Backup PostgreSQL Database
To backup PostgreSQL database, run Example If you don’t have PostgreSQL installed, you can use docker, pull the appropriate version of docker…
Linux
Microsoft Acquires GitHub, Migrate to GitLab
Microsoft on 4th June 2018 announced it reached agreement to acquire GitHub, worlds largest git repository hosting site used by developers. Under…
Install unrar on Linux
To install unrar on Ubuntu, run apt install -y unrar On CentOS/RHEL yum install unrar To install from source, download latest version…
Adding IP Range in CentOS 6
To add an IP range in CentOS 6 server, create file vi /etc/sysconfig/network-scripts/ifcfg-eth0-range0 Add IPADDR_START=67.198.150.171 IPADDR_END=67.198.150.174 CLONENUM_START=0 Replace IP with your actual…
gpg: failed to start the dirmngr
When i add a key with apt-key command, i get error root@ip-172-31-47-128:~# apt-key adv –recv-keys –keyserver keys.gnupg.net E1F958385BFE2B6E Executing: /tmp/apt-key-gpghome.0BP6Ro2t54/gpg.1.sh –recv-keys –keyserver…
Install Remote Desktop in Debian/Ubuntu
To install and use Linux remote server as desktop, first install lite weight desktop environment like XFCE on your server. apt update…
Desktop
Install x2go Server in Ubuntu 16.04 x2go xrdp vnc Install Remote Desktop in Debian/Ubuntu Google Meet How to install and use rdesktop
Security
ZAP Attack Proxy – open source software to detect vulnerability. Disable PHP insecure functions with disable_functions Find IP with Most Access from…
Disable PHP insecure functions with disable_functions
When hacking vulnerable web sites, hackers use PHP functions that allow program execution or disk access to get access to server. Some…
Install MongoDB 4 on CentOS 7
Create file vi /etc/yum.repos.d/mongodb-org-4.0.repo Add [mongodb-org-4.0] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/testing/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc Install MongoDB with yum install -y mongodb-org Set MongoDB to…
Enable Gzip in Amazon Linux
To verify Apache module is loaded, run [root@ip-172-31-29-220 ~]# apachectl -M | grep deflate deflate_module (shared) [root@ip-172-31-29-220 ~]# Create file vi /etc/httpd/conf.d/gzip.conf…