Sec. 10 Apt

Question 1

How would I check to see if there were any updates using apt?

Answer 1

$ sudo apt -update

Question 2

If I wanted to upgrade the system i.e. install new versions of the packages that I already have installed how would I use apt?

Answer 2

sudo apt -upgrade

Question 3

apt-cache

Answer 3

• query the APT cache
• apt-cache
  
  • ​perfoms a cariety of operation on APT’s package cache
  • does not manipulate the state of the system but does provide operations to search and generate interesting output from the package metadata

Question 4

apt-cache

–showpkg pkg…..

Answer 4

• displays info about the packages listed on the command line
• remaining arguments are package names

Question 5

apt-cache

stats

Answer 5

• stats displays statistics about the cache.
• no further arg. are expected.

Question 6

List all installed kernel-related packages, and list all installed or available ones.

Answer 6

$ apt-cache search “kernel”
$ apt-cache search -n “kernel”
$ apt-cache pkgnames “kernel”

Question 7

. All packages that contain a reference to bash in their name or description.

Answer 7

$ apt-cache search bash

Question 8

. Installed and available bash packages.

Answer 8

. $ apt-cache search -n bash

Question 9

The package information for bash.

Answer 9

$ apt-cache show bash

Question 10

The dependencies for the bash package.

Answer 10

$ apt-cache depends bash
$ apt-cache rdepends bash

Question 11

To get a list of of available metapackages:

Answer 11

$ apt-cache search metapackage

Question 12

apt-cache stats

Answer 12

displays some statistics about the cache.

no further arg are needed

Question 13

apt-cache showpkg pkg

Answer 13

displays info about the packages listed on the command line.

remaining arg are package names

Question 14

apt-cache showsrc pkg….

Answer 14

displays all the source package records that match the given package names .

all versions are shown, as well as all records that declare the name to be a binary package.

use –only-source to display only source packages names

Question 15

apt-cache dump

Answer 15

shows a short list of every package in the cache

used primarily for debugging

Question 16

apt-cache dumpavail

Answer 16

prints out an available list to stdout .

Question 17

apt-cache unmet

Answer 17

show a summary of all unmet dependencies in the package cache

Question 18

apt-cache show pkg….

Answer 18

performs a function simlar to dpkg –print-avail ; it displays the package records for the named packages .

Question 19

apt-search regex……

Answer 19

performs a full text search on all available package lists for the POSIX regex pattern given,

it searches package names and the descriptions, including virtual package names .

if –full is given then the output identical to shwo is produced for each matched package.

Question 20

apt-cache depends pkg….

Answer 20

shows a listing of each dependency a package has and all the possible other packages that can fulfill that dependency.

Question 21

apt-cache rdepends pkg….

Answer 21

shows a listing of each reverse dependency a package has.

Question 22

apt-cache pkgnames [prefix]

Answer 22

this command prints the name of each package apt knows.

Question 23

apt

Answer 23

command line interface

apt provides a high-level comandline interface for the package management system