Mike Phares a6071a4073 2024-06-03

2024-06-03 07:04:29 -07:00

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type	created	updated
topic	2024-01-29T05:19:01.392Z	2024-04-15T16:14:53.254Z

Ubuntu

Barcode Host

lsb_release -a
sudo -l
timedatectl set-timezone America/Phoenix
find / -name "secrets.json" 2>/dev/null
ls -1 | wc -l
cp -R -u -p /source /destination

cd /home
# directory percent tree
ncdu

adduser syncthing

# Free space
df -h --total
vgdisplay
lvdisplay
lsblk

# mount
mount /dev/sda4 /mnt
umount /dev/sda4
# mount -o remount,uid=1000,gid=1000,rw /dev/sda4
# mount -t ntfs -o nls=utf8,umask=0222 /dev/sda4 /mnt
# mount -t ntfs -o ro /dev/sda4 /mnt
# mkdir /home/mike/1-Images-A
# mount --bind /mnt/1-Images-A /home/mike/1-Images-A
# mount -o remount,rw /home/mike/1-Images-A
# umount /home/mike/1-Images-A
# rm -R /home/mike/1-Images-A
mkfs -t ext4 /dev/sda4
mount /dev/sda4 /mnt
blkid

/dev/sda4: UUID="27753635-40b1-4f21-8f6c-28b1c1997cfb" BLOCK_SIZE="4096" TYPE="ext4" PARTLABEL="Basic data partition" PARTUUID="b920a38c-4682-4c16-9abd-a385fd57b29d"

# https://askubuntu.com/questions/45607/how-to-mount-partition-permanently
nano /etc/fstab

/dev/disk/by-uuid/27753635-40b1-4f21-8f6c-28b1c1997cfb /mnt ext4 defaults 0 2

fdisk -l
lvdisplay
lvm lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
esize2fs -p /dev/mapper/ubuntu--vg-ubuntu--lv

apt-get install lshw
lshw -class disk -class storage
lshw -html > /var/www/html/my-specs.html
nano /var/www/html/my-specs.html
apt-get install smartmontools
smartctl -i /dev/sda
apt-get install hdparm
hdparm -I /dev/sda

Device Model:     256GB SSD
Serial Number:    CM42ABH1005410
LU WWN Device Id: 5 3a5a27 0100c22ca
Firmware Version: SN11842
User Capacity:    256,060,514,304 bytes [256 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      M.2
TRIM Command:     Available, deterministic, zeroed
Device is:        Not in smartctl database 7.3/5319
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon Feb 26 16:48:42 2024 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

# https://stackoverflow.com/questions/338037/how-to-check-permissions-of-a-specific-directory
ls -la
namei -l
getfacl
stat -c "%n %a"

# https://www.cyberciti.biz/faq/how-to-use-sed-to-find-and-replace-text-in-files-in-linux-unix-shell/
sed -i 's/net8.0/net6.0/g' Shared/OI.Metrology.Shared.csproj

# all users
compgen -u
# all groups
compgen -g
usermod -a -G docker mike
groups list mike

# https://stackoverflow.com/questions/49249375/how-to-disable-cloud-init-networking
/etc/cloud/cloud.cfg.d/99-disable-network-config.cfg

network: {config: disabled}

# https://intercom.help/privatevpn/en/articles/6440374-how-to-disable-ipv6-on-ubuntu-and-fedora-linux
nano /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

sysctl -p
cat /proc/sys/net/ipv6/conf/all/disable_ipv6

# https://www.omgubuntu.co.uk/2021/07/enable-minimize-click-ubuntu-dock
gsettings set org.gnome.shell.extensions.dash-to-dock click-action 'minimize'

# View package virtual IP per Peter Kim
mviewcl

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Ubuntu

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