Unverified Commit 60558a16 authored by Todor Kondic's avatar Todor Kondic
Browse files

Minimal, but complete presentation

parent 1d4bc5ee
# Presentation Title
## Month XYth, 2019
## 26 March 2020
<div style="top: 6em; left: 0%; position: absolute;">
<img src="theme/img/lcsb_bg.png">
......
......@@ -10,7 +10,4 @@
+ Using SSH, a de-facto standard for secure communication
<!-- .element: class="fragment" -->
<!-- <iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/A-HIlNGczgU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> -->
......@@ -18,7 +18,7 @@
<!-- .element: class="fragment" -->
[1]: https://git-r3lab.uni.lu/R3/school/courses/blob/gnu-linux/2020/2020-02-15_gnuLinuxCourse/resources.md
[1]: https://git-r3lab.uni.lu/R3/school/courses/blob/develop/2020/2020-02-15_gnuLinuxCourse/resources.md
[2]: https://duckduckgo.com
[3]: https://unix.stackexchange.com/
[4]: https://www.reddit.com/r/linux/
......@@ -5,9 +5,13 @@
{ "filename" : "intro_aim.md"},
{ "filename" : "shell.md"},
{ "filename" : "shell/start.md"},
{ "filename" : "shell/file-explorer-basic.md"},
{ "filename" : "shell/file-explorer-basic-concepts.md"},
{ "filename" : "shell/effective-cmd-editing.md"},
{ "filename" : "shell/effective-cmd-editing-concepts.md"},
{ "filename" : "shell/cp-mv.md"},
{ "filename" : "shell/rm.md"},
{ "filename" : "shell/cp-mv-rm-concepts.md"},
{ "filename" : "ssh_intro.md"},
{ "filename" : "ssh_intro_2.md"},
{ "filename" : "ssh_intro_3.md"},
......
# File Explorer: Copy(cp), Move(mv) and Remove(rm) (Concepts)
* cp, mv and rm can act on either files, or directories
```shell
cp file1 file2
mv file1 file2
cp -R dir1 new/location
mv dir1 new/location
cp file1 file2 ... some/existing/dir
mv file1 file2 ... some/existing/dir
rm file1 ...
rm -R dir
rm -Rf dir # Danger!
```
* Effectiveness of these commands greatly improved by file patterns
- *, ., [0-9],[ABC], {}, etc
# File Explorer: Effective Command Line Editing (Concepts)
* Moving using arrow keys is tedious
* Retyping commands that contain a typo is even more tedious
* *Readline* facility of the bash shell offers quicker navigation
- Move by a word left and right using `Ctrl`+`Left`, or `Right`
- Move to a beginning, or the end of the line using `Ctrl`+`A` and `Ctrl`+`E`
- Delete an entire word using `Alt`+`D`
- Paste a deleted word with `Ctrl`+`Y`
* Reuse previous commands!
- The shell remembers what you type
- Move to a previous line in history using `Up` and `Down` arrows
# Practical: Effective Command Line Editing
# File Explorer: Effective Command Line Editing
```console
$ # Move up the history list until 'mkdir linux-practical-01'.
......@@ -17,16 +17,9 @@ $ touch subdir-02/a subdir-02/b subdir-02/c
$ history 10 # Lists last ten commands.
$ cd
```
<!-- * Motions -->
<!-- - `Left` and `Right` arrow move one character left, or right -->
<!-- - `Ctrl` + `Left`, or `Right` move left, or right for one word -->
<!-- - `Ctrl` + `A`, or `E` move to the beginning, or the end of the line -->
<!-- - `Up` and `Down` move through history entries -->
<!-- - `TAB` completes -->
# File Explorer: Basics (Concepts)
* While interacting with a shell, we are always in a given *working directory*
* Data is organised into directories and files, like on other systems.
* Location of a file in respect to the current directory is given by a (*relative*) file path
- some/dir/with/a/file
* New commands:
- `pwd` : outputs the current working directory
- `ls [-lhd ... file1 file2 file3 ...]` : lists files
- `cd path/to/existing/dir` : change current directory to a new directory
- `mkdir [-p] path/to/new/dir` : creates a new directory
- `touch file1 [file2 file3 ...]` : creates an empty file.
- `history` : view the list of commands executed so far
# File Explorer: Basics
```console
$ pwd # Displays the absolute path to the current dirrectory.
$ ls # List contents of the current directory.
$ mkdir linux-practical-01 # Create a new directory.
$ cd linux-practical-01 # Switch to a different directory.
$ touch pr1-hello-world.txt # Create a new and empty file.
$ mkdir subdir-01 # Create another directory.
$ touch subdir-01/a subdir-01/b subdir-01/c # Create multiple empty files.
$ ls subdir-01 # List contents of directory.
$ mkdir -p subdir-02/dir-X/dir-Y/dir-Z # Create a nested directory under the path.
$ ls subdir-02/dir-X # Confirm the directory dir-Y has been created.
$ history # Lists the commands executed so far.
$ cd
```
<!-- * Concepts -->
<!-- - Files and directories -->
<!-- - Paths -->
<!-- - Importance of quoting -->
<!-- - History -->
# File Explorer: The Immediate Surroundings
# Command Line
* Command line
- **Command prompt:** Non-editable; May provide contextual information
- **Command area:** Typed commands are shown here
- **RETURN or ENTER:** Pressing this key will execute the command
```shell
prompt$ command arg1 arg2 ...
```
<!-- .element: class="fragment" -->
```console
$ pwd # Displays the absolute path to the current dirrectory.
$ ls # List contents of the current directory.
$ mkdir linux-practical-01 # Create a new directory.
$ cd linux-practical-01 # Switch to a different directory.
$ touch pr1-hello-world.txt # Create a new and empty file.
$ mkdir subdir-01 # Create another directory.
$ touch subdir-01/a subdir-01/b subdir-01/c # Create multiple empty files.
$ ls subdir-01 # List contents of directory.
$ mkdir -p subdir-02/dir-X/dir-Y/dir-Z # Create a nested directory under the path.
$ ls subdir-02/dir-X # Confirm the directory dir-Y has been created.
$ history # Lists the commands executed so far.
$ cd
```
<!-- .element: class="fragment" -->
<!-- * Concepts -->
<!-- - Files and directories -->
<!-- - Paths -->
<!-- - Importance of quoting -->
<!-- - History -->
* **Command prompt:** Non-editable; May provide contextual information
* **Command area:** Typed commands are shown here
* **RETURN or ENTER:** Pressing this key will execute the command
* General form of the commands
```shell
prompt$ ls
prompt$ ls -a
prompt$ ls --help
prompt$ rsync -avz /path/to/file/a /path/to/file/b
prompt$ make -j8
prompt$ gfortran -c -mtune=native
```
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