Linux/1-Commands

Command	Arguments	Info	Example
Basic
dir	-Flah	list folder content	dir -Flah
cat	%file	show file content	cat config.txt
Files
mkdir	%dir	create dir	mkdir /var/test
rm	%file	remove file/dir	rm autoexec.bat
cp	%from %to	copy
mv	%from %to	move
nano	(%file)	file editor	nano
vi(m)	%file	file editor	vi config.txt
Search
locate	%file	locate file	locate fstab
updatedb		update locate database
find	/ -n %filename	search for file
System info
uname	-a	show kernel version	uname -a
free	-m	show free memory	free -m
fdisk	-l
df	-Th	show harddisk usage	df -Th
du
ip a (ifconfig)		show network settings
ps	-aux	show processes	ps -aux
top		show processes with UI
ss (netstat)			ss -tulpn
landscape-sysinfo			landscape-sysinfo
htop		(extra package)
tload		show cpu graph
iotop		(extra package)
iftop		(extra package)
virt-top		(extra package)
vnstat		show network interface statistics (extra package)
who, w
pwd
Runlevel
runlevel
init	%rlvl
halt
reboot
shutdown	-h now
Network
wget		download files
ntpdate		(extra package)
dig		get dns info
whois		(extra package)
nslookup		get dns info
finger		(extra package)
route	-n	show active routes
traceroute		show network route to target address
ss (netstat)	-tulpn	show open ports	ss -tulpn (t=tcp, u=udp, l=listening, p=process, n=numeric)
iwconfig		show wifi settings
iwlist scan		scan for wifi networks
nethogs		(extra package)
Apt
apt install	<package> (-s = simulation)	install package
apt update		update list of available packages
apt upgrade		upgrade packages
apt dist-upgrade		upgrade all packages incl. kernel
aptitude		package manager with UI
dpkg -c
dpkg --get-selections		get list of all installed packages
dpkg -S filename		find package, to which the file belongs
/etc/apt/sources.list
HDD & Filesystem
dd	if=%in of=%out	low level copy	dd if=/dev/sda2 of=/dev/sdb2
dd		wipe drive	dd if=/dev/urandom of=/dev/sdX bs=4096 status=progress
lsof		show open files	lsof | grep qcow
smartctl		read smart info
hdparm		set parameters
blkid		show block devices UUID
dosfsck	-w -r -l -a -v -t /dev/sdc1	scan fat partition
fsck.ext4	-v -f -c /dev/sda1	scan ext4 partition
shred	-v -n1 -z /dev/sdx	wipe hard drive
Helpers
watch	-n 5 --differences	repeat command every n seconds

• http://linoxide.com/guide/linux-command-shelf.html