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Wiki source code of Linux User Consoles How-Tos

Version 13.2 by loktevda on 2025/09/08 14:57
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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**. Look for the Dashboard (Activities overview) to find and launch your applications.
22
23 ==
24 Paths of the mounts ==
25
26 Since the path's are not in the fstab anymore, one have to know the paths which are:
27
28 FLASH Core-FS:
29
30 **/asap3/flash/gpfs**
31
32 FLASH-O Core-FS:
33
34 **/asap3/fs-flash-o/gpfs**
35
36 pnfs:
37
38 **/pnfs/desy.de/flash1**
39
40
41 == How to take screenshots ==
42
43 Ubuntu 24 provides several convenient keyboard shortcuts for capturing screenshots:
44
45 === Keyboard Shortcuts ===
46
47 {{{
48 }}}
49
50 |=Shortcut|=Action
51 |PrtScn|Capture entire desktop
52 |Alt + PrtScn|Capture active window only
53 |Shift + PrtScn|Capture selected area
54 |Ctrl + PrtScn|Copy screenshot to clipboard
55
56 === How to Use Area Selection ===
57
58 1. Press Shift + PrtScn
59 1. Your cursor changes to a crosshair
60 1. Click and drag to select the area you want to capture
61 1. Release to take the screenshot
62
63 [[image:attach:Screenshot from 2020-01-22 10-16-28.png||height="250"]]
64
65 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.
66
67 In the above picture i used alt+print, for the following i used shift+print, so you see its just an area:
68
69 [[image:attach:Screenshot from 2020-01-22 10-16-02.png||height="250"]]
70
71
72 == How to change colors in terminal ==
73
74 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:
75
76 [[image:attach:Screenshot from 2020-01-22 10-18-49.png||height="250"]]
77
78 In the tab "Colors" you can change the colors from system themed to your own favorite:
79
80 [[image:attach:Screenshot from 2020-01-22 10-19-13.png||height="250"]]
81
82 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"]]
83
84 [[image:attach:Screenshot from 2020-01-24 09-06-40.png||height="112"]]
85
86 (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"]])
87
88
89 == How to run the Shell as a login shell ==
90
91 In the editing Profile Windows (see picture above) click on the Tab "Command" and check the "Run command as a login shell":
92
93 [[image:attach:Screenshot from 2020-01-22 10-19-44.png||height="250"]]
94
95 To see if you are running with or without login you can use the command "echo $0":
96
97 [[image:attach:Screenshot from 2020-01-22 10-20-29.png]]
98
99 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.
100
101
102 == Additional Tips ==
103
104 === Terminal Best Practices ===
105
106 * Use Ctrl + C to cancel running commands
107 * Use Ctrl + Z to suspend processes (resume with fg)
108 * Use history to view command history
109 * Use Tab for auto-completion
110
111 === File System Navigation ===
112
113 * Use pwd to show current directory
114 * Use ls -la for detailed file listings
115 * Use cd - to return to previous directory
116
117 === Getting Help ===
118
119 * Use man <command> for manual pages
120 * Use <command> ~-~-help for quick help
121 * Use apropos <keyword> to find related commands
122
123