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--- computing:gnulinux [2018/05/18 07:53] – oemb1905
+++ computing:gnulinux [2018/05/18 08:05] (current) – removed oemb1905
@@ Line 1: / Line 1: @@
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-  * **gnulinux**
-  * **Jonathan Haack**
-  * **Haack's Networking**
-  * **netcmnd@jonathanhaack.com**
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-//Welcome to my gnulinux wiki page.  Tis page has simple and complex system administrationnotes to remind me when I forget something that I already learned!  If you are visiting, I hope you find the page useful.//
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-#**optical media ripping from command line**
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-  cdrecord -pad -dao -data blag-140k-i686.iso
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-#**security & policy information**
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-  sudo nano /etc/pam.d/common-password
-Prevent Log in - create file
-  /etc/nologin
-tcpdump common uses; monitoring traffic on network
-  tcpdump -n -i <eth0> <host> <x.x.x.x>
-  tcpdump -n -i <eth0> <port> <#>
-  tcpdump -i eth0 -nn -c 10 tcp and host <x.x.x.x>
-  tcpdump -i wlan0 port http or port smtp or port imap or port pop3 -l -A | egrep -e 'pass=|pwd=|log=|login=|user=|username=|pw=|passw=|passwd=|password=|pass:|user:|username:|password:|login:pass |user |Referer:'
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-#**display managers; lightdm & gdm3**
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-  cd /usr/share/lightdm/light.conf.d/
-Global lightdm settings here
-  cd /etc/lightdm/
-  sudo nano lightdm.conf
-Lightdm ubuntu-MATE greeter and lock screen issues
-  /usr/share/common/backgrounds/ubuntu-mate-common/Ubuntu-Mate-Cold.jpg
-  /etc/lightdm/lightdm-gtk-greeter.conf
-The .conf file w/ some common sense parameters
-  [SeatDefaults]
-  allow-guest=false
-  greeter-hide-users=true
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-#**miscellaneous sysadmin easy**
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-start or stop network manager (or other services)
-  systemctl <start/stop/restart> networkmanager.service
-  /etc/init.d/network-manager <start/stop/restart>
-verify dhcp client working for interface eno1
-  dhclient -v eno1
-add subnet to interface eno1
-  ip address add 192.1##.1##.2/24 dev eno1
-interface tool w/ eno1 example
-  ethtool eno1
-interface with switch using screen
-  screen /dev/ttyUSB0/ 19200
-calculate subnet automatically
-  subnetcalc
-proxying web traffic through remote server
-  ssh -D <port#> <user>@<domain.com>
-get block ID of drives
-  blkid
-nmap to scan devices on lan
-  nmap -sP 10.##.##.0/24
-find utils example
-  find . -iname "name"
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-#**scripts and miscellaneous**
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-downloading scripts and executing them; example from DO
-  curl -sSL https://agent.digitalocean.com/install.sh | sh
-ngrok notes; private http(s) tunnels
-  ./ngrok http 80
-  wget https://[ngrok tunnel]/id_rsa.pub
-  cat ~/id_rsa.pub >> ~/.ssh/authorized_keys
-query hosts on the lan
-  avahi-browse -tl _workstation._tcp
-Debian print system configuration to stdout; use root
-  cat /proc/cpuinfo && lspci | grep -i vga && uname -a && lsb_release -a
-  lsb_release -a
-  lspci
-Debian repo management
-  cd /etc/apt
-  nano sources.lsit
-  [main contrib non-free]
-Uploading files to remote webservers with sftp
-  cd ~/Downloads
-  sftp user@host.com:/path/to/sftp/directory/of/choice/
-  > put /path/to/file.txt
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-#**Building From Source to Custom library Location**
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-tar -xf <source_filename>
-Navigate to the directory that tar unarchived the files to.  Then, within that directory, execute:
-  ./configure --prefix=/usr/local
-  make
-  sudo make install clean
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-#**virt-manager stuff**
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-Start defualt
-  sudo virsh net-start default
-Remove bridge
-  sudo ifconfig virbr0 dow
-  sudo brctl delbr virbr0
-List all
-  sudo virsh net-list --all
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-#**rsync**
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-  sudo rsync -avxHAX --progress /sourcefiles/path /backup/path
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-#**Simple Bridge Mode Virt-Manager**
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-create it - use gui, or brctl
-sudo nano /etc/network/interfaces
-  auto br1
-  iface br1 inet dhcp
-     bridge_ports enp3s0
-     bridge_stp on
-     bridge_fd 0.0
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-#**smart tests**
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-  smartctl -t short
-  smartctl -t long
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-#**ssh with screen**
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-  ssh -t xx.xx.xx.xx screen -DRO
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-#**RAID 1 Notes**
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-The sfdisk command is not complete ... the proc shows kernel report on mirroring / syncing status ...
-  sfdisk -d | sfdisk
-  cat /proc/mdstat
-Temperamental Swap mirroring ...
-  mdadm --readwrite /dev/md1
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-#**Purism Keyboard Issue**
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-  sudo nano /etc/rc.local
-Put this in the file.
-  #!/bin/sh
-  setkeycodes 56 43
-  exit 0
-Ctrl-X, Y, Enter.
-  sudo chmod 750 /etc/rc.local
-  sudo chown root:root /etc/rc.local
-  sudo reboot
-Done - problem fixed.
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-#**Level 3 DNS & resolv.conf**
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-  sudo nano /etc/resolv.conf
-  search domain.com [local domain]
-  nameserver xx.xx.xx.xx [router]
-  nameserver 4.2.2.1
-  nameserver 4.2.2.2
-  nameserver 4.2.2.3
-  nameserver 4.2.2.4
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-#**next topic**
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- --- //[[netcmnd@jonathanhaack.com|oemb1905]] 2018/03/15 00:23//

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