Tasks - jasper-zanjani/dotfiles GitHub Wiki

• Set up SSH server on WSL
• Set custom resolution on a VM
• Bash scripting
• Diagnosing network problems
• Distros
• Samba
• X forwarding

Specify a custom resolution in a VM ^{[github.io](https://stafwag.github.io/blog/blog/2018/04/22/high-screen-resolution-on-a-kvm-virtual-machine-with-qxl/ 'stafwag.github.io: "High screen resolution on a KVM virtual machine with QXL")}

cvt 2560 1440
xrandr --newmode "2560x1440_60.00" 312.25 2560 2752 3024 3488  1440 1443 1448 1493 -hsync +vsync
xrandr --addmode Virtual-1 2560x1440_60.00
xrandr --output Virtual-1 --mode 2560x1440_60.0

ssh -Y user@host

Have remote system use local computer {me.luna.edu}'s X display

export DISPLAY=me.luna.edu:0

Install and configure Samba server ^{[vitux.com][https://vitux.com/how-to-install-and-configure-samba-on-ubuntu/]}

Install samba

sudo apt install samba

Verify the samba service smbd is running

sudo systemctl status smbd

Configure Samba

sudo mkdir /samba                   # Create a directory for the share
sudo chmod -R 0777 /samba
sudo chown -R nobody:nobody /samba  # Remove ownership

Open firewall rule

sudo firewall-cmd --permanent --add-service=samba
sudo firewall-cmd --reload

Configure Samba config file at [/etc/samba/smb.conf][/etc/samba/smb.conf]

[samba-share]
comment = Samba on Ubuntu
path = /samba
read only = no
browsable = yes

Set up a Samba account for $USER

sudo smbpasswd -a $USER

Restart Samba service ^{[vitux.com][https://vitux.com/how-to-install-and-configure-samba-on-ubuntu/] tecmint.com}

sudo systemctl restart smbd.service

Install and configure Samba as a client

sudo apt install smbclient 

Access samba share at $SHARE at server $HOST using user credential $USER

sudo smbclient //$HOST/$USER -U $USER

This will display the Samba CLI

smb: \>

Validating arguments ^{[Sobell][Sobell]: 548}

if [ $# != 2 ]
then 
  echo "..."
  exit 1
fi

^YouTube

[ -z "$1" ] && echo "..." && exit 1

^{[coderwall.com][https://coderwall.com/p/kq9ghg/yakuake-scripting]}

if [ ! -z "$2" ] ; then ...; fi

Placed in a while loop, if user responds with anything except "y" (the read command will read only the first letter) the loop will terminate ^{[Cannon][CLKF]}

read -p "Backup another server? (y/n)" -n 1
["$BACKUP_AGAIN"="y"] || break

Test from the inside out, starting with the loopback

1. ping looback address, testing the TCP/IP stack
2. ping the hardware interface
3. ping another host on the network
4. ping the gateway
5. ping an IP address on the Internet
6. ping a hostname on the Internet

Display contents of a random file

ls | sort -R | sed 1q | xargs cat

Find out which commands you use most often

history | awk '{print $2' | sort | uniq -c | sort -rn | head

Count the number of occurrences of a string

| uniq -c | sort -

Change hostname

sudo hostnamectl set-hostname newhostname

Check kernel version ^linuxize.com

uname -srm

hostnamectl | grep "Kernel"

cat /proc/version

Inspect available drives and partitions before/after inserting USB drive

lsblk

Mount ISO (if)to USB drive (of), with progress displayed

dd if=Downloads/archlinux-2018.03.01-x86_64.iso of=/dev/sdba status="progress"

Reboot from the USB drive. If there are values displayed a UEFI system is required and a different installation sequence is needed.

ls /sys/firmware/efi/efivars

Ensure an Ethernet internet connection or wi-fi menu a valid Wi-Fi connection is present

timedatectl set-ntp true

Begin the process of partitioning the disk; enter the fdisk command prompt

fdisk /dev/sdb

Set up ext4 filesystem on boot, root, and home partitions

mkfs.ext4 /dev/sdb1
mkfs.ext4 /dev/sdb3
mkfs.ext4 /dev/sdb4

Make the swap partition a swap drive

mkswap /dev/sdb2
swapon /dev/sdb2

Mount partitions

mount /dev/sdb3 /mnt
mkdir /mnt/home
mkdir /mnt/boot
mount /dev/sdb1 /mnt/boot
mount /dev/sdb4 /mnt/home

Install Arch Linux on the directory provided with the packages base, base-devel (which includes sudo and other development tools), vim

pacstrap /mnt base base-devel vim

Make an fstab file, taking all the drives mounted at that location, going off of UUIDs rather than the sd identifiers (which might change)

genfstab -U /mnt > /mnt/etc/fstab

Change root to new Arch Linux installation

arch-chroot /mnt

Install networkmanager which will allow Ethernet Internet connections upon reboot

pacman -S networkmanager

Tell SystemD to start NetworkManager upon login

systemctl enable NetworkManager

Install GRUB

pacman -S grub

Install GRUB as bootloader

grub-install --target=i386-pc /dev/sdb

Generate GRUB configuration

grub-mkconfig -o /boot/grub/grub.cfg

Set password for root

passwd

Uncomment the two lines referring to US English

vim /etc/locale.gen

Read that file and set locale

locale-gen

Set LANG language variable

echo "LANG=en-US.UTF-8" > /etc/locale.conf

Set timezone by making localtime a link to the correct timezone (this command is all that is required when resetting timezone during travel)

ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime

Write new hostname

echo archizard > /etc/hostname

Return to USB shell

exit

Unmount hard drive for safety

umount -R /mnt

Reboot

reboot

• Install noto-fonts and ttf-linux-libertine ttf-inconsolata
• ~/.config/fontconfig/fonts.conf XML file that defines fonts as serif, monospace, etc

pacman -S xfce4
exec xfce4-session

sudo pacman -S lightdm lightdm-gtk-greeter sudo systemctl enable lightdm.service

• Ctrl+Alt+F2|F3|F4... bring up another TTY
• Alt+LeftArrow|RightArrow navigate to adjacent TTY