sudo add-apt-repository ppa:jonathonf/ffmpeg-4 sudo apt-get update sudo apt-get install ffmpeg
Category: Server
Disable apache server status in ubuntu
sudo a2dismod status
sudo systemctl restart apache2.service
Create username password for apache tomcat user
sudo vi /opt/tomcat/conf/tomcat-users.xml
<role rolename="manager-gui"/> <user password="" roles="manager-script,admin" username=""/> <user password="" roles="manager-gui,manager-script,admin" username=""/>
then restart tomcat service
sudo systemctl restart tomcat.service
Switch to another user in linux
su username
Switch to root user in Linux
sudo -i
Show current user login in linux
whoami
Create Service For Apache Tomcat
cd /etc/systemd/system sudo vi tomcat.service then insert following lines -
[Unit] Description=Apache Tomcat Web Application Container After=network.target [Service] Type=forking Environment=JAVA_HOME=/usr/lib/jvm/java-1.11.0-openjdk-amd64 Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid Environment=CATALINA_HOME=/opt/tomcat Environment=CATALINA_BASE=/opt/tomcat Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC' Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom' ExecStart=/opt/tomcat/bin/startup.sh ExecStop=/opt/tomcat/bin/shutdown.sh #User=tomcat #Group=tomcat UMask=0007 RestartSec=10 Restart=always [Install] WantedBy=multi-user.targetsudo systemctl daemon-reload Start tomcat sudo systemctl start tomcat.service Stop tomcat sudo systemctl stop tomcat.service Restart tomcat sudo systemctl restart tomcat.service Enable service after restart automatic tomcat start sudo systemctl enable tomcat.service
Install apache tomcat 9 in ubuntu 18.04
- cd /tmp
- curl -O https://downloads.apache.org/tomcat/tomcat-9/v9.0.37/bin/apache-tomcat-9.0.37.zip
- sudo mkdir -p /opt/tomcat
- unzip apache-tomcat-9.0.37.zip
- rm -rf apache-tomcat-9.0.37.zip
- mv apache-tomcat-9.0.37/* /opt/tomcat/
- cd /opt/tomcat
- sudo chmod -R 0777 /opt/tomcat
- sudo update-java-alternatives -l
- Then Create a system service
OUTPUT – java-1.11.0-openjdk-amd64 1111 /usr/lib/jvm/java-1.11.0-openjdk-amd64