Tools of Linux to learn

helper sites:
www.howtogeek.com
www.nixcraft.com
and of course stackoverflow 

-- help # switch
-- |grep # grep pipe

ls --help |grep recursive

cd
cd ~  # home path
ls
ls -lah
cat
> operator
< operator
| operator
grep
less
watch 
watch -n 1 "command"
tail
tail -f
clear
echo

rm  # careful
sudo rm -rf foldername # very careful :) deletes everything in that folder


sudo
sudo -i
apt-get  # install remove purge --no-install-recommends -y 
gparted
gdebi
synaptic
aptitude

ssh
ssh -Y 
sshfs

/etc/rc.local
/etc/default/grub
update-grub
nano
gedit
/etc/apt/sources.list

adduser
deluser
passwd
chgrp
chown
chmod

lsmod
modprobe
rmmod

lspci
lspci -nnk
lspci -nnkvv

lsblk

hdparm
iotop
htop
lmsensors

gzip
gunzip
tar
pigz
zip
rsync

dd # !!! very very careful

parted
fdisk
gdisk
sgdisk
mount
umount
du 
dh
file
/etc/fstab

ps
ps -ef
ps -A 
lsof  # which process uses a file or library or soemthing


cksum
md5sum
sha256sum
md5deep
find
diff

netstat -n
tcpdump
ifconfig 
ifconfig -a
ifconfig eth1 down
route
/etc/resolv.conf
dig
nslookup
dhclient #auto internet config
/etc/netplan/
sysctl 
ping 
nmap
wget
curl
ip
ip neigh
ip addr
wondershaper
trickle


xrandr
webmin 

date
time 

history




 
! some of them works only with sudo