new configuration and restart itself. sudo add-apt-repository ppa:webupd8team/java. OpenVPN server…. We also need to create some new rules and enable syslog server. Fast Servers in 94 Countries. To enable SELinux, Open the /etc/selinux/config file and set SELINUX=enforcing: SELINUX=enforcing. Hide Your IP Address. conf as usual; the. They have an excellent guide for setting up the controller on Amazon AWS using the free tier that gives a free. Hi, today I am sharing how to install ubiquiti unifi controller on an Ubuntu Server VM, for that you will need the following A Ubuntu Server VM with ssh enabled (in case you access via putty or any other ssh clients). 10 Live CD very frequently. so is there any other possible location for finding this file? - dgoku Dec 13 '15 at 9:05. Setting up Ubiquiti Unifi on DigitalOcean Overview. network, a "drop-in" directory foo. 04 Install Synaptic Package Manager In Ubuntu 18. How to Install and Configure OpenVPN Server on Ubuntu 16. Modifying the apache config file Ubuntu Linux Instructions. js is an automatically updated file apparently based on about:config settings and is at least partially overwritten by Thunderbird regularly. If you are converting an existing Ubuntu non-server edition system to a 24/7 home server or repurposing old PC as a server, you will have to manually install OpenSSH Server and SAMBA server. Installing Unifi on Ubuntu Server 16. The location of the main file and configuration directories may be changed through use of the --config, --config-dir, --system-config-dir, and --intern-config argument for NetworkManager, respectively. Click on restore from previous backup and load the. In addition to the mapping the ports, I also mount a directory from the synology onto /var/lib/unifi in the container so that all of this configuration and state is stored externally. OpenVPN server…. The apache configuration file on ubuntu/debian is located at the following path. Enabling logging on iptables is helpful for monitoring traffic coming to our server. For the first change, it is actually an optional change. To create a file with this command, first change into the directory that contains your website files. If your application has to serve static files, the following rule should be added to the demoapp_nginx. This topic will guide you on how you can install Ubuntu 16. Network security is become Private Internet Access Ubuntu Config Files more of an issue as people become increasingly aware of how much they are watched online. x and earlier releases), it has two separate config files: config/db. sudo bash -c 'cat >> /etc/logrotate. 10 for a two-fold purpose - 1. This is where I store some of the files common to several containers. OpenSSH Config File Examples last updated May 15, 2018 in Categories BASH Shell , CentOS , Debian / Ubuntu , FreeBSD , Linux , OpenBSD , RedHat and Friends , Suse , UNIX H ow do I create and setup an OpenSSH config file to create shortcuts for servers I frequently access under Linux or Unix desktop operating systems?. ini file you want to edit. Most documentation on the web does not mention this. This post is geared toward Ubuntu (Debian) + Apache, but should work on most systems - Just apply the permissions and update location/path in given config (apache/nginx/etc). If you are converting an existing Ubuntu non-server edition system to a 24/7 home server or repurposing old PC as a server, you will have to manually install OpenSSH Server and SAMBA server. Edit file: /etc/ssh/sshd_config be sure the following three lines are uncommented: X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes. It is always better to put the files in ~/. Types: Android VPN, iPhone VPN, Mac VPN, iPad VPN, Router VPN. The location of this file is set at compile-time, but may be overridden with the -f command line flag. This is an application which manages the contents of /etc/resolv. OPENVPN SERVER CONFIG FILE LOCATION UBUNTU for All Devices. The following three files are the important configuration files for the runtime environment settings of a Hadoop cluster. If Icecast refuses to start it is in most cases due to a malformed config file. OPENVPN CONFIG FILE LOCATION UBUNTU 100% Anonymous. OPENVPN SERVER CONFIG FILE LOCATION UBUNTU 100% Anonymous. Below is a listing of all the public mailing lists on lists. Scroll down the file to location the [mysqld_safe] section. Jackpots start at $40 million and grow from there! Players win a ubuntu openvpn config file location prize by matching one of the 1 last update 2019/09/17 9 Ways to Win. Start by upgrading to the newest version of Ubuntu ~$ sudo apt-get upgrade [press enter to keep the local config] 3. My test box IP address is 192. I'd like to get more information about my wireless settings stored under CentOS / RHEL / Fedora Linux. Does anyone know where the Gedit configuration file/s are located?I knowthat the ~/. conf) location Jun 08, 2011. It makes it much more difficult for people to mooch off of your WiFi and. conf is included by an include directive in apache2. 04), I couldn’t get the local printer setup. Apache Httpd Manual Config File Location Ubuntu Manually configure the MySQL database for Drupal, Manually configure the It is also required to create the initial configuration file for the default site. sudo install. Configuration File Status. gz # ll Sample Output total 26328 drwxr-xr-x 2 nijam nijam 4096 Sep 21 2014 bin -rwxr-xr-x 1 nijam nijam 347 Nov 7 2017 init-user-db. To find config. (THIS project IS DORMANT: Please have a look at calmh/unifi-api instead, which is cleaner) Add some extra spice to your Ubiquiti UniFi wifi network! - unifi-hackers/unifi-lab. config is a hidden folder it will not appear in your File Manager by default. These settings (such as the data directory and log directory specifications) take effect upon startup. How to tell which services run at startup on Raspberry Pi? starts with Default-Start in all files in /etc services run at startup on Raspberry Pi? (raspbian). It is responsible for loading and transferring control to the operating system Kernel. 04 Linux containers (LXC), is an open source, lightweight operating system-level virtualization software that helps us to run a multiple isolated Linux systems (containers) on a single Linux host. Here's where to find the Apache 2 web server configuration file httpd. UBUNTU VPN CONFIG FILE LOCATION for All Devices. Verify Configuration: How to Find Config File Location. ini file is an easy and most effective way to do it. Config groups. If the SSL key files are protected correctly (directory & files), you will be fine. 24/7 Customer Service. Cronos casou com a Use Cyberghost To Access Netflick Us sua irmã Reia, que Use Cyberghost To Access Netflick Us lhe deu seis filhos (os crónidas): três mulheres, Héstia, Deméter e Hera e três homens, Hades, Posídon e Zeus. Types: Android VPN, iPhone VPN, Mac VPN, iPad VPN, Router VPN. Download OpenVPN for free. I'm running UniFi 3. Generally speaking, command line options will override environment variables which will override user defaults which will override system defaults. (keep the "-wx" part) Note that as of August 2012 there are no packages for Ubuntu 11. This is because the configuration files usually found in the conf directory are stored in ZooKeeper so they can be propagated across the cluster. 04 - In this article, we will learn about how to install and configure the Nginx Web server. For example, if you have installed WordPress on your primary domain the wp-config. It is only to show authentication success/failures in the logs (useful for troubleshooting why someone cannot connect). Nginx is the most popular web server where some of the most popular and…. This is required to run UniFi Controller as a Windows service. For a list of available configuration options, see npm help 7 config. As a service provider, you may wish to host a centralized controller in the cloud so that you can manage multiple networks from a single location. Use the full path to that startssl-chain. 6 for 1 last update 2019/07/10 Linux. Apache HTTP Server is configured by placing directives in plain text configuration files. Look for an NTFS partition – it is likely to be the one windows is on. This quick guide will show you how to install and enable SSH in Linux Mint, allowing you to remotely access the operating system over the network through SSH. UBUNTU VPN CONFIG FILE LOCATION for All Devices. 24/7 Support. 04 LTS April 22, 2016 Here’s how to enable Secure Shell (SSH) service in Ubuntu 16. The file should have the following lines: auto eth0 iface eth0 inet dhcp. dirs could be modified as. json file on the UniFi Controller for the branch-office site, add the Request Routing configuration, force a re-provision of the USG using the GUI. Therefore, we say the 1 last update 2019/10/08 card has a openvpn config file location ubuntu 2. If a default NetworkManager. conf; Go to the "" section; Change "php_value upload_max_filesize = 2M" to a higher value. There are no secret files. Where are the configuration files located for PostgreSQL 11 on Ubuntu, specifically 16. properties file, where it should be created and some sample configuration nodes. Ubuntu provides you with the three iptables binaries (iptables, iptables-save, and iptables-restore) to work with. Press J to jump to the feed. How to Install and Configure the ELK Stack on Ubuntu 16. Edit letsencrypt. For these reasons, it is a great alternative to the more commonly used Apache webserver. Unless you want to run multiple versions of Webmin at the same time you can just accept the defaults. The controller is running on Ubuntu 16. dbconfig-common on Debian 6 and Ubuntu 10. There's no balance transfer fee on transfers requested in the 1 last update 2019/08/24 first 60 days plus a ubuntu openvpn config file location long introductory rate which is great if you have a ubuntu openvpn config file location large balance you need to pay off. How to Make Your Wireless Network Invisible. ##openvpn config file location ubuntu best vpn for gaming | openvpn config file location ubuntu > USA download nowhow to openvpn config file location ubuntu for Global Sites XenApp, XenDesktop, XenMobile openvpn config file location ubuntu and openvpn config file location ubuntu XenServer are part of the 1 last update 2019/10/04 Xen® family of. WordPress stores your database information in a file called wp-config. mhow to ubuntu openvpn configuration file for Port forwarding unifi for 1 last update 2019/09/20 TP-Link Archer C1200 router. There are at least 3 ways you can migrate UniFi controller settings to a new controller software. Types: Android VPN, iPhone VPN, Mac VPN, iPad VPN, Router VPN. Configure Apache Virtual Hosts in Ubuntu 18. Scroll down the list to find the following settings: Daemon - Changing this to "on" will make it run in daemon mode. Then, create the configuration file to rotate your UniFi and MongoDB logs. UniFi Video. ) To learn it better and 2. 3 and tvOS 12. This file allows you to make customizations persistent across provisions. Setup and Configuration of FreeRadius + MySql on Ubuntu 14. The format of this file is described above. In the global settings, define the default interval for scraping metrics. To enable SELinux, Open the /etc/selinux/config file and set SELINUX=enforcing: SELINUX=enforcing. r/Ubiquiti: This is an unofficial community-led place to discuss all of Ubiquiti's products, such as the EdgeRouter, Unifi, AirFiber, etc. If you have ever used used Ubuntu, you know that the root account is disabled. Wireless APs and Switches | UniFi When all of your network devices lose access to the internet all at the same time regularly throughout the day, there is not much to blame other than a bad network cable to your Wireless Access Point (AP), or the Access Point itself. We hope this Share File between Ubuntu and Windows article helped you to share file between Ubuntu and Windows 10 easily like a pro Linux user. We have the controller software set up on a machine that is used for shipping. The ubuntu package (from APT) uses /etc/apache2/ apache2. Now there’s a small problem, depending on your Linux, BSD or Unix distro, Find command can be slightly different (in terms of Syntaxes). conf is located in each Linux distribution in /etc/wsl. 04 Install Synaptic Package Manager In Ubuntu 18. Here is a full guide on how to install phpIPAM on Ubuntu linux 17. Is there a way to backup my controller so that I can move it to the VM without using the webpage?. Testing the configuration. Unifi Access Points are provisioned and controlled by a central management software called Unifi. There was one additional change I had to for Unifi Docker reverse proxy to work. 04 Natty Narwhal and 11. I've seen that this can happen when you dump the config, but I didn't do that. Fast Servers in 94 Countries. Right now, this includes automount options and network configuration. The default username and password is ubnt. FPM uses php. Types: Android VPN, iPhone VPN, Mac VPN, iPad VPN, Router VPN. Create the CloudWatch Agent Configuration File with the Wizard The agent configuration file wizard, amazon-cloudwatch-agent-config-wizard, asks a series of questions, including the following:. We will also add some more files for virtual domain/mail system. Do this carefully – Now check to see if this is the partition by. This is because the configuration files usually found in the conf directory are stored in ZooKeeper so they can be propagated across the cluster. Configuration and Credential Files. The configuration files are indeed in the Home/. 24/7 Support. The file is located in the moodle directory. conf file and not an httpd. list file in Ubuntu. Welcome to LinuxQuestions. m OPENVPN CLIENT CONFIG FILE LOCATION UBUNTU ★ Most Reliable VPN. 04 This is useful for configuration notes. This post is geared toward Ubuntu (Debian) + Apache, but should work on most systems - Just apply the permissions and update location/path in given config (apache/nginx/etc). connect to mysql database which is in ubuntu server. Installing Minikube Dependencies: Before we can start installing Minikube, we have to install some dependencies of Minikube. They were looking at increasing their available IP addresses by about 200, and their current network was a /24 (192. If the SSL key files are protected correctly (directory & files), you will be fine. So the Unifi Controller provides an easy way to inject additional configuration. 04 (Precise). Click the UniFi Video image in the UniFi Video configuration portal to log in. It produces 270 hp and 295 lb-ft of torque, and is only pairable with the 1 last update 2019/10/09 eight-speed auto. hostname uses the sethostname(2) function, while all of the three domainname, ypdomainname and nisdomainname use setdomainname(2). Hi, today I am sharing how to install ubiquiti unifi controller on an Ubuntu Server VM, for that you will need the following A Ubuntu Server VM with ssh enabled (in case you access via putty or any other ssh clients). Support length. you can use below command to find config file. The PHP settings and configuration can be modified by the php. 04) trusty with transmission-daemon 2. These are called "profiles". Backup UniFi Controller – Backblaze B2 Free automated backup solution for UniFi A huge upside to how the UniFi Controller works is that it’s not really dependent on where it runs to operate, it does however require the DNS hostname, some firewall ports and most importantly, the site data. conf, the contents of httpd. conf on a Linux server running PostgreSQL 8. 1 2) stop/restart mysql daemon Connections now are not limited to those from localhost (what you are when you ssh). BRUH2-Home-Assistant-Configuration - No longer maintained #opensource. So don't worry about if there is no. 3, and will be available on Mac this fall. Fontconfig is a library designed to provide a list of available fonts to applications, and also for configuration for how fonts get rendered. Wordpress is an CMS ( Content Management System ), mostly used as a blog publishing web application. To be able to view it, open your home folder and press Ctrl + H. Download OpenVPN for free. By default, Odoo server listens to port 8069 on all interfaces, so if you want to disable direct access to your Odoo instance you can either block the port 8069 for all public interfaces or force Odoo to listen only on the local interface. The http integration serves all files and data required for the Home Assistant frontend. Setup supports the use of the configuration file only through the command prompt. The configuration is mostly done through various configuration files. Do this carefully – Now check to see if this is the partition by. Ubiquiti Networks heeft een stabiele versie vrijgegeven van UniFi, met 5. Where are the configuration files located for PostgreSQL 11 on Ubuntu, specifically 16. 04 is /var/www/html/:. htaccess files to change the scope of other configuration directives. The file should have the following lines: auto eth0 iface eth0 inet dhcp. Warning: Prometheus’ configuration file uses the YAML format, which strictly forbids tabs and requires two spaces for indentation. But you still need to select a mirror of the CPAN. Use the full path to that startssl-chain. 04 This is useful for configuration notes. We have an array of 6 of them. I'm running UniFi 3. After installing the necessary packages, its time to configure mod_fcgid. UniFi Video. I'm not a Solaris user and hence cannot discuss the effect of symlinks on that particular host OS, but I would suspect that one or both of your user accounts lack proper rights to access another users data area,. sudo nano /etc/nginx/nginx. Where Does Linux Save Wireless Card Settings? A. Does anyone know where the Gedit configuration file/s are located?I knowthat the ~/. I've already tried manually creating the unifi-video user on my ubuntu box and setting its UID to 99 and GID to 1001, but that hasn't made a difference. Some features are as follows: It combines the best of MS office and Google Docs. json provisioning file for my USG. It manages the UniFi Video Cameras and records video according to rules set up in the software. SSH into your Instance as the user "ubuntu" using your Key Pair. m OPENVPN CLIENT CONFIG FILE LOCATION UBUNTU ★ Most Reliable VPN. mhow to ubuntu openvpn configuration file for Port forwarding unifi for 1 last update 2019/09/20 TP-Link Archer C1200 router. cf and master. The file should have the following lines: auto eth0 iface eth0 inet dhcp. I've just moved from armbian ubuntu (14. There are plenty of options that you can customize in the config file, but there are only a few things that we are interested in. 1As is, the system is comfigured with primary and guest network SSIDs, several APs & dozens of users almost 24x7, so the transition has to be pretty seemless because so. 10 seems to neither detect my graphics card (Intel 82852/855GM) automatically nor use the corresponding Intel driver even after manually installing it, I am looking into manually configuring X (shouldn't I?). There's no balance transfer fee on transfers requested in the 1 last update 2019/08/24 first 60 days plus a ubuntu openvpn config file location long introductory rate which is great if you have a ubuntu openvpn config file location large balance you need to pay off. FPM uses php. Using Lets Encrypt to secure cloud-hosted services like Ubiquiti's mFi, Unifi and Unifi Video. 04 should be ready in less than 20 minutes. Enabling logging on iptables is helpful for monitoring traffic coming to our server. Linux saves network related settings under /etc directory. In the first browser page, restore the config from the previsouly saved. Scroll down the list to find the following settings: Daemon - Changing this to "on" will make it run in daemon mode. 24/7 Customer Service. ssh/config This is the per-user configuration file. Linux environments you install from the Store (like Ubuntu and openSUSE) keep their files in a hidden folder. Normally the main Apache configuration file is called httpd. In addition, OpenSSH provides a large suite of secure tunneling capabilities, several authentication methods, and sophisticated configuration options. This is where I store some of the files common to several containers. 04, and secure them with username/password authentication, this is useful if you are setting up a NAS or Storage server that can later be accessed by most operating systems. How to Install and Configure RabbitMQ. Setup supports the use of the configuration file only through the command prompt. Support length. Ubiquiti Networks heeft een stabiele versie vrijgegeven van UniFi, met 5. hostname uses the sethostname(2) function, while all of the three domainname, ypdomainname and nisdomainname use setdomainname(2). 04 as default operating system. Enable the cgi-bin location as defined by the custom virtual hosts layout. I have backe dup my Unifi config. SSH provides an encrypted secure channel between you and the server without the need for a secure network. Sometimes I'm asked where to find the Apache configuration file on a given server. ovpn file OpenVPN is using, and the process to configure OpenVPN on Windows will be complete. This is the only way to activate the new settings. OPENVPN SERVER CONFIG FILE LOCATION UBUNTU for All Devices. They also have fantastic support and awesome tutorials. The first. Installing scp. An administrator enters routes into the router using configuration commands. To enable SELinux, Open the /etc/selinux/config file and set SELINUX=enforcing: SELINUX=enforcing. To create this article, 27 people, some anonymous, worked to edit and improve it 1 last update 2019/09/30 over time. The goal of this section is to provide a short overview about the most common and most important default file locations. 1 2) stop/restart mysql daemon Connections now are not limited to those from localhost (what you are when you ssh). Location of networking config file in Ubuntu [closed] Ask Question Asked 7 years, 3 months ago. If you have severe problems with the display, you will need to connect the SD card to a PC so that you can edit the configuration file. Use the full path to that startssl-chain. The following shows the directives for worker connection and in which user name Nginx process should run. /etc/ssh/ssh_config Systemwide configuration file. Main config file is config/config. The files will immediately start to download. xml file is Tomcat's main configuration file, and is responsible for specifying Tomcat's initial configuration on startup as well as defining the way and order in which Tomcat boots and builds. The backup also includes the config. yml and exit. gconf folder but files don't exist for default options. If the file is not there, you can create it yourself. OnlyOffice is formerly known as Teamlab Office. 24/7 Customer Service. We also need to create some new rules and enable syslog server. The installation instructions provided by Ubiquiti aren't the best so here's my take on it. It is easy to manage in small networks but does not scale well. I'd like to get more information about my wireless settings stored under CentOS / RHEL / Fedora Linux. It goes on the 1 last update 2019/09/28 screen easily and keeps your Switch from getting scratches in its beautiful screen. i hope this will work. This guide lists the default installation layouts for Apache HTTPD on various operating systems and distributions. Linux environments you install from the Store (like Ubuntu and openSUSE) keep their files in a hidden folder. Accordingly, this configuration file is quite complex. #windows #linux #apt #configuration Using Windows Subsystem for Linux (WSL) can be a great tool for dev's, op's, and admin's alike. xml" this will give path to config. How to Install PHP 7. In this example, we will search for 'PULSEAUDIO_SYSTEM_START‘ in all configuration files located in /etc directory. conf) location Jun 08, 2011. It standarized multiple profiles for different use-cases such as music streaming, serial connections, message exchange, phone calls, and many others. 04 LTS April 22, 2016 Here’s how to enable Secure Shell (SSH) service in Ubuntu 16. It makes it much more difficult for people to mooch off of your WiFi and. Where are the files postgresql. https://unifi. Where can I find the configuration files I need to edit?. d/ may exist. I have installed Ubuntu subsystem on Windows 10 (after enabling feature in settings), but where is the Ubuntu file system root directory located in the drive? windows-subsystem-for-linux share | improve this question. If there are any changes to the Point-to-Site VPN configuration after you generate the VPN client configuration files, such as the VPN protocol type or authentication type, be sure to generate new VPN client configuration files for your user devices. but the use of a config file with IdentityFile is pretty much your only option if you want to specify which identity to use for any git commands. php file will be located in the public_html directory of your hosting account. I'm using the Ubuntu 16. The Linux distro and virtualization software being used are Ubuntu Server 16. Let’s get started. ini syntax for its configuration files php-fpm. Where are the configuration files located for PostgreSQL 11 on Ubuntu, specifically 16. conf As you can see, the config file is already being specified, so all you need to do to make config changes to your MongoDB service is edit that file at /etc/mongodb. User-specific config is stored in the user's home directory, often as a hidden file, sometimes as a hidden directory containing non-hidden files (and possibly more subdirectories). Nginx is the most popular web server where some of the most popular and…. This article describes an installation of Wordpress on a Ubuntu Linux system using Apache web-server and MySQL database. Note: Advanced configuration options, such as network settings, may be accessed by clicking the configuration icon. For example, if you have installed WordPress on your primary domain the wp-config. Windscribe VPN setup guide for Ubuntu. For example, for the Cloud Key, you will not be able to drag and drop as you would for Windows or macOS. 9 is running and it sees the UAP when i click adopt it shows adopting for a few minutes then shows disconnected, the UAP is connected to an edgerouter x inside of my ISP router , is there ports i need to open. How to Install a Custom SSL Certificate in UniFi Video August 14, 2017 February 20, 2019 Sam Kear Linux The default installation of Ubiquiti's UniFi Video software uses a self signed certificate for the web interface. m ubuntu openvpn config file location the 1 last update 2019/10/04 next day. Updated Nov 27, 2018: Updated credentials for new unifi versions (uses a new username). WordPress stores your database information in a file called wp-config. Enable SSH in Linux Mint. Edit file: /etc/ssh/sshd_config be sure the following three lines are uncommented: X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes. The processing order of the parameters while using the configuration file is outlined below: The configuration file overwrites the defaults in a package. By editing the config. json file on the UniFi Controller for the branch-office site, add the Request Routing configuration, force a re-provision of the USG using the GUI. I'm using the Ubuntu 16. list and installed only the daemon "deluged". p7b file, and one ca-bundle file. mhow to ubuntu vpn config file location for If you forgot the 1 last update 2019/09/19 passcode for 1 last update 2019/09/19 your iPhone, iPad, or iPod touch, or your device is disabled. php (which is included in Moodle packages). A transient (we were bought in to assist migration to new MSP) customer wanted to increase DHCP addresses without creating a VLAN. Enable SSH in Linux Mint. ), and if you are upgrading from a distro package that had added them, they will be removed. unf and contains the settings and the database for the UniFi Network Controller. 22 and host name is ubuntuserver. The Linux distro and virtualization software being used are Ubuntu Server 16. Note: replace your. Webmin uses separate directories for configuration files and log files. xmllint icecast. 82 to armbian debian jessie with transmission-daemon 2. We are going to install Mosquitto on a Ubuntu 16. Locate configuration files. This short article describes some basic of sudo usage and format of sudoers configuration file.