dpkg command HowTo - Linux / Unix Q & A from nixCraft

How to get list of installed packages on Ubuntu / Debian Linux

February 5, 2017February 9, 2017in Debian / Ubuntu, Linux, Package Management, Ubuntu Linux last updated February 9, 2017

I am a new Ubuntu Linux sysadmin. How do I get a list of all installed packages on server1 and install those on server2? How to list all installed packages using apt-get command on Ubuntu or Debian server?

How to find out when Debian or Ubuntu package installed or updated

January 15, 2016January 15, 2016in Debian / Ubuntu, Linux, Package Management last updated January 15, 2016

How do I find and list installed Debian or Ubuntu Linux packages date? How can I see when packages got updated on my systems?

Debian / Ubuntu Linux Delete Old Kernel Images Command

November 23, 2015October 24, 2016in Debian / Ubuntu, Linux, Package Management, Troubleshooting, Ubuntu Linux last updated October 24, 2016

I‘m a new Ubuntu Linux user and noticed that old kernel still exists in my system. Why doesn’t Ubuntu remove old kernels automatically? How do I delete old unused kernel images to free disk space. How to remove unused old kernel images on Ubuntu Linux safely?

Ubuntu Linux: Install Google Chrome Browser Command

May 10, 2013October 2, 2017in Package Management, Ubuntu Linux last updated October 2, 2017

I am unable to find Google Chrome Browser in Ubuntu software center. How do I install Google Chrome in Ubuntu version 12.04 LTS or v13.04 using command line options?

Debian / Ubuntu: Find Information ( Description ) About Installed Packages

October 28, 2012in Debian / Ubuntu last updated October 28, 2012

I‘m looking for equivalent of yum info httpd command under Debian Linux. How do I display information about the installed packages on the command line under Debian or Ubuntu Linux? How do I see the description of a package under Debian or Ubuntu Linux using command line options?

Linux Find Out What Compilers Are Installed or Available On The System

October 19, 2012December 11, 2017in Linux last updated December 11, 2017

How do I find out what compilers are installed on a Debian / Ubuntu / Red hat Enterprise / CentOS Linux operating systems? How do I list all available compiler packages under a Linux operating system using the CLI?

Debian / Ubuntu Linux apt-get: Blacklist a Package From Installing

September 29, 2012in Debian / Ubuntu last updated September 29, 2012

I‘ve build my own lighttpd .deb package and I do not want to upgrade it using the apt-get command. Also, I do not want to upgrade a few more packages such as php5-cgi, httpd and so on. How do I blacklist a package or packages so that when I run apt-get upgrade, it will ignore blacklisted packages and install the rest of updates under Debian or Ubuntu Linux server system?