Image source: Willi Glenz - MyDebianDesktop

0079 documentation $ w3m https://wiki.debian.org/FrontPage
0072 configuration ~/.bashrc $ alias c='clear; ncal -3wy'
0070 system management $ gnome-<tab><tab>
0061 modules $ lsmod | wc -l
0059 sources $ w3m https://linux.die.net/Intro-Linux/chap_10.html
0052 # visudo
0048 $ echo {1..199}" bottles of beer on the wall, cold bottle of beer, take one down, pass it around, one less bottle of beer on the wall,, " | espeak -v english -s 140
0043 $ ps hax -o user | sort | uniq -c
0041 $ unset HISTFILEjk
0039 $ echo {001..100}
0035 $ apropos . | shuf -n 1 | awk '{print$1}' | xargs man
0034 # asciiview dummy.png
0031 $ netstat -a | less
0025 $ man hier
0022 $ mpg123 -zvC /home/user/music/*
0021 $ man -t man | ps2pdf - man.pdf
0016 $ getconf LONG_BIT
0015 $ history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
0014 $ mount | column -t
0013 $ python -m SimpleHTTPServer
0010 $ curl rate.sx
0009 $ curl wttr.in/Wasserkuppe?lang=de
0008 $ curl wttr.in/:help

01 SOURCES

SHELL
Die.net             $ w3m https://www.die.net
Pure Bash Bible     $ w3m https://github.com/dylanaraps/pure-bash-bible
Commandlinefu.com   $ w3m https://www.commandlinefu.com
DEBIAN
Debian Handbook     # apt-get install debian-handbook
DistroWatch         $ w3m https://distrowatch.com/table.php?distribution=debian

02 DOCUMENTATION

# apt-get install debian-reference-en
# apt-get install debian-handbook

03 INSTALLATION

$ apt-cache show vlc | less
# apt-get install hwinfo espeak gkrellm powertop aview guake vim taskwarrior mc sudo vym backintime-qt4
# apt-get update && apt-get upgrade && apt-get dist-upgrade

04 SYSTEM MANAGEMENT

# init 0
# shutdown -r now
# shutdown -c
# shutdown -h 1:00
$ cat /etc/shells
$ lsb_release -a
$ w3m https://www.kernel.org
$ w3m https://distrowatch.com/table.php?distribution=debian
$ w3m https://www.debian.org -dump | less
$ uptime
$ uname -v
MONITORING
$ w3m https://www.zabbix.com
# tail -f /var/log/messages
# less +F /var/log/messages
# htop
# atop
$ free -h
CONFIGURATION
$ . ~/.bashrc

05 HARDWARE MANAGEMENT

# hwinfo --short | less
# hwinfo --disk
# lshw -short | less
# raspi-config
$ w3m https://www.raspberrypi.org/documentation

06 FILE MANAGEMENT

# find /home -user userxyz -size +1G
# find /home -user userxyz -mtime -3
$ find . -name "*.jpg" -exec convert {} -scale 50% +repage {} \;
# find / -user userxyz -type f -exec rm -f {} \;
$ for x in *; do mv "$x" "${x,,}"; done
# chown userXYZ file.txt
$ df -h
$ du -b --max-depth 1 | sort -nr | perl -pe 's{([0-9]+)}{sprintf "%.1f%s", $1>=2**30? ($1/2**30, "G"): $1>=2**20? ($1/2**20, "M"): $1>=2**10? ($1/2**10, "K"): ($1, "")}e'
BACKUP
$ tar -cvzf ~/backup/backup.tar.gz ~/java
$ tar -tvf backup.tar.gz 
# dd if=/dev/sdABC of=/dev/sdXYZ bs=64K conv=noerror,sync

07 USER MANAGEMENT

$ id

08 NETWORK MANAGEMENT

# netstat -tulpn
# nmap --iflist
# ifconfig -a | grep -Po '\b(?!255)(?:\d{1,3}\.){3}(?!255)\d{1,3}\b' | xargs nmap -A -p0-
$ w3m https://linux.die.net/Intro-Linux/chap_10.html
$ w3m myip.is
$ ssh -X [email protected]
# vim /etc/ssh/ssh_config
$ mtr --curses google.com
$ curl ifconfig.me
# vim /etc/hosts

09 VIM

$ w3m https://linux.die.net/man/1/vim
$ vimtutor
$ vim Main.java
$ export EDITOR=vim
$ Strg-x e

10 TASKWARRIOR

INSTALLATION & CONFIGURATION
$ w3m https://linux.die.net/man/1/task
$ apt-cache search taskwarrior
$ apt-cache show taskwarrior
# apt-get install taskwarrior
$ vim ~.taskrc

BASIC TASK MANAGEMENT
$ task
$ task add Task1
$ task add Task2
$ task
$ task 1 modify priority:H
$ task 1 modify due:eow
$ task 1 start
$ task 1 stop
$ task 1 information
$ task
$ task 1 done
$ task 2 delete
$ task
$ task burndown
$ alias t='clear; task'
$ alias t1='clear; task burndown.daily'

DOCUMENTATION
$ man task
$ w3m https://taskwarrior.org
$ w3m https://taskwarrior.org/docs
$ w3m https://taskwarrior.org/docs/30second.html
$ w3m https://linux.die.net/man/1/task