The Databar System at DTU - G-Bar Wiki

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14 The Databar System at DTU Command Brief description ls list contents of a folder less, more, view show contents of a file cd change folder pwd show current folder cp copy files (documents) rm remove documents mv move and rename documents mkdir/rmdir make/delete a subdirectory xpp, lp, lpr print document man, info show manual/info for a command gfile show file type emacs advanced (and good) editor nedit easy to use (graphic) editor vi, vim another advanced editor exit end terminal session Table 2: The most important UNIX commands n-62-14-4(s001234) $ ls -F *tex which produces a list of all files in a folder the names of which end ‘tex’. The parameter ‘-F’ means that you want to see the file type included in the list. Note: Even if UNIX is very flexible with respect to file and folder names, you should avoid using blank spaces, slashes (/) and other special characters in your file and folder names. The most important UNIX commands You can go a long way in command oriented UNIX if you know the commands listed in table 2. These commands are briefly explained in the following. For further information, write the man 〈command〉. Contents of documents and folders The (ASCII) contents of a document can, for example, be shown in a terminal window with the help of the command less followed by the document name, as for example: n-62-14-4(s001234) $ less doc1 If the document fills more than one screen, the command less will show you the first page only. You press the key ‘q’ to leave the less command. There
6 The G-Bar 15 are other, and often better, commands you can use to view the contents of a document – see Table 2. A list with the contents of a folder can be produced on the screen with the command ls. If you want more information than just the names of documents and directories (files and folders), use for example the command ls -l (the parameter -l gives you a more detailed list): n-62-14-4(s001234) $ ls -l If the situation is as sketched in Figure 3 you will get something that looks like the following: drwxr-xr-x 3 s001234 s00 512 Aug 8 13:23 . drwxr-xr-x 3 s001234 s00 512 Aug 8 13:22 .. drwxr-xr-x 2 s001234 s00 512 Aug 8 13:22 bib.no.1 -rw-r--r-- 1 s001234 s00 10 Aug 8 13:13 dok1 -rw-r--r-- 1 s001234 s00 257 Aug 8 13:23 dok2 We are not going into a full explanation of all this data. But it can be said that the first character on the line might be ‘d’ (meaning a folder) or a ‘-’ (meaning a file). The line also refers to information about the read (r) and write (w) access, owner, group, document size, and the date and time at which it was last used. Switch between folders Switching from one folder to another is done with the command cd (change directory), and for example, n-62-14-4(s001234) $ cd dir.no.1 will take you down to the lower folder dir.no.1. The command n-62-14-4(s001234) $ cd .. brings you back up again – Or generally one level up in the tree structure. In the end, the command n-62-14-4(s001234) $ cd will always take you back to the home folder. It is also useful to know what ∼ does. If you use the command n-62-14-4(s001234) $ cd ~s001233 you will change to the user s001233’s home folder. That is possible, if you have an execute right to that folder. If you also want to see contents of that folder, you must have the read access. Note that you can use “/” to start the path down from the root folder (top of the tree), where otherwise the path is relative to the folder you are currently working in. With the help of the command pwd (print working directory), you can always find out which folder you are in.
Page 1 and 2: The Databar System at DTU September
Page 3 and 4: Contents 3 Contents 1 Introduction
Page 5 and 6: 2 Databar system 5 Databar Building
Page 7 and 8: 6 The G-Bar 7 ThinLinc is a client
Page 9 and 10: 6 The G-Bar 9 some commands and pro
Page 11 and 12: 6 The G-Bar 11 Desktops IceWM gives
Page 13: 6 The G-Bar 13 Figure 3: The tree s
Page 17 and 18: 6 The G-Bar 17 Making and changing
Page 19 and 20: 6 The G-Bar 19 drive. 9 Most of the
Page 21 and 22: 6 The G-Bar 21 Figure 4: Screenshot
Page 23 and 24: 7 The Winbar 23 n-62-14-4(s001234)
Page 25 and 26: 7 The Winbar 25 7.5 Scanners Scanne
Page 27 and 28: 9 Mac at DTU 27 can also print to t

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