linux – Page 29

Repair Grub with GUI in Ubuntu

February 18, 2017

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

References
https://help.ubuntu.com/community/Boot-Repair

Configure Let’s Encrypt for Apache on Ubuntu

February 8, 2017

sudo apt-get install python-letsencrypt-apache

letsencrypt --apache

nano /etc/apache2/apache2.conf

<VirtualHost *:443>
	SSLEngine on
	SSLCertificateKeyFile /etc/letsencrypt/live/dl.mhdr.ir/privkey.pem
	SSLCertificateFile /etc/letsencrypt/live/dl.mhdr.ir/cert.pem
	SSLCertificateChainFile /etc/letsencrypt/live/dl.mhdr.ir/chain.pem
    DocumentRoot "/var/www/html/dl"
    ServerName dl.mhdr.ir
</VirtualHost>

service apache2 restart

PPA

$ sudo add-apt-repository ppa:certbot/certbot
$ sudo apt-get update
$ sudo apt-get install python-certbot-apache

note : only the last VitualHost will be detected by letsencrypt
References
https://certbot.eff.org/#ubuntuxenial-apache
https://www.digitalocean.com/community/tutorials/how-to-use-apache-http-server-as-reverse-proxy-using-mod_proxy-extension
https://letsencrypt.org/

Generating a new SSH key pair for GitLab on Linux

February 4, 2017

ssh-keygen -t rsa -C "GitLab" -b 4096

copy the public key

xclip -sel clip < ~/.ssh/id_rsa.pub

Install GitLab on Ubuntu 16.04

February 4, 2017

sudo apt-get install curl openssh-server ca-certificates postfix

curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | sudo bash
sudo apt-get install gitlab-ce

sudo gitlab-ctl reconfigure

References
https://about.gitlab.com/downloads/#ubuntu1604

SimpleScreenRecorder PPA

February 1, 2017

sudo add-apt-repository ppa:maarten-baert/simplescreenrecorder
sudo apt-get update
sudo apt-get install simplescreenrecorder
# if you want to record 32-bit OpenGL applications on a 64-bit system:
sudo apt-get install simplescreenrecorder-lib:i386

References
http://www.maartenbaert.be/simplescreenrecorder/

A Problem has been detected with your thumbnail cache.Fixing it will require administrative priviliges

January 31, 2017

sudo nemo --fix-cache

References
http://askubuntu.com/questions/673739/a-problem-has-been-detected-with-your-thumbnail-cache-fixing-it-will-require-ad

Install CopyQ on Ubuntu

January 31, 2017

References
https://github.com/hluk/CopyQ/releases
https://github.com/hluk/CopyQ/blob/master/INSTALL

List The Open Ports And The Process That Owns Them on Linux

January 29, 2017

sudo lsof -i
sudo netstat -lptu
sudo netstat -tulpn

References
https://www.cyberciti.biz/tips/linux-display-open-ports-owner.html

Install Groovy on Linux

January 26, 2017

curl -s get.sdkman.io | bash

source "$HOME/.sdkman/bin/sdkman-init.sh"

sdk install groovy

References
http://www.groovy-lang.org/install.html

Installing Apache Cassandra on Ubuntu

January 13, 2017

echo "deb http://www.apache.org/dist/cassandra/debian 39x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list

curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add -

sudo apt-get update

sudo apt-key adv --keyserver pool.sks-keyservers.net --recv-key A278B781FE4B2BDA

sudo apt-get install cassandra

sudo service cassandra start

sudo service cassandra stop

References
http://cassandra.apache.org/download/