Debian

Console

• Bulk rename files on a linux system
• Clear the history
• Debian, ssh
• Encrypt a file using gpg
• Find out bits of linux
• debian, dig
• rename a user / change username

Config/Setup/Install

System

• .bashrc
• 32 bit apps on 64 bit debian
• Add non-free firmware drivers
• Debian Proxy on command line
• Debian, alternatives, change defaults for editor or browser
• Debian, entries for the sources.list, apt-get
• Debian, new installation
• Debian, start something at system start
• Firehol
• Linux history with date
• apt-get, proxy
• debian, create swapfile
• debian, minimum to send mail but not receive any
• Check disks

lsblk -f

• Error: update-initramfs warning: initramfs-tools configuration sets RESUME but no matching swap device is available

Use a backport

(source)

• Using a backport

upgrade Debian to the next major version

8 -> 9 (jessie -> stretch)

cat /etc/issue
apt-get update
apt-get upgrade
apt-get dist-upgrade
sed -i 's/jessie/stretch/g' /etc/apt/sources.list
apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get -y autoremove
shutdown -r now
cat /etc/issue

9 -> 10 (stretch -> buster)

cat /etc/issue
apt-get update
apt-get upgrade
apt-get dist-upgrade
sed -i 's/stretch/buster/g' /etc/apt/sources.list
apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get -y autoremove
shutdown -r now
cat /etc/issue

10 -> 11 (buster -> bullseye)

cat /etc/issue
apt-get update
apt-get upgrade
apt-get dist-upgrade
sed -i 's/buster/bullseye/g' /etc/apt/sources.list
sed -i 's/bullseye\/updates/bullseye-security/g' /etc/apt/sources.list
apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get -y autoremove
shutdown -r now
cat /etc/issue

or something shorter but with less control:

apt-get update && apt-get -y upgrade && apt-get -y dist-upgrade
sed -i 's/buster/bullseye/g' /etc/apt/sources.list
sed -i 's/bullseye\/updates/bullseye-security/g' /etc/apt/sources.list
apt-get update && apt-get -y upgrade && apt-get -y dist-upgrade && apt-get -y autoremove
shutdown -r now
cat /etc/issue

date uses wrong timezone, shows wrong format

timedatectl list-timezones | grep Berlin
timedatectl set-timezone Europe/Berlin

man date
vi ~/.bashrc
alias date="date +'%F %T'"

Other

• Debian, E-Mail server
• Apache 2
• Installing MediaWiki on Debian

• Debian, Citrix client
• Debian, create self signed SSL certificate
• Icedove, attachment list empty, can't open attachment
• Install mumble server
• Install ncurses for php on Debian
• Jabber server jabberd14
• Oracle developer, Type the full pathname of a J2SE installation
• PHP 5.3 with stable debian
• Upgrade Debian Jessie with MediaWiki to Stretch
• debian, apt-get for qmake/make

sudo

apt-get install sudo
adduser <user> sudo
adduser andreas sudo

User andreas has to relogin for the new group to be enabled.

top

The output of top looks uninteresting and is bad to read. This does not have to be that way. Download Media:Top-config.zip to your home directory, unzip it and hope it does not crash/destroy something in your system. I only tested this with Debian 10.

• download to your home directory
• unzip
• call top

top

I just pressed '?' and tried the things they tell you there. Then I zipped the result.

install c++

sudo apt-get install build-essential manpages-dev libstdc++-8-doc

If libstdc++-8-doc does not exist, check for later versions. libstdc++-9-doc ...

Repository changes

This must be accepted explicitly before updates for this repository can be applied. See apt-secure

apt-get update --allow-releaseinfo-change