Software Installation

Syntax#

sudo apt-get install <package_name>
sudo apt-get install <package1_name> <package2_name> <package3_name>
apt-get [options] [-o config=string] [-c=cfgfile] command [pkg]

Parameters#

Command	Description
update	Used to re-synchronize the package index files from their sources. An update should always be performed before an upgrade or dist-upgrade.
upgrade	Used to install the newest versions of all packages currently installed on the system.
install	This option is followed by one or more packages desired for installation.
remove	Identical to install except that packages are removed instead of installed.
------	------
Options	Description
-y, —yes, —assume-yes	Automatic yes to prompts. Assume “yes” as answer to all prompts and run non-interactively.
-h, —help	Show a short usage summary.
## Install software using APT
Installing software via APT (Advanced Package Tool) also know as ‘apt-get’.
To install Mozilla Firefox:

Open a Terminal (Ctrl+Alt+T)
Type sudo apt-get install firefox
Hit Enter
When it asks to install type ‘Y’ to confirm.

Software will be downloaded and installed.

List all installed packages

To list all the packages installed in ubuntu, type below command

$ apt list --installed

Output will show all the installed packages.

Listing... Done
   accountsservice/trusty-updates,now 0.6.35-0ubuntu7.3 i386 [installed]
   acl/trusty,now 2.2.52-1 i386 [installed,automatic]
   acpid/trusty,now 1:2.0.21-1ubuntu2 i386 [installed]
   adduser/trusty,now 3.113+nmu3ubuntu3 all [installed]
   apparmor/trusty-updates,trusty-security,now 2.10.95-0ubuntu2.6~14.04.1 i386 [installed]
   apport/trusty-security,now 2.14.1-0ubuntu3.23 all [installed,upgradable to: 2.14.1-0ubuntu3.24]
   apport-symptoms/trusty,now 0.20 all [installed]
   apt/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-transport-https/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-utils/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-xapian-index/trusty,now 0.45ubuntu4 all [installed]
   aptitude/trusty,now 0.6.8.2-1ubuntu4 i386 [installed]