ubuntu

ubuntu.md

Setup

Saving settings before Reinstalling Ubuntu

dconf has its own mechanism to dump the configuration with the command dconf dump /.

• better: before making changes in keyboard settings, start monitoring with dconf watch /, note changes and load them later

Remapping Alt & Control

• write to ~/.Xmodmap

clear control
clear mod1
keycode 37 = Alt_L Meta_L
keycode 64 = Control_L
add control = Control_L Control_R
add mod1 = Alt_L Meta_L

• load these settings with xmodmap .Xmodmap

Remapping standard Hotkeys, e.g. Minimize

/org/gnome/desktop/wm/keybindings/minimize
  ['<Primary>e']

/org/gnome/desktop/wm/keybindings/close
  ['<Primary>q']

/org/gnome/desktop/wm/keybindings/maximize
  ['<Primary><Shift>e']

/org/gnome/settings-daemon/plugins/media-keys/screensaver
  '<Super>l'

/org/gnome/settings-daemon/plugins/media-keys/area-screenshot
  '<Primary><Shift>dollar'

/org/gnome/settings-daemon/plugins/media-keys/home
  '<Super>f'

/org/gnome/desktop/wm/keybindings/switch-input-source
  ['']

/org/gnome/settings-daemon/plugins/media-keys/search
  '<Super>space'

/org/compiz/integrated/show-hud
  ['']

# change icon size in task bar

/org/compiz/profiles/unity/plugins/unityshell/icon-size
  32

/org/compiz/profiles/unity/plugins/expo/y-bottom-offset
  48

Remapping Alt Tab to Control Tab

dconf write /org/compiz/profiles/unity/plugins/unityshell/alt-tab-forward "'<Control>Tab'"

Network: Shared Folders

Get all available Domains in Network

• run smbtree after installing it
• it returns something like

WORKGROUP
	\\WDFN30007029A  		Samba 4.2.4-40.1-3678-SUSE-oS13.2-x86_64
		\\WDFN30007029A\IPC$           	IPC Service (Samba 4.2.4-40.1-3678-SUSE-oS13.2-x86_64)
		\\WDFN30007029A\home           	
	\\LU654656       		lu654656 server (Samba, Ubuntu)
		\\LU654656\PDF            	PDF
		\\LU654656\IPC$           	IPC Service (lu654656 server (Samba, Ubuntu))
		\\LU654656\print$         	Printer Drivers

Specific: Get IPs for mounted folders

• if connected folders in root, then cd / and df will output something like:

/dev/sda1                                              504740   107973    396767  22% /boot
[email protected]:/home/d066124/Desktop/sles 851853796  5080372 803478704   1% /home/d066124/mnt/ubuntu
10.68.90.187:/area51/makes                           67108864 41069568  26039296  62% /area51/makes

• in this case, area51 can be accessed via 10.68.90.187

Mount server with its IP and smbclient

• after having acquired the IP, use dnslookup to get domain or IP of a host via DNS: nslookup 10.68.90.187

Server:		10.17.122.10
Address:	10.17.122.10#53

187.90.68.10.in-addr.arpa	name = ld9664-nfs.wdf.sap.corp.
187.90.68.10.in-addr.arpa	name = area51.wdf.sap.corp.

• install smb and smbclient - both necessary for sharing and accessing shared folders/files in a network

Etc

Unity and Compiz

• both are preinstalled on Ubuntu 16
• Compiz settings overwrite Unity settings
  • therefore it's not possible to remap AltTab (application-switcher) in general System Settings

Change Compiz settings with CCSM

• in order to change specific keys, the Compiz config has to be changed
• if the paths to the config settings are known, then the settings can be changed with dconf write
• otherwise use compizconfig-settings-manager (CCSM)
  • for replacing original AltTab behaviour search in CCSM for Ubuntu Unity Plugin
  • go to switcher
  • edit Key to start the Switcher, e.g. to Ctrl Tab

Monitor changes written to System Settings

• dconf watch / monitors all changes made to system files in root directory / and results in

/org/compiz/profiles/unity/plugins/unityshell/alt-tab-forward
  '<Control>Tab'

Overwrite System Settings with dconf

• example problem: remapping alt tab of compiz:

dconf write /org/compiz/profiles/unity/plugins/unityshell/alt-tab-forward "'<Control>Tab'"

• it's "'<Control>Tab'" and not "'[<Control>Tab]'" !