Downsize the student image
This commit is contained in:
Eric Coissac
@@ -3,6 +3,7 @@ title: "Regular Expressions"
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format:
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revealjs:
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theme: beige # thème des slides
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css: ../../slides.css
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transition: fade # effet de transition entre les slides
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---
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@@ -9,7 +9,7 @@
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Before Width: | Height: | Size: 6.6 KiB After Width: | Height: | Size: 6.5 KiB |
BIN
web_src/lectures/computers/unix/images/OBITools-web.png
Normal file
BIN
web_src/lectures/computers/unix/images/OBITools-web.png
Normal file
Binary file not shown.
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After Width: | Height: | Size: 155 KiB |
420
web_src/lectures/computers/unix/images/automata.svg
Normal file
420
web_src/lectures/computers/unix/images/automata.svg
Normal file
@@ -0,0 +1,420 @@
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web_src/lectures/computers/unix/images/exp1.svg
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||||
<dc:description>based on tango utilities terminal by warszawianka, made for alternativeto.net</dc:description>
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<dc:source>https://openclipart.org/detail/110197/terminal-icon-1:1-ratio-by-n2j3</dc:source>
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<rdf:li>square</rdf:li>
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After Width: | Height: | Size: 10 KiB |
464
web_src/lectures/computers/unix/slides.qmd
Normal file
464
web_src/lectures/computers/unix/slides.qmd
Normal file
@@ -0,0 +1,464 @@
|
||||
|
||||
---
|
||||
title: |
|
||||
DNA metabarcoding School
|
||||
Unix Basics
|
||||
author: frederic.boyer@univ-grenoble-alpes.fr
|
||||
format:
|
||||
revealjs:
|
||||
theme: beige
|
||||
css: ../../slides.css
|
||||
transition: fade
|
||||
width: 1280
|
||||
height: 720
|
||||
center: true
|
||||
---
|
||||
|
||||
# Introduction to Unix
|
||||
|
||||
|
||||
## Interacting with a UNIX computer
|
||||
|
||||
|
||||
### The command shell endless loop
|
||||
|
||||
{ width=80% }
|
||||
|
||||
|
||||
|
||||
## Bash
|
||||
|
||||
The basic command interpreter on the machine (and most often found on a linux machine) is `bash`.
|
||||
|
||||
|
||||
> Bash is a command processor that typically runs in a text window, where the user types commands that cause actions. Bash can also read commands from a file, called a script. Like all Unix shells, it supports filename globbing (wildcard matching), piping, here documents, command substitution, variables and control structures for condition-testing and iteration. The keywords, syntax and other basic features of the language were all copied from sh. Other features, e.g., history, were copied from csh and ksh. Bash is a POSIX shell, but with a number of extensions.
|
||||
>
|
||||
> [wikipedia:bash](https://en.wikipedia.org/wiki/Bash_%28Unix_shell%29)
|
||||
|
||||
|
||||
## RTFM !
|
||||
|
||||
> RTFM is an initialism for the expression "read the fucking manual" or, in the context of the Unix computer operating system, "read the fucking man page". The RTFM comment is usually expressed when the speaker is irritated by another person's question or lack of knowledge. It refers to either that person's inability to read a technical manual, or to their perceived laziness in not doing so first, before asking the question.
|
||||
>
|
||||
> [wikipedia:RTFM](https://en.wikipedia.org/wiki/RTFM)
|
||||
|
||||
|
||||
The official `bash` documentation: [documentation]( https://www.gnu.org/software/bash/manual/ )
|
||||
|
||||
|
||||
## RTFM: getting help with `man`
|
||||
|
||||
> A man page (short for manual page) is a form of software documentation usually found on a Unix or Unix-like operating system. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts. A user may invoke a man page by issuing the man command.
|
||||
>
|
||||
> [wikipedia:man page](https://en.wikipedia.org/wiki/Man_page)
|
||||
|
||||
| Useful command | What it does |
|
||||
|----------------------|-----------------------------------------|
|
||||
| `man <command>` | prints manual for the `command` command |
|
||||
|
||||
For example, to get the manual page for the `man` command:
|
||||
|
||||
```bash
|
||||
man man
|
||||
```
|
||||
|
||||
## RTFM: getting help with `-h` or `--help`
|
||||
|
||||
When there is no man page associated to a command one can use the `-h` or `--help` options:
|
||||
|
||||
For example, to get the help associated to the `man` command:
|
||||
|
||||
```bash
|
||||
man --help
|
||||
```
|
||||
|
||||
# Filesystem -- basic commands and streams
|
||||
|
||||
{ width=40% }
|
||||
|
||||
## Absolute path
|
||||
|
||||
> An absolute or full path points to the same location in a file system, regardless of the current working directory. To do that, it must include the root directory.
|
||||
>
|
||||
> [wikipedia:Path(computing)](https://en.wikipedia.org/wiki/Path_(computing))
|
||||
|
||||
The root of the filesystem is designed by `/`.
|
||||
|
||||
The different part of the path are separated by `/`.
|
||||
|
||||
## Absolute path
|
||||
|
||||
|
||||
{ width=30% }
|
||||
|
||||
The red path is : `/etc/passwd`
|
||||
|
||||
## Relative path
|
||||
|
||||
> By contrast, a relative path starts from some given working directory, avoiding the need to provide the full absolute path.
|
||||
>
|
||||
> [wikipedia:Path (computing)]( https://en.wikipedia.org/wiki/Path_(computing) )
|
||||
|
||||
## Special directories :
|
||||
- `~` : *home directory* for the current user
|
||||
- `~name` : *home directory* for user *name*
|
||||
- `.` : Current directory
|
||||
- `..` : Parent directory
|
||||
|
||||
{ width=30% }
|
||||
|
||||
|
||||
## Useful commands to interact with the filesystem
|
||||
|
||||
| Useful commands | What it does |
|
||||
|----------------------------|-----------------------------|
|
||||
| `pwd` | print working directory |
|
||||
| `cd <directory>` | change directory |
|
||||
| `mkdir <filename>` | create directory |
|
||||
| `ls <filename>` | list files and directories |
|
||||
| `touch <filename>` | create or touch a file |
|
||||
| `cp <filename> <filename>` | copy files or directories |
|
||||
| `mv <filename> <filename>` | move files or directories |
|
||||
| `rm <filename>` | remove files or directories |
|
||||
|
||||
|
||||
## Permissions
|
||||
|
||||
Files and directories are assigned permissions or access rights to specific users and groups of users. The permissions control the ability of the users to view, change, navigate, and execute the contents of the file system.
|
||||
|
||||
> Permissions on Unix-like systems are managed in three distinct scopes or classes.
|
||||
> These scopes are known as user, group, and others.
|
||||
>
|
||||
> [wikipedia: unix permissions](https://en.wikipedia.org/wiki/File_system_permissions#Traditional_Unix_permissions)
|
||||
|
||||
## Permissions
|
||||
|
||||
{ width=10% }
|
||||
|
||||
> The modes indicate which permissions are to be granted or taken away from the specified classes.
|
||||
> There are three basic modes which correspond to the basic permissions:
|
||||
>
|
||||
> | Mode | Name | Description |
|
||||
> |------|---------|--------------------------------------------|
|
||||
> | r | read | read a file or list a directory's contents |
|
||||
> | w | write | write to a file or directory |
|
||||
> | x | execute | execute a file or recurse a directory tree |
|
||||
>
|
||||
> [wikipedia:modes](https://en.wikipedia.org/wiki/Modes_(Unix))
|
||||
|
||||
## View and change permissions
|
||||
|
||||
| Useful commands | What it does |
|
||||
|------------------------------|--------------------|
|
||||
| `ls -l` | view permissions |
|
||||
| `chmod <options> <filename>` | change permissions |
|
||||
|
||||
|
||||
## For example:
|
||||
|
||||
```bash
|
||||
fboyer@obitools:~/$ ls -l index.html
|
||||
-rw-rw-r-- 1 fboyer fboyer 3101 déc. 21 17:09 index.html
|
||||
fboyer@obitools:~/$ chmod 500 index.html
|
||||
fboyer@obitools:~/$ ls -l index.html
|
||||
-r-x------ 1 fboyer fboyer 3101 déc. 21 17:09 index.html
|
||||
```
|
||||
|
||||
|
||||
|
||||
# Commands to work with text
|
||||
|
||||
## Visualize the content of a file
|
||||
|
||||
| Useful commands | What it does |
|
||||
|--------------------|----------------------------------------|
|
||||
| `less <filename>` | utility to explore text files |
|
||||
|
||||
|
||||
## The `less` command
|
||||
|
||||
| shortcut | What it does |
|
||||
|-----------------------|-------------------------------------------|
|
||||
| `h` | display help |
|
||||
| `q` | quit |
|
||||
| `/` | search for a regular pattern |
|
||||
| `n` | for the Next occurence of the pattern |
|
||||
| `shift-n` | for the previous occurence of the pattern |
|
||||
| `arrows` and `space` | to navigate |
|
||||
| `g` and `G` | go to top and end of the file |
|
||||
|
||||
## Edit a text file
|
||||
|
||||
| Useful commands | What it does |
|
||||
|--------------------|--------------------|
|
||||
| `nano <filename>` | Simple text editor |
|
||||
|
||||
|
||||
{ width=100% }
|
||||
|
||||
## Basic `Unix` commands to manipulate text files
|
||||
|
||||
| Useful commands | What it does |
|
||||
|-------------------------------|------------------------------------------------------------------|
|
||||
| `cat <filename>` | output the content of `filename` file |
|
||||
| `head [-<N>] <filename>` | output the first `N` lines of `filename` |
|
||||
| `tail [-<N>] <filename>` | output the last `N` lines of `filename` |
|
||||
| `sort [options] <filename>` | sort the content of `filename` and output it |
|
||||
| `cut [options] <filename>` | extract some column from `filename` and output it |
|
||||
| `diff [options] <filenames>` | compare files line by line and output the differences |
|
||||
|
||||
## Basic `Unix` commands to manipulate text files
|
||||
|
||||
| Useful commands | What it does |
|
||||
|-------------------------------|------------------------------------------------------------------|
|
||||
| `join [options] <filename> <filename>` | join files on the basis of column content |
|
||||
| `paste [options] <filenames>` | paste files line by line |
|
||||
| `wc [options] <filenames>` | count characters, words or lines |
|
||||
| `find <directory> [options]` | search files (Ex: `find . -name '*.txt'`) |
|
||||
| `sed <command> <filename>` | process file line by line for basic editing |
|
||||
| `grep [options] <regular expression> <filenames>` | search files for a *pattern* |
|
||||
| `egrep [options] <extended regular expression> <filenames>` | similar as using the `-e` option of `grep` |
|
||||
|
||||
## `Unix` streams
|
||||
|
||||
> In computer programming, standard streams are pre-connected input and output channels that allow communication between a computer program and its environment when the program begins execution.
|
||||
> The three I/O connections are called standard input (`stdin`), standard output (`stdout`) and standard error (`stderr`).
|
||||
|
||||
A basic `Unix` command: Piping a stream into another command> [wikipedia:streams](https://en.wikipedia.org/wiki/Standard_streams)
|
||||
|
||||
## A basic `Unix` command
|
||||
|
||||
{ width=50% }
|
||||
|
||||
standard input (`stdin`), standard output (`stdout`), standard error (`stderr`) and parameters don't need to be specified.
|
||||
|
||||
By default, `stdin` is empty, `stdout` and `stderr` output their content to the terminal.
|
||||
|
||||
## A basic `Unix` command: Specifying parameters
|
||||
|
||||
#### Exemples: Parameters
|
||||
|
||||
```bash
|
||||
grep -B 2 root /etc/passwd
|
||||
```
|
||||
|
||||
{ width=60% }
|
||||
|
||||
## A basic `Unix` command: Sending the content of a text file to the standard input
|
||||
|
||||
Most of the commands that handle text can, if no file is given as a parameter, use the content of `stdin`.
|
||||
|
||||
#### Exemples: Redirecting the standard input
|
||||
|
||||
```bash
|
||||
grep -B 2 root < /etc/passwd
|
||||
```
|
||||
|
||||
{ width=40% }
|
||||
|
||||
## A basic `Unix` command: Creating a text file from the output of a command
|
||||
|
||||
### Exemples: Redirecting the standard output
|
||||
|
||||
```bash
|
||||
# > create or replace file
|
||||
# >> append to file
|
||||
grep -B 2 root < /etc/passwd > result
|
||||
```
|
||||
|
||||
{width = 40%}
|
||||
|
||||
## A basic `Unix` command: Piping a stream into another command
|
||||
|
||||
### Exemples: Redirecting the standard output
|
||||
|
||||
```bash
|
||||
# > create or replace file
|
||||
# >> append to file
|
||||
grep -B 2 root < /etc/passwd | less
|
||||
```
|
||||
|
||||
{width = 20%}
|
||||
|
||||
## RTFM: Bash redirections
|
||||
|
||||
[Bash redirections](https://www.gnu.org/software/bash/manual/html_node/Redirections.html)
|
||||
|
||||
# The bash command challenge !
|
||||
|
||||
|
||||
{ width=80% }
|
||||
|
||||
|
||||
[I accept the challenge !](https://cmdchallenge.com/)
|
||||
|
||||
|
||||
|
||||
# The `OBITools`
|
||||
|
||||
{width = 80%}
|
||||
|
||||
## RTFM !
|
||||
|
||||
The [documentation](http://obitools4.metabarcoding.org) is available online.
|
||||
|
||||
{width = 80%}
|
||||
|
||||
## An `OBITools` command
|
||||
|
||||
{width = 80%}
|
||||
|
||||
|
||||
## Decorated fasta sequences
|
||||
|
||||
Basic fasta sequence:
|
||||
|
||||
```
|
||||
>my_sequence this is my pretty sequence
|
||||
ACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGT
|
||||
GTGCTGACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTGTTT
|
||||
AACGACGTTGCAGTACGTTGCAGT
|
||||
```
|
||||
|
||||
*Decorated* fasta sequence:
|
||||
|
||||
```
|
||||
>my_sequence taxid=3456; direct=True; sample=A354; this is my pretty sequence
|
||||
ACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGT
|
||||
GTGCTGACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTACGTTGCAGTGTTT
|
||||
AACGACGTTGCAGTACGTTGCAGT
|
||||
```
|
||||
*decoration* can be any set of `key=value;` couples
|
||||
|
||||
## Main OBITools commands (1/2)
|
||||
|
||||
|
||||
- Metabarcode design and quality assessment
|
||||
- `ecoPCR`: in silico PCR
|
||||
- `ecoPrimers`: new barcode markers and primers
|
||||
- `ecotaxstat`: getting the coverage of an ecoPCR output compared to the original ecoPCR database
|
||||
- `ecotaxspecificity`: Evaluates barcode resolution
|
||||
|
||||
- File format conversions
|
||||
- `obiconvert`: converts sequence files to different output formats
|
||||
- `obitab`: converts a sequence file to a tabular file
|
||||
|
||||
- Sequence annotations
|
||||
- `ecotag`: assigns sequences to taxa
|
||||
- `obiannotate`: adds/edits sequence record annotations
|
||||
|
||||
## Main OBITools commands (2/2)
|
||||
|
||||
- Computations on sequences
|
||||
- `illuminapairedend`: aligns paired-end Illumina reads
|
||||
- `ngsfilter`: Assigns sequence records to the corresponding experiment/sample based on DNA tags and primers
|
||||
- `obiclean`: tags a set of sequences for PCR/sequencing errors identification
|
||||
- `obiuniq`: groups and dereplicates sequences
|
||||
|
||||
- Sequence sampling and filtering
|
||||
- `obigrep`: filters sequence file
|
||||
- `obihead`: extracts the first sequence records
|
||||
|
||||
- Statistics over sequence file
|
||||
- `obicount`: counts the number of sequence records
|
||||
- `obistat`: computes basic statistics for attribute values
|
||||
|
||||
|
||||
## Regular expressions: Regex
|
||||
|
||||
> In computing, a regular expression is a specific pattern that provides concise and flexible means to "match" (specify and recognize) strings of text, such as particular characters, words, or patterns of characters.
|
||||
>
|
||||
> Common abbreviations for "regular expression" include regex and regexp.
|
||||
> - http://en.wikipedia.org/wiki/Regular_expression
|
||||
|
||||
## Graphical representation
|
||||
|
||||
A regular expression can be represented by an *automata*
|
||||
|
||||
{ width=50% }
|
||||
|
||||
## Occurrence of a regular pattern
|
||||
|
||||
If one can get to the final state, the text `match` the regular expression.
|
||||
|
||||
|
||||
{ width=50% }
|
||||
|
||||
> Tutu et **_toto_** sont sur un bateau. Toto tombe à l’eau.
|
||||
|
||||
> Obama: «If daughters get tat**_too_**s, we will **_too_**»
|
||||
|
||||
## Exemples of regular expressions
|
||||
|
||||
Regular expressions defined on DNA → Σ={A,C,G,T}
|
||||
|
||||
| Regular expression | Automata |
|
||||
|-------------------------------|---------------------------------------------------------------------|
|
||||
| `ATG` (start codon) | { width=100% } |
|
||||
| `[ATG]TG` <br> `[^C]TG`(all start codons) | ![[ATG]TG](images/exp3.svg){ width=100% } |
|
||||
|
||||
## Exemples of regular expressions
|
||||
|
||||
Regular expressions defined on DNA → Σ={A,C,G,T}
|
||||
|
||||
| Regular expression | Automata |
|
||||
|-------------------------------|---------------------------------------------------------------------|
|
||||
| `.TG` <br> `[ACGT]TG` (all codons ending with TG) | { width=100% } |
|
||||
| `TTA+TT` <br> `TTAA*TT` (TT, at least one A, TT) | { width=100% } |
|
||||
|
||||
## Exemples of regular expressions
|
||||
|
||||
Regular expressions defined on DNA → Σ={A,C,G,T}
|
||||
|
||||
| Regular expression | Automata |
|
||||
|-------------------------------|---------------------------------------------------------------------|
|
||||
| `TAA`|`TAG`|`TGA` <br> `T(AA`|`AG`|`GA)` (All stop codons) | { width=100% } |
|
||||
|
||||
## Syntax of regular expressions
|
||||
|
||||
| Syntax | What it matches |
|
||||
|-------------------|--------------------------------------------------|
|
||||
| `^` | begining of the line |
|
||||
| `$` | end of the line |
|
||||
| `[]` | set of characters |
|
||||
| `[^]` | all characters but these ones (ex: `TTA{3,5}TT`) |
|
||||
| | | multiple choices |
|
||||
| `{}` | repetitions |
|
||||
| `*` | any number of times |
|
||||
| `+` | at least once |
|
||||
| `?` | none or once |
|
||||
| `\*` | the `*` character (same for `+`, `(`, `[`, ...) |
|
||||
|
||||
## Special characters: Regular expression extensions
|
||||
|
||||
| Special characters| What it matches |
|
||||
|-------------------|--------------------------------------------------|
|
||||
| `()` | used to define sub-expressions |
|
||||
| `\n` | used to reuse the text matched by the `n`th sub-expression |
|
||||
|
||||
## Syntax of extended regular expressions
|
||||
|
||||
Extended regular expressions defined on DNA → Σ={A,C,G,T}
|
||||
|
||||
| Regular expression | Automata |
|
||||
|-------------------------------|---------------------------------------------------------------------|
|
||||
| `([ACGT]{3})\1{9,}` (matching a stretch of at least the same codon 10 times) | As the langage described is not regular, no automaton can be used to represent the expression |
|
||||
|
||||
|
||||
[What is my regular expression engine capable of ?](https://en.wikipedia.org/wiki/Comparison_of_regular_expression_engines)
|
||||
|
||||
## Regular expressions and `obigrep`
|
||||
|
||||
Regular expressions can be used with `obigrep` to filter sequences with the appropriate options:
|
||||
|
||||
-s <REGULAR_PATTERN>, --sequence=<REGULAR_PATTERN>
|
||||
regular expression pattern used to select the
|
||||
sequence. The pattern is case insensitive
|
||||
-D <REGULAR_PATTERN>, --definition=<REGULAR_PATTERN>
|
||||
regular expression pattern matched against the
|
||||
definition of the sequence. The pattern is case
|
||||
sensitive
|
||||
-I <REGULAR_PATTERN>, --identifier=<REGULAR_PATTERN>
|
||||
regular expression pattern matched against the
|
||||
identifier of the sequence. The pattern is case
|
||||
sensitive
|
||||
@@ -1,365 +0,0 @@
|
||||
---
|
||||
title: "Unix Basics"
|
||||
format:
|
||||
revealjs:
|
||||
theme: beige
|
||||
transition: fade
|
||||
width: 1280
|
||||
height: 720
|
||||
center: true
|
||||
---
|
||||
|
||||
## Why Learn Unix?
|
||||
|
||||
- Foundational philosophy for modern computing
|
||||
- Powers most of the digital world
|
||||
- Born at AT&T's Bell Labs in late 1960s
|
||||
- Design principles: simplicity, modularity
|
||||
|
||||
## Unix Today
|
||||
|
||||
- **Certified Unix**: macOS
|
||||
- **Unix-like Systems**: GNU/Linux, BSD variants
|
||||
- **Linux**: Dominant Unix-like OS
|
||||
- Understanding Unix = understanding DNA of modern OS
|
||||
|
||||
## Unix System Overview
|
||||
|
||||
**Multi-user, Multitasking Operating System**
|
||||
|
||||
```{mermaid}
|
||||
graph TD
|
||||
A[OS Kernel] --> B[User 1 Process]
|
||||
A --> C[User 2 Process]
|
||||
A --> D[User 3 Process]
|
||||
B --> E[File System]
|
||||
C --> E
|
||||
D --> E
|
||||
style A fill:#2e86ab,color:#fff
|
||||
style B fill:#a23b72,color:#fff
|
||||
style C fill:#f18f01,color:#fff
|
||||
style D fill:#c73e1d,color:#fff
|
||||
style E fill:#3c8d5f,color:#fff
|
||||
```
|
||||
|
||||
## File System Structure
|
||||
|
||||
**Hierarchical Tree Organization**
|
||||
|
||||
```{mermaid}
|
||||
graph TD
|
||||
Root[/] --> etc["/etc<br/>config files"]
|
||||
Root --> home["/home<br/>user directories"]
|
||||
Root --> usr["/usr<br/>system software"]
|
||||
Root --> var["/var<br/>variable data"]
|
||||
home --> user1[/user1/]
|
||||
home --> user2[/user2/]
|
||||
user1 --> docs[Documents]
|
||||
user1 --> downloads[Downloads]
|
||||
|
||||
style Root fill:#2e86ab,color:#fff;
|
||||
style etc fill:#a23b72,color:#fff;
|
||||
style home fill:#f18f01,color:#fff;
|
||||
style usr fill:#c73e1d,color:#fff;
|
||||
style var fill:#3c8d5f,color:#fff;
|
||||
```
|
||||
|
||||
## File Naming Rules
|
||||
|
||||
**Allowed Characters:**
|
||||
|
||||
- Letters (a-z, A-Z), Numbers (0-9)
|
||||
- Recommended: `.`, `%`, `-`, `_`, `:`, `=`
|
||||
|
||||
**Key Rules:**
|
||||
|
||||
- **Case sensitive**: `File.txt` ≠ `file.txt` ≠ `FILE.TXT`
|
||||
- **No leading dash**: `-file` causes issues (use `./-file`)
|
||||
- **Hidden files**: Start with `.` (e.g., `.bashrc`)
|
||||
|
||||
**Best Practices:**
|
||||
|
||||
```bash
|
||||
good_file.txt # Clear and safe
|
||||
data-set-01.csv # Descriptive with hyphens
|
||||
project_config # No extension needed
|
||||
```
|
||||
|
||||
## Globbing - Pattern Matching
|
||||
|
||||
**Wildcard Characters:**
|
||||
|
||||
```bash
|
||||
* # Any sequence of characters
|
||||
? # Any single character
|
||||
[abc] # Any character in set
|
||||
[a-z] # Any character in range
|
||||
```
|
||||
|
||||
**Practical Examples:**
|
||||
|
||||
```bash
|
||||
ls *.txt # All text files
|
||||
ls report?.pdf # report1.pdf, reportA.pdf
|
||||
ls [abc]*.log # a.log, b_data.log, c-backup.log
|
||||
ls image[0-9].jpg # image0.jpg through image9.jpg
|
||||
```
|
||||
|
||||
## Advanced Globbing
|
||||
|
||||
**Combining Patterns:**
|
||||
|
||||
```bash
|
||||
ls *.{txt,md} # All .txt AND .md files
|
||||
ls project_{dev,prod} # project_dev, project_prod
|
||||
ls file[!0-9]* # Files NOT starting with digit
|
||||
```
|
||||
|
||||
**Use in Commands:**
|
||||
|
||||
```bash
|
||||
cp *.txt backup/ # Copy all text files
|
||||
rm temp_*.log # Remove temporary logs
|
||||
chmod +x *.sh # Make all scripts executable
|
||||
```
|
||||
|
||||
**Pattern Expansion:**
|
||||
|
||||
```bash
|
||||
echo *.py # Shows what patterns match
|
||||
ls data_202{3,4}*.csv # Multiple year patterns
|
||||
```
|
||||
|
||||
## Globbing vs Regular Expressions
|
||||
|
||||
**Key Differences:**
|
||||
|
||||
- **Globbing**: File matching (`ls *.txt`)
|
||||
- **Regex**: Text pattern matching (`grep "^A" file.txt`)
|
||||
|
||||
**Remember:** Globbing happens **before** command execution!
|
||||
|
||||
## File Permissions
|
||||
|
||||
**Three categories × Three rights**
|
||||
|
||||
```bash
|
||||
-rwxr-xr-- # Owner: read, write, execute
|
||||
# Group: read, execute
|
||||
# Others: read only
|
||||
```
|
||||
|
||||
```{=html}
|
||||
<svg viewBox="0 0 600 200" xmlns="http://www.w3.org/2000/svg">
|
||||
<defs>
|
||||
<pattern id="read" patternUnits="userSpaceOnUse" width="10" height="10">
|
||||
<rect width="10" height="10" fill="#2e86ab" opacity="0.3"/>
|
||||
<line x1="0" y1="0" x2="10" y2="10" stroke="#2e86ab" stroke-width="1"/>
|
||||
</pattern>
|
||||
<pattern id="write" patternUnits="userSpaceOnUse" width="10" height="10">
|
||||
<rect width="10" height="10" fill="#a23b72" opacity="0.3"/>
|
||||
<rect x="2" y="2" width="6" height="6" fill="#a23b72" opacity="0.6"/>
|
||||
</pattern>
|
||||
<pattern id="execute" patternUnits="userSpaceOnUse" width="10" height="10">
|
||||
<rect width="10" height="10" fill="#f18f01" opacity="0.3"/>
|
||||
<circle cx="5" cy="5" r="3" fill="#f18f01" opacity="0.6"/>
|
||||
</pattern>
|
||||
</defs>
|
||||
|
||||
<!-- Owner Permissions -->
|
||||
<g transform="translate(50, 50)">
|
||||
<rect x="0" y="0" width="150" height="100" fill="#2e86ab" opacity="0.1" stroke="#2e86ab" stroke-width="2"/>
|
||||
<text x="75" y="30" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="16" fill="#2e86ab">Owner</text>
|
||||
<g transform="translate(40, 50)">
|
||||
<rect x="0" y="0" width="20" height="20" fill="url(#read)"/>
|
||||
<text x="10" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#2e86ab">r</text>
|
||||
<rect x="30" y="0" width="20" height="20" fill="url(#write)"/>
|
||||
<text x="40" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#a23b72">w</text>
|
||||
<rect x="60" y="0" width="20" height="20" fill="url(#execute)"/>
|
||||
<text x="70" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#f18f01">x</text>
|
||||
</g>
|
||||
</g>
|
||||
|
||||
<!-- Group Permissions -->
|
||||
<g transform="translate(225, 50)">
|
||||
<rect x="0" y="0" width="150" height="100" fill="#a23b72" opacity="0.1" stroke="#a23b72" stroke-width="2"/>
|
||||
<text x="75" y="30" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="16" fill="#a23b72">Group</text>
|
||||
<g transform="translate(40, 50)">
|
||||
<rect x="0" y="0" width="20" height="20" fill="url(#read)"/>
|
||||
<text x="10" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#2e86ab">r</text>
|
||||
<rect x="30" y="0" width="20" height="20" fill="#f5f5f5" stroke="#ccc" stroke-width="1"/>
|
||||
<text x="40" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#999">-</text>
|
||||
<rect x="60" y="0" width="20" height="20" fill="url(#execute)"/>
|
||||
<text x="70" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#f18f01">x</text>
|
||||
</g>
|
||||
</g>
|
||||
|
||||
<!-- Others Permissions -->
|
||||
<g transform="translate(400, 50)">
|
||||
<rect x="0" y="0" width="150" height="100" fill="#f18f01" opacity="0.1" stroke="#f18f01" stroke-width="2"/>
|
||||
<text x="75" y="30" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="16" fill="#f18f01">Others</text>
|
||||
<g transform="translate(40, 50)">
|
||||
<rect x="0" y="0" width="20" height="20" fill="url(#read)"/>
|
||||
<text x="10" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#2e86ab">r</text>
|
||||
<rect x="30" y="0" width="20" height="20" fill="#f5f5f5" stroke="#ccc" stroke-width="1"/>
|
||||
<text x="40" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#999">-</text>
|
||||
<rect x="60" y="0" width="20" height="20" fill="#f5f5f5" stroke="#ccc" stroke-width="1"/>
|
||||
<text x="70" y="35" text-anchor="middle" font-family="monospace" font-size="12" fill="#999">-</text>
|
||||
</g>
|
||||
</g>
|
||||
</svg>
|
||||
```
|
||||
|
||||
## Process Concept
|
||||
|
||||
**Program vs Process**
|
||||
|
||||
```{=html}
|
||||
<svg viewBox="0 0 500 200" xmlns="http://www.w3.org/2000/svg">
|
||||
<defs>
|
||||
<marker id="arrowhead" markerWidth="10" markerHeight="7" refX="9" refY="3.5" orient="auto">
|
||||
<polygon points="0 0, 10 3.5, 0 7" fill="#2e86ab"/>
|
||||
</marker>
|
||||
<filter id="shadow" x="-20%" y="-20%" width="140%" height="140%">
|
||||
<feDropShadow dx="2" dy="2" stdDeviation="3" flood-color="#000000" flood-opacity="0.3"/>
|
||||
</filter>
|
||||
</defs>
|
||||
|
||||
<!-- Program (Static) -->
|
||||
<g transform="translate(50, 50)">
|
||||
<rect x="0" y="0" width="180" height="100" rx="10" fill="#2e86ab" filter="url(#shadow)"/>
|
||||
<rect x="5" y="5" width="170" height="90" rx="8" fill="#ffffff"/>
|
||||
<text x="90" y="35" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="18" fill="#2e86ab">Program</text>
|
||||
<text x="90" y="60" text-anchor="middle" font-family="Arial, sans-serif" font-size="14" fill="#666">Static Code</text>
|
||||
<text x="90" y="80" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" fill="#888">(On Disk)</text>
|
||||
</g>
|
||||
|
||||
<!-- Arrow -->
|
||||
<path d="M 240 100 L 310 100" stroke="#2e86ab" stroke-width="3" marker-end="url(#arrowhead)"/>
|
||||
<text x="275" y="95" text-anchor="middle" font-family="Arial, sans-serif" font-size="14" fill="#2e86ab">execution</text>
|
||||
|
||||
<!-- Process (Dynamic) -->
|
||||
<g transform="translate(320, 50)">
|
||||
<rect x="0" y="0" width="180" height="100" rx="10" fill="#a23b72" filter="url(#shadow)"/>
|
||||
<rect x="5" y="5" width="170" height="90" rx="8" fill="#ffffff"/>
|
||||
<text x="90" y="35" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="18" fill="#a23b72">Process</text>
|
||||
<text x="90" y="60" text-anchor="middle" font-family="Arial, sans-serif" font-size="14" fill="#666">Running Instance</text>
|
||||
<text x="90" y="80" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" fill="#888">(In Memory)</text>
|
||||
</g>
|
||||
</svg>
|
||||
```
|
||||
|
||||
## Shell Environment
|
||||
|
||||
**Your Command Interface**
|
||||
|
||||
```{=html}
|
||||
<svg viewBox="0 0 500 250" xmlns="http://www.w3.org/2000/svg">
|
||||
<defs>
|
||||
<filter id="shellShadow" x="-20%" y="-20%" width="140%" height="140%">
|
||||
<feDropShadow dx="3" dy="3" stdDeviation="4" flood-color="#000000" flood-opacity="0.2"/>
|
||||
</filter>
|
||||
</defs>
|
||||
|
||||
<!-- Main Shell Container -->
|
||||
<rect x="100" y="30" width="300" height="160" rx="15" fill="#f8f9fa" stroke="#2e86ab" stroke-width="3" filter="url(#shellShadow)"/>
|
||||
|
||||
<!-- Shell Title -->
|
||||
<text x="250" y="60" text-anchor="middle" font-family="Arial, sans-serif" font-weight="bold" font-size="20" fill="#2e86ab">Shell Environment</text>
|
||||
|
||||
<!-- Command Input Area -->
|
||||
<rect x="130" y="80" width="240" height="30" rx="5" fill="#ffffff" stroke="#a23b72" stroke-width="2"/>
|
||||
<text x="140" y="100" text-anchor="start" font-family="monospace" font-size="14" fill="#333">$ ls -l *.txt</text>
|
||||
|
||||
<!-- Input Source -->
|
||||
<g transform="translate(50, 150)">
|
||||
<rect x="0" y="0" width="80" height="40" rx="8" fill="#2e86ab" opacity="0.8"/>
|
||||
<text x="40" y="20" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" fill="#fff">Keyboard</text>
|
||||
<text x="40" y="35" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#fff">Input</text>
|
||||
</g>
|
||||
|
||||
<!-- Output Destination -->
|
||||
<g transform="translate(370, 150)">
|
||||
<rect x="0" y="0" width="80" height="40" rx="8" fill="#a23b72" opacity="0.8"/>
|
||||
<text x="40" y="20" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" fill="#fff">Terminal</text>
|
||||
<text x="40" y="35" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#fff">Output</text>
|
||||
</g>
|
||||
|
||||
<!-- Arrows -->
|
||||
<path d="M 130 150 L 180 120" stroke="#2e86ab" stroke-width="2" marker-end="url(#arrowhead)"/>
|
||||
<path d="M 320 120 L 370 150" stroke="#a23b72" stroke-width="2" marker-end="url(#arrowhead)"/>
|
||||
|
||||
<!-- Process Execution -->
|
||||
<rect x="200" y="120" width="100" height="40" rx="5" fill="#f18f01" opacity="0.8"/>
|
||||
<text x="250" y="140" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" fill="#fff">Process</text>
|
||||
<text x="250" y="155" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#fff">Execution</text>
|
||||
</svg>
|
||||
```
|
||||
|
||||
## Command Structure
|
||||
|
||||
```bash
|
||||
command [options] [arguments] [redirections]
|
||||
```
|
||||
|
||||
**Examples:**
|
||||
```bash
|
||||
ls -l /home # List with details
|
||||
grep "error" log.txt # Search pattern
|
||||
find . -name "*.txt" # Find files
|
||||
```
|
||||
|
||||
## Input/Output Redirection
|
||||
|
||||
**Controlling Data Flow**
|
||||
|
||||
```{mermaid}
|
||||
flowchart LR
|
||||
A[Input File<br/>data.txt] --> B{Command<br/>program}
|
||||
B --> C[Output File<br/>results.txt]
|
||||
|
||||
style A fill:#2e86ab,color:#fff
|
||||
style B fill:#a23b72,color:#fff
|
||||
style C fill:#f18f01,color:#fff
|
||||
```
|
||||
|
||||
## Pipes - Command Chaining
|
||||
|
||||
**Connect processes together**
|
||||
|
||||
```bash
|
||||
cat file.txt | grep "error" | sort | uniq
|
||||
```
|
||||
|
||||
```{mermaid}
|
||||
flowchart LR
|
||||
A[cat<br/>Reads file] -->|stdout| B[grep<br/>Filters text]
|
||||
B -->|stdout| C[sort<br/>Orders data]
|
||||
C -->|stdout| D[uniq<br/>Removes duplicates]
|
||||
|
||||
style A fill:#2e86ab,color:#fff
|
||||
style B fill:#a23b72,color:#fff
|
||||
style C fill:#f18f01,color:#fff
|
||||
style D fill:#3c8d5f,color:#fff
|
||||
```
|
||||
|
||||
## Essential Commands
|
||||
|
||||
| Category | Commands | Purpose |
|
||||
|----------|----------|---------|
|
||||
| **Files** | `ls, cp, mv, rm, mkdir` | Manage files and directories |
|
||||
| **Navigation** | `cd, pwd` | Move around file system |
|
||||
| **Text** | `cat, grep, head, tail, wc` | View and search text |
|
||||
| **Process** | `ps, kill, &, bg, fg` | Manage running programs |
|
||||
| **Help** | `man, --help` | Get command information |
|
||||
|
||||
## Getting Started
|
||||
|
||||
**Next Steps:**
|
||||
- Practice basic file operations
|
||||
- Learn command combinations with pipes
|
||||
- Study pattern matching with wildcards
|
||||
- Explore shell scripting for automation
|
||||
- Use `man` pages for detailed help
|
||||
|
||||
**Remember:** Unix mastery comes through practice!
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,4 +1,9 @@
|
||||
/* Centre toutes les images dans les slides */
|
||||
|
||||
.reveal {
|
||||
font-size: 1.5em;
|
||||
}
|
||||
|
||||
.quarto-figure-default {
|
||||
display: block;
|
||||
margin-left: auto;
|
||||
Reference in New Issue
Block a user