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dpkg command

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

How do I find and list installed Debian or Ubuntu Linux packages date? How can I see when packages got updated on my systems?
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Debian / Ubuntu Linux Delete Old Kernel Images Command

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?
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Ubuntu Linux: Install Google Chrome Browser Command

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

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

How do I find out what compilers are installed under Debian / Ubuntu / Red hat Enterprise / CentOS Linux operating systems? How do I list all available compiler packages under Linux?
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Debian / Ubuntu Linux apt-get: Blacklist a Package From Installing

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?
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Find Out PHP Version installed On Unix / Linux Server

How do I find out php version under Linux operating systems? How do I find out php version under Unix like systems? How to find out what version of PHP is installed on my server?
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Find Out MySQL Version

How do I find out mysql version under Linux or Unix operating systems?
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Ubuntu Linux Find JDK Version

How do I find out my JDK version under Ubuntu Linux operating systems? How do I find out JDK version under any Linux distribution?
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Ubuntu Uninstall deb Package

How do I uninstall deb packages under Ubuntu Linux using GUI or CLI (command line) methods?
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