Introduction[edit]

Quote Debian package command-not-found ^[archive]:

Suggest installation of packages in interactive bash sessions This package will install a handler for command_not_found that looks up programs not currently installed but available from the repositories.

Installation[edit]

The order in which these commands are run matter, ^[1] but the process is idempotent. This means it is possible to re-apply all of the following steps.

1. Delete /etc/apt/apt.conf.d/30usability-misc ^[archive] because it contains settings that speed up APT ^[archive] but break command-not-found. ^[2]

sudo rm -f /etc/apt/apt.conf.d/30usability-misc

sudo rm -f /etc/apt/apt.conf.d/30usability-misc

2. Install command-not-found.

Install command-not-found.

1. Update the package lists.

sudo apt update

sudo apt update

2. Upgrade the system.

sudo apt full-upgrade

sudo apt full-upgrade

3. Install the command-not-found package.

Using apt command line parameter --no-install-recommends is in most cases optional.

sudo apt install --no-install-recommends command-not-found

sudo apt install --no-install-recommends command-not-found

4. Done.

The procedure of installing command-not-found is complete.

3. Run update-command-not-found with root rights.

sudo update-command-not-found

sudo update-command-not-found

4. Done.

Setup of update-command-not-found has been completed.

Issues[edit]

local variable 'cnf' referenced before assignment[edit]

Footnotes[edit]

↑ Also apt update cannot be skipped since package contents files need to be downloaded.
↑
```
Acquire::IndexTargets::deb::Contents-deb::DefaultEnabled false;
```
breaks command-not-found because it requires /var/lib/apt/lists/*Contents* to exist.
See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857090 ^[archive]