Haack's Wiki

User Tools

Site Tools

Trace:
computing:gnulinux

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
computing:gnulinux [2018/05/18 07:56] – oemb1905computing:gnulinux [2018/05/18 08:05] (current) – removed oemb1905
Line 1: Line 1:
-------------------------------------------- 
-  * **gnulinux**  
-  * **Jonathan Haack** 
-  * **Haack's Networking** 
-  * **netcmnd@jonathanhaack.com**  
  
-------------------------------------------- 
- 
-//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.// 
- 
- 
-------------------------------------------- 
-#**optical media ripping from command line** 
-------------------------------------------- 
- 
-  cdrecord -pad -dao -data blag-140k-i686.iso 
- 
- 
- 
- 
- 
-------------------------------------------- 
-#**security & policy information** 
-------------------------------------------- 
- 
-  sudo nano /etc/pam.d/common-password 
- 
-Prevent Log in - create file 
- 
-  /etc/nologin 
- 
- 
-------------------------------------------- 
-#**display managers; lightdm & gdm3** 
-------------------------------------------- 
- 
-  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 
- 
- 
-------------------------------------------- 
-#**miscellaneous sysadmin easy** 
-------------------------------------------- 
- 
-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"  
-  
- 
-------------------------------------------- 
-#**scripts and miscellaneous** 
-------------------------------------------- 
- 
-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  
-   
- 
- 
- 
- 
-------------------------------------------- 
-#**Building From Source to Custom library Location** 
-------------------------------------------- 
- 
-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 
- 
-------------------------------------------- 
-#**virt-manager stuff** 
-------------------------------------------- 
-Start defualt   
-  sudo virsh net-start default  
- 
-Remove bridge 
-  sudo ifconfig virbr0 dow 
-  sudo brctl delbr virbr0 
- 
-List all 
-  sudo virsh net-list --all  
- 
- 
-------------------------------------------- 
-#**Simple Bridge Mode Virt-Manager** 
-------------------------------------------- 
-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 
- 
- 
- 
-------------------------------------------- 
-#**smart tests** 
-------------------------------------------- 
-  smartctl -t short 
-  smartctl -t long 
- 
-------------------------------------------- 
-#**ssh with screen** 
-------------------------------------------- 
-  ssh -t xx.xx.xx.xx screen -DRO 
- 
- 
-------------------------------------------- 
-#**RAID 1 Notes** 
-------------------------------------------- 
-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 
- 
- 
-------------------------------------------- 
-#**Level 3 DNS & resolv.conf** 
-------------------------------------------- 
- 
-  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 
-   
- 
-------------------------------------------- 
-#**next topic** 
-------------------------------------------- 
- 
- 
- 
- --- //[[netcmnd@jonathanhaack.com|oemb1905]] 2018/03/15 00:23// 
computing/gnulinux.1526630163.txt.gz · Last modified: (external edit)

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: GNU Free Documentation License 1.3
GNU Free Documentation License 1.3 Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki