LINUX • DEBIAN • BASH • JAVA - CHEAT SHEET v19-02-23 Update

LINUX • DEBIAN • BASH • JAVA - CHEAT SHEET
A short summary of my personal favorite Linux tools.

Image source: Willi Glenz - Screenshot Desktop

# visudo
$ gnome-characters
$ mpg123 -zvC /home/userxyz/music/*
# tasksel
# tasksel --list-tasks
# service --status-all | less
# service ssh status
# service apache2 start | restart | stop
# apt-get install printer-driver-cups
# ufw status

TOOL	HOMEPAGE	DOWNLOAD	DOCUMENTATION	TUTORIAL
linux	home	kernel	docu	javatpoint.com
debian	home	smallcd	docu	debiantutorials.com
gnome	home	download	docu	gnome.org

update	visudo taskwarrior primitive data types taskwarrior eclipse ssh perl tiddlywiki shortcuts vim crontab tripwire sources permaculture screen java r monitoring cups alias network check scp debian lfs virtualbox python awk html this week • visudo taskwarrior cherrytree primitive data types eclipse last week • ssh perl taskwarrior tiddlywiki shortcuts vim eclipse crontab tripwire
task	$ task burndown.daily; task burndown.weekly; task burndown.monthly $ task add project:Running Kissinger Runde; timew running start taskwarrior
cherrytree	homepage documentation
java	primitive data types java
eclipse	^F11 alt + F11 ^m eclipse
networking	H • hostname netstat ifconfig ip iwconfig N • mtr ping traceroute nslookup ssh scp
programming	perl r python awk html javac txt2regex netbeans intellij-idea spyder3 drjava bluefish
gnu core utilities	basic operations • cp dd install mv rm shred output • cat tac nl od base32 bas64 head tail split csplit formatting • fmt pr fold summarizing • wc sum cksum b2sum md5sum sh1sum sha224sum sha225sum sort • sort shuf uniq comm ptx tsort fields • cut paste join characters • tr expand unexpand directories • ls dir vdir dircolors special file types • link ln mkdir mkfifo mknod readlink rmdir unlink attributes • chown chgrp chmod touch disk usage • df du stat sync truncate printing • echo printf yes conditions • false true test expr redirection • tee file name manipulation • basename dirname pathchk mktemp realpath working context • pwd stty printenv tty user information • id logname whoami groups users who system context • date arch nproc uname hostname hostid uptime sellinux context • chcon runcon modified command invocation • chroot nv nice nohub stdbuf timeout process control • kill delaying • sleep numeric operations • factor numfmt seq fhs coreutils $ info coreutils
terminal	tilda guake tmux terminator gnome-terminal gedit gvim mcedit nano • history shortcuts screen alias one-liner bash fish
vim	macro qa :reg a @a mark m1 '1 `1 vim
crontab	# crontab -e # service cron status crontab
tripwire	# tripwire --init # tripwire --check --verbose tripwire
rsync	$ rsync -avzP --delete --stats --exclude ’Backup*‘ /home/user/ /media/xyz $ rsync -avzP --delete --stats --exclude-from '/home/user/exclude.txt' /home/user/ /media/xyz
documentation	sources man info pinfo apropos whatis help history
monitoring	conky kismet bleachbit nagios zabbix cacti ganglia opennms chkrootkit
configuration	language swapon gnome-tweak-tool bashrc
gui-apps	libreoffice localc lowriter lobase lodraw loimpress lomath loweb gnome-todo
printing	cups • lpstat lpq lp lpr cancel • lpadmin lpmove lpc tunelp accept reject enable disable
hardware	raspi raspi-config rpi-update • gnome-disks badblocks blkid fdisk • lsblk lshw lspci lsusb • hwinfo e4defrag administration
os	debian lfs arch • virtualbox tasksel administration
backup	backintime timeshift • grsync rsync
user	U • adduser useradd • deluser userdel • addgroup groupadd • usermod chage chfn finger whatis which w whoami passwd id G • delgroup groupdel groups newgrp administration
multimedia	vlc youtube-dl simplescreenrecorder
processes	kill killall • htop atop top • jobs bg fg administration
server	dhcp pi-hole raspiblitz
A	apt-get alacarte apt apt-cache apt-config apt-key apt-cdrom archivemount asunder
B	basket bc
C	curl cal cherrytree clear clipit cmatrix cut
D	df dmesg dpkg
E	eog exit
F	finger for free fuser
G	git glances gnome-clocks gnome-disks gparted groupmod grsync grub-mkconfig
H	hostname hostnamectl
L	lxc lastlog locate lsb_release lvm
M	man menulibre mc more mount
N	nl nano ncal netatop netstat nmap
O	open
P	perldoc pinfo popd pushd pwgen
R	R
S	script scp sed service set sftp shellcheck steghide stat sudo su sync visudo
T	tiddlywiki thunderbird tune2fs
U	ufw umask uniq update-alternatives updatedb uptime users
V	visudo veracrypt vimtutor
W	watch w3m
X	xdotool xsel

~/.bash_history

• alias t='clear; task; timew week; timew'
# chown userXYZ file.txt
$ cmatrix -s -u 9
$ curl rate.sx/steem@90d
$ dd if=/dev/cdrom of=/tmp/isofile.iso
$ df -hT
$ for x in *; do mv "$x" "${x,,}"; done
$ hostname; hostname -d; hostname -f; hostname -i
$ java -jar filename.jar
$ sort -t: -k1 -n /etc/passwd
$ speedtest
$ ssh -X [email protected]
$ stat /home/user
$ timew start | stop | continue
$ tree ~/Downloads
$ type date; type echo
$ umask -S
$ ls -l | xsel --clipboard
$ ^z jobs fg bg

BACKUP
$ archivemount archive.tar.gz ~/mnt/
# dd if=/dev/sdABC of=/dev/sdXYZ bs=64K conv=noerror,sync
$ tar -cvzf ~/backup/backup.tar.gz ~/java
$ tar -tvf backup.tar.gz
$ ssh [email protected] "tar -zcf - /home/user/scripte" > scripte.tar.gz

CRONTAB
# crontab -e

DU
# du -hs / 2> /dev/null
$ du -h --max-depth=1 | sort -rh
$ 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'

FIND
$ find -size +100M | less
# find /home -user userxyz -size +1G
$ find . -name "*.jpg" -exec convert {} -scale 50% +repage {} \;
$ find ~ -maxdepth 1 -type f -exec grep "^alias " '{}' \; -print
$ find ~ -maxdepth 1 -type f -mtime 3
$ find ~ -maxdepth 1 -type f -exec grep "^alias " '{}' \; -print
# find / -uid 1000 -exec chown -v 1002:1002 {} \;
# find / -user userxyz -type f -exec rm -f {} \;
$ find /etc -type f -print 2> /dev/null | less
$ find /etc/*tab -type f -print
# find /home -user userxyz -mtime -3

MAIL
# apt-get install mailutils-doc; info mailutils
$ mail
$ from

MANPAGES
$ man hier
$ man ascii

MONITORING
$ watch -d -n 5 ls -l

MD5SUM
$ md5sum abc.txt
$ md5sum abc.txt > abc.md5
$ md5sum -c abc.md5

PACKAGES
$ apt list --installed | less
$ apt list --installed | grep vim
$ apt list --installed | wc -l
$ dpkg -L vim-doc

SERVICES
# tasksel
# tasksel --list-tasks
# service --status-all | less
# service ssh status
# service cron status
# service apache2 start | restart | stop
# apt-get install printer-driver-cups
# ufw status

SUDO
# visudo 
> Defaults:userxyz timestamp_timeout=30

TASKWARRIOR & TIMEWARRIOR
$ task calendar 2019
# task 1 edit
$ timew start | stop | continue