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Wiki source code of Linux User Consoles How-Tos

Version 20.1 by loktevda on 2025-10-30 10:36
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1 {{toc/}}
2
3
4 **Current Operating System: Ubuntu 24.04 LTS **
5
6 This guide provides essential how-to instructions for Ubuntu 24.04 LTS users working with the Linux console FSFL.
7
8 == Access Information ==
9
10 **Need login credentials functional accounts or support?**
11
12 * **Email:** [[darya.loktev@desy.de>>mailto:darya.loktev@desy.de]]
13 * **In-person support:** Come to room 02.015
14
15 == Shared Desktop Environment ==
16
17 **The Desktop will be shared** - please use Desktop shared folders for file storage and collaboration.
18
19
20 In case the Gnome graphic user interface is frozen, restart the X server by pressing the following 4 keys simultaneously: Ctr, Alt, SysReq, K. or Wndows taskbar
21
22
23 \\
24
25 == Application Access Changes ==
26
27 **Application access has changed:** Applications are no longer accessed via Desktop icons. Instead, applications are now accessed through **Dashboard pins**.
28 Look for the Dashboard left (Activities overview) to find and launch your applications.
29 [[image:Screenshot from 2025-05-06 13-10-38.png||height="368" width="600"]]
30
31 == Paths of the mounts ==
32
33 Since the path's are not in the fstab anymore, one have to know the paths which are:
34
35 FLASH Core-FS:
36
37 **/asap3/flash/gpfs**
38
39 FLASH-O Core-FS:
40
41 **/asap3/fs-flash-o/gpfs**
42
43 pnfs:
44
45 **/pnfs/desy.de/flash1**
46
47
48 == How to take screenshots ==
49
50 Ubuntu 24 provides several convenient keyboard shortcuts for capturing screenshots:
51
52 === Keyboard Shortcuts ===
53
54 {{{
55 }}}
56
57 |=Shortcut|=Action
58 |PrtScn or FN +PrtScn|Capture entire desktop
59 |Alt + PrtScn|Capture active window only
60 |Shift + PrtScn|Capture selected area
61 |Ctrl + PrtScn|Copy screenshot to clipboard
62
63 === How to Use Area Selection ===
64
65 1. Press Shift + PrtScn
66 1. Your cursor changes to a crosshair
67 1. Click and drag to select the area you want to capture
68 1. Release to take the screenshot
69
70 [[image:attach:Screenshot from 2020-01-22 10-16-28.png||height="250"]]
71
72 Easy to take screenshots of the full Desktop, only the active window or just an area. In area mode your cursor turns into a crosshair and you have to mark the area you want to take a screen of.
73
74 In the above picture i used alt+print, for the following i used shift+print, so you see its just an area:
75
76 [[image:attach:Screenshot from 2020-01-22 10-16-02.png||height="250"]]
77
78
79 == How to change colors in terminal ==
80
81 In the Terminal click on "Edit" → "Preferences". A new window opens and there you click on the tab "Profiles". After this click on "Edit" to change the used profile:
82
83 [[image:attach:Screenshot from 2020-01-22 10-18-49.png||height="250"]]
84
85 In the tab "Colors" you can change the colors from system themed to your own favorite:
86
87 [[image:attach:Screenshot from 2020-01-22 10-19-13.png||height="250"]]
88
89 In my case on my computer i use green text and black background with a much more colored stuff [[image:http://confluence.desy.de/s/en_US/7901/4635873c8e185dc5df37b4e2487dfbef570b5e2c/_/images/icons/emoticons/smile.svg||border="0" title="(smile)" class="emoticon emoticon-smile"]]
90
91 [[image:attach:Screenshot from 2020-01-24 09-06-40.png||height="112"]]
92
93 (One can edit some coloring-the-terminal stuff in the .bashrc, too! But this isn't the topic in here [[image:http://confluence.desy.de/s/en_US/7901/4635873c8e185dc5df37b4e2487dfbef570b5e2c/_/images/icons/emoticons/smile.svg||border="0" title="(smile)" class="emoticon emoticon-smile"]])
94
95
96 == How to run the Shell as a login shell ==
97
98 In the editing Profile Windows (see picture above) click on the Tab "Command" and check the "Run command as a login shell":
99
100 [[image:attach:Screenshot from 2020-01-22 10-19-44.png||height="250"]]
101
102 To see if you are running with or without login you can use the command "echo $0":
103
104 [[image:attach:Screenshot from 2020-01-22 10-20-29.png]]
105
106 The "-" implicates that it is a login shell. At example you need the login shell to use all your own variables. If you just change user etc. without it, it may happen that - at example - you don't have permissions to geht dconf work because of some variables still got owned by the previous user.
107
108
109 == Additional Tips ==
110
111 ==== Terminal Best Practices ====
112
113 * Use Ctrl + C to cancel running commands
114 * Use Ctrl + Z to suspend processes (resume with fg)
115 * Use history to view command history
116 * Use Tab for auto-completion
117
118 ==== File System Navigation ====
119
120 * Use pwd to show current directory
121 * Use ls -la for detailed file listings
122 * Use cd - to return to previous directory
123
124 ==== Getting Help ====
125
126 * Use man <command> for manual pages
127 * Use <command> ~-~-help for quick help
128 * Use apropos <keyword> to find related commands
129
130