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--- en:linux:start [2022/12/29 14:15] – [smartctl / hdparm] frank
+++ en:linux:start [2024/04/07 19:40] (current) – [LVM] frank
@@ Line 85: / Line 85: @@
   ps -o pid,args -C tcpdump
+===== ls =====
+full timestamps:
+  ls -l --time-style="+%Y-%m-%d %H:%M"
+deactivate colors:
+  ls -l --color=none
+===== bashrc / alias =====
+  alias cp="rsync -av --partial --progress"
+  alias pynano="nano -ET4"
+  alias catconf='find . -type f -exec grep -Iq . {} \; -printf "\n\n%p:\n" -exec cat {} \;'
 ===== nano =====
@@ Line 120: / Line 135: @@
   sudo badblocks -nsv /dev/sdb
+http://www.das-werkstatt.com/forum/werkstatt/viewtopic.php?t=2346
 ====== NTP ======
@@ Line 125: / Line 141: @@
   #nano /etc/ntp.conf # need restart after change
   service ntp status
+  #show state of servers
+  ntpq -p
 manual update:
@@ Line 162: / Line 180: @@
   gunzip -c bpi-r3_sdmmc_bullseye.img.gz | sudo dd bs=1M status=progress conv=notrunc,fsync of=/dev/sdX
+====== tar ======
+  tar -xzf file.tar.gz --strip-components 1 -C DESTINATION
+====== sed ======
+extract text between patterns:
+https://stackoverflow.com/questions/38972736/how-to-print-lines-between-two-patterns-inclusive-or-exclusive-in-sed-awk-or
+example (extract frequencies from iw command):
+  iw list | sed -n '/Frequencies/,/Band\|Supported commands/{/Band\|Supported commands/!p;}'
 ====== irssi ======
@@ Line 230: / Line 262: @@
 SUBSYSTEM=="tty", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", ATTRS{serial}=="0001", SYMLINK+="tty_r2"
 </code>
+this udev rules i use for ftdi 4xuart adapter (FT4232H Quad RS232-HS)
+<code>
+SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", ENV{ID_USB_INTERFACE_NUM}=="00", SYMLINK+="ftdi_r2"
+SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", ENV{ID_USB_INTERFACE_NUM}=="01", SYMLINK+="ftdi_r64"
+SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", ENV{ID_USB_INTERFACE_NUM}=="02", SYMLINK+="ftdi_r3"
+SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", ENV{ID_USB_INTERFACE_NUM}=="03", SYMLINK+="ftdi_r4"
+</code>
+easier way to get the main-properties of a device
+  udevadm info /dev/sdb1
 ====== sshd ======
 ===== qnap (entware) =====
@@ Line 362: / Line 406: @@
 Solution using /etc/default/locale was not working for me
+===== LVM =====
+https://wiki.debian.org/LVM#Create_a_PV
+prepared initrd
+<code>
+  apt install initramfs-tools
+  kernelversion=$(uname -r)
+  echo $kernelversion
+  zcat /proc/config.gz > /boot/config-$kernelversion
+  less /boot/config-$kernelversion
+  update-initramfs -k $kernelversion -c
+</code>
+<code>
+root@bpi-r3-mini:~# apt install lvm2
+root@bpi-r3-mini:~# fdisk /dev/nvme0n1
+#changed type of partition 3 to lvm
+root@bpi-r3-mini:~# pvcreate /dev/nvme0n1p3
+root@bpi-r3-mini:~# vgcreate vg-nvme /dev/nvme0n1p3
+  Volume group "vg-nvme" successfully created
+root@bpi-r3-mini:~# vgdisplay
+  --- Volume group ---
+  VG Name               vg-nvme
+  System ID
+  Format                lvm2
+  Metadata Areas        1
+  Metadata Sequence No  1
+  VG Access             read/write
+  VG Status             resizable
+  MAX LV                0
+  Cur LV                0
+  Open LV               0
+  Max PV                0
+  Cur PV                1
+  Act PV                1
+  VG Size               80.74 GiB
+  PE Size               4.00 MiB
+  Total PE              20670
+  Alloc PE / Size       0 / 0
+  Free  PE / Size       20670 / 80.74 GiB
+  VG UUID               w22Wdx-Fhch-YNsA-roWh-Zq81-qv0R-d5fnvw
+root@bpi-r3-mini:~# lvcreate -n var -L 10g vg-nvme
+  Logical volume "var" created.
+root@bpi-r3-mini:~# mkfs -t ext4 /dev/vg-nvme/var
+root@bpi-r3-mini:~# mount /dev/mapper/vg--nvme-var /var_lvm
+[ 5279.856899] EXT4-fs (dm-0): mounted filesystem 520d434d-fdfc-48f3-823d-77e602
+e84e7 r/w with ordered data mode. Quota mode: disabled.
+root@bpi-r3-mini:~#
+</code>