Difference between revisions of "Introduction to Linux in HPC/Linux Directory Structure"
Introduction to Linux in HPC/Linux Directory Structure
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| Line 40: | Line 40: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | + / | + | + <code>/</code> |
|| Explanation: The tree structure for directory is used in Linux system. Therefore the top directory in Linux is /. The /home directory may be an upper level directory for all non-root users. The last option C:\ represents the C drive on Windows. | || Explanation: The tree structure for directory is used in Linux system. Therefore the top directory in Linux is /. The /home directory may be an upper level directory for all non-root users. The last option C:\ represents the C drive on Windows. | ||
| − | - /home | + | - <code>/home</code> |
|| | || | ||
| − | - C:\ | + | - <code>C:\</code> |
|| | || | ||
</quiz> | </quiz> | ||
| Line 51: | Line 51: | ||
{{hidden begin | {{hidden begin | ||
| − | |title = 2. The command | + | |title = 2. The command <code>cd</code> without arguments : if you start in <code>var/log/</code> and run <code>cd</code> with no arguments, what do you expect will happen? |
}} | }} | ||
<quiz display=simple> | <quiz display=simple> | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | - Nothing it stays in /var/log/ | + | - Nothing it stays in <code>/var/log/</code> |
|| | || | ||
+ It goes to your home directory | + It goes to your home directory | ||
| − | || Explanation: It goes to your home directory. cd without arguments is a shortcut to take you home. As long as your home directory exists, you can always go home | + | || Explanation: It goes to your home directory. <code>cd</code> without arguments is a shortcut to take you home. As long as your home directory exists, you can always go home |
- It goes to the filesystem root | - It goes to the filesystem root | ||
|| | || | ||
Revision as of 11:25, 2 October 2020
Video
Linux Introduction Slides 33 - 48 (16 pages)
Slide Layout
page 1:
Windows: drive letter + backslash (C:)
Linux: standard tree directory structure
Absolute path: starts with /
Relative path: w.r.t. working directory
page 2 - 11:
Animation for directory structure
example directories
page 12:
everything is a file: /dev and /proc
program/script can be found with which
special directories: ., .. and ~
page 13:
cd command
page 14: 40 sec
ls command
page 15:
specific commands: Ctrl+key (C, Z, D), exit and clear
page 16:
no undo
make sure what you want to do
Quiz
1. Which one is the top directory in Linux?
2. The command
cd without arguments : if you start in var/log/ and run cd with no arguments, what do you expect will happen?
| Info: | no tips in this section |
| Warning: | no undo and make sure what you want to do (page 16) |
Exercises in Terminal (slide 49)
1. Go to a specific subfolder of a folder (example: cd Documents/courses/ ) and get back to the home directory using cd command. List 3 different ways to do it using one command. check after every action your path with pwd command.
| Answer: |
cd
cd ~
cd $HOME
the last option $HOME is an enviornment variable. You will learn about enviornment variables later.
|
2. Go to the directory /tmp and jump between /tmp and your home directory back and forth. check after every action your path with pwd command.
| Answer: |
cd /tmp
cd -
cd - with cd - you change back to the previous working directory, pass the dash (-) character as an argument to the cd command.
|