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Wiki source code of Linux User Consoles How-Tos

Version 15.1 by loktevda on 2025/09/09 10:24
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1 {{toc numbered="true"/}}
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 == Application Access Changes ==
20
21 **Application access has changed:** Applications are no longer accessed via Desktop icons. Instead, applications are now accessed through **Dashboard pins**.
22 Look for the Dashboard left (Activities overview) to find and launch your applications.
23 [[image:Screenshot from 2025-05-06 13-10-38.png||height="368" width="600"]]
24
25 ==
26 Paths of the mounts ==
27
28 Since the path's are not in the fstab anymore, one have to know the paths which are:
29
30 FLASH Core-FS:
31
32 **/asap3/flash/gpfs**
33
34 FLASH-O Core-FS:
35
36 **/asap3/fs-flash-o/gpfs**
37
38 pnfs:
39
40 **/pnfs/desy.de/flash1**
41
42
43 == How to take screenshots ==
44
45 Ubuntu 24 provides several convenient keyboard shortcuts for capturing screenshots:
46
47 === Keyboard Shortcuts ===
48
49 {{{
50 }}}
51
52 |=Shortcut|=Action
53 |PrtScn|Capture entire desktop
54 |Alt + PrtScn|Capture active window only
55 |Shift + PrtScn|Capture selected area
56 |Ctrl + PrtScn|Copy screenshot to clipboard
57
58 === How to Use Area Selection ===
59
60 1. Press Shift + PrtScn
61 1. Your cursor changes to a crosshair
62 1. Click and drag to select the area you want to capture
63 1. Release to take the screenshot
64
65 [[image:attach:Screenshot from 2020-01-22 10-16-28.png||height="250"]]
66
67 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.
68
69 In the above picture i used alt+print, for the following i used shift+print, so you see its just an area:
70
71 [[image:attach:Screenshot from 2020-01-22 10-16-02.png||height="250"]]
72
73
74 == How to change colors in terminal ==
75
76 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:
77
78 [[image:attach:Screenshot from 2020-01-22 10-18-49.png||height="250"]]
79
80 In the tab "Colors" you can change the colors from system themed to your own favorite:
81
82 [[image:attach:Screenshot from 2020-01-22 10-19-13.png||height="250"]]
83
84 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"]]
85
86 [[image:attach:Screenshot from 2020-01-24 09-06-40.png||height="112"]]
87
88 (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"]])
89
90
91 == How to run the Shell as a login shell ==
92
93 In the editing Profile Windows (see picture above) click on the Tab "Command" and check the "Run command as a login shell":
94
95 [[image:attach:Screenshot from 2020-01-22 10-19-44.png||height="250"]]
96
97 To see if you are running with or without login you can use the command "echo $0":
98
99 [[image:attach:Screenshot from 2020-01-22 10-20-29.png]]
100
101 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.
102
103
104 == Additional Tips ==
105
106 ==== Terminal Best Practices ====
107
108 * Use Ctrl + C to cancel running commands
109 * Use Ctrl + Z to suspend processes (resume with fg)
110 * Use history to view command history
111 * Use Tab for auto-completion
112
113 ==== File System Navigation ====
114
115 * Use pwd to show current directory
116 * Use ls -la for detailed file listings
117 * Use cd - to return to previous directory
118
119 ==== Getting Help ====
120
121 * Use man <command> for manual pages
122 * Use <command> ~-~-help for quick help
123 * Use apropos <keyword> to find related commands
124
125