In Ubuntu and Debian, software comes in a .deb file format. Even if you're not an expert, you can still peek inside a deb file before installing the software. Extracting a deb file means taking a look at its contents,…
When you try to run any command with sudo in Fedora, RHEL, CentOS or Debian and some other linux distro, then you will get below error.
USERNAME is not in the sudoers file. This incident will be reported.
Here USERNAME is your current active logged in username. Here my system username is “manikandan” and my error message,
manikandan is not in the sudoers file. This incident will be reported.
In Fedora, RHEL, CentOS or Debian and some other Linux distributions by default the regular user does not have an ability to execute commands with root privileges. In linux there are two common ways to execute commands as the root administrator privileges. You can do this by “su” and “sudo” commands. Here you can use the su with your root password. Like “su root”. But this is a not a good practice. But you can use the sudo command with your own user password. This can only be used by users who have been authorized by the administrator (root user). Using this you can access the system without sharing the password of the root user.
Debian 8 codenamed jessie is now available for download.which will be supported for the next 5 years.
What’s new in this release?
Ships with several desktop applications and environments GNOME 3.14, KDE 4.11, Xfce 4.10, and LXDE.
New default init system (systemd)
LibreOffice is upgraded to version 4.3;
Calligra is upgraded to 2.8;
GNUcash is upgraded to 2.6;
GNUmeric is upgraded to 1.12;
Abiword is upgraded to 3.0.
legacy secure sockets layer protocol SSLv3 has been disabled.
OpenJDK 7 is the new supported default Java runtime.
OpenJDK 8 will be available from jessie-backports.
Tomcat 7 and Tomcat 8 are supported and Tomcat 6 was removed.
New developer tools including VisualVM, the Dynamic Code Evolution VM (openjdk-7-jre-dcevm), Gradle, eclipse-wtp-webtools, closure-compiler and more.
Inclusion of androidsdk-tools
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According to Joey Hess, a developer of the Debian Installer Team, Xfce is now the default desktop choice for Debian Wheezy.And the main reason for this move is the size of GNOME.
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