advance for course2

docs/pages/bash_manip/bash_manip-0-setup.md

+To do this exercice you will use data of first names given to children born in France since 1900 downloaded from "Institut national de la statistique et des études économiques" (see [here](https://www.insee.fr/fr/statistiques/8205621?sommaire=8205628) for details).
+
+```bash
+wget https://www.insee.fr/fr/statistiques/fichier/2540004/nat2021_csv.zip
+unzip nat2021_csv.zip 
+```
+
+You should now have a file called `nat2021.csv` in your working directory.
+
+The data contained in this file have this shape:
+```
+sexe;preusuel;annais;nombre
+2;SANDRINE;1973;17605
+1;JEAN;1960;17607
+1;_PRENOMS_RARES;1904;1430
+```
+
+The first line is the header where `preusuel` means `prenom usuel` and `annais` means `année naissance`.  
+The subsequent lines are the data.  
+1 in column sex means male and 2 means female.
+`_PRENOMS_RARES` are rare first names. They are classified as rare following criteria described [here](https://www.insee.fr/fr/statistiques/8205621?sommaire=8205628#documentation).
\ No newline at end of file

docs/pages/bash_manip/bash_manip-2-basics.md

-# Extracting from files
+# Basic commands
 
-To do this exercice you will use data of first names given to children born in France since 1900 downloaded from "Institut national de la statistique et des études économiques" (see [here](https://www.insee.fr/fr/statistiques/8205621?sommaire=8205628) for details).
+## setup
 
-```bash
-wget https://www.insee.fr/fr/statistiques/fichier/2540004/nat2021_csv.zip
-unzip nat2021_csv.zip 
-```
-
-You should now have a file called `nat2021.csv` in your working directory.
-
-The data contained in this file have this shape:
-```
-sexe;preusuel;annais;nombre
-2;SANDRINE;1973;17605
-1;JEAN;1960;17607
-1;_PRENOMS_RARES;1904;1430
-```
-
-The first line is the header where `preusuel` means `prenom usuel` and `annais` means `année naissance`.  
-The subsequent lines are the data.  
-`_PRENOMS_RARES` are rare first names. They are classified as rare following criteria described [here](https://www.insee.fr/fr/statistiques/8205621?sommaire=8205628#documentation).
+{%
+    include-markdown "pages/bash_manip/bash_manip-0-setup.md"
+%}
 
 ## Displaying sample (head, tail)
 
@@ -139,12 +124,12 @@ The `uniq` command can be used to remove the redundancy. But result need to be s
 You can redirect a result and store it in a file thanks to the `>` redirection:  
 `command > filename`
 
-!!! question "Save all the names from 2005 in a dedicated file?"
+!!! question "Choose a command used before and save the result in a dedicated file?"
 
 ??? example "Click to show the solution"  
     ```bash
     # command
-    grep ";2025;" nat2021.csv > names2005.txt
+    sort -n -t ';' -k4  nat2021.csv | tail -n 100 | cut -d";" -f 2 | sort | uniq > names2005.txt
     ```
 
 ## Final question

docs/pages/bash_manip/bash_manip-3-grep.md

-# Extracting from files
+# Grep
 
-To do this exercice you will need to download French First name data from "Institut national de la statistique
-et des études économiques"
+## setup
 
+??? quote "First click and follow the instructions below only if you start the course at this stage! Otherwise skip this step!"
+    {%
+    include-markdown "pages/bash_manip/bash_manip-0-setup.md"
+    %}
+
+## Concept
+
+`Grep` stands for "global regular expression print". It searches through the contents of files for lines that match a specified **pattern**.  
+The basic syntax is:  
 ```bash
-wget https://www.insee.fr/fr/statistiques/fichier/2540004/nat2021_csv.zip
-unzip nat2021_csv.zip 
+grep [options] pattern [file...]
 ```
 
-You should now have a file called `nat2021.csv` in your working directory.
+It has a lot of options but the most common ones are:
+
+
+| Command | Explanation |
+|---------|-------------|
+| -i | Ignore case distinctions in patterns and data. |
+| -v | Invert the match, showing lines that do not match the pattern. |
+| -n | Prefix each line of output with the line number. |
+| -c | Print only a count of matching lines per file. |
+| -o | Print each match on a new line. |
 
+## Excercice
 
+!!! question "How many lines contain the number `2` in `nat2021.csv` file?"
 
-## Searching patterns (grep)
+??? example "Click to show the solution"  
+    ```bash
+    grep 2 nat2021.csv
+    # 553461
+    ```
+
+!!! question "How many occurence of number `2` exists in `nat2021.csv` file?"
+
+??? example "Click to show the solution"  
+    ```bash
+    grep -o 2 nat2021.csv | wc -l
+    # -o makes grep print each match on a new line.
+    # wc -l counts the number of lines, which equals the total occurrences
+    # 871258
+    ```
 
 !!! question "Select all line related of the year 2001 in `nat2021.csv` file"
 
+Pay attention that value 2021 may occur in 2 different columns: `annais` (column3) and `nombre` (column4)
+
 ??? example "Click to show the solution"  
     ```bash
     grep ";2021;" nat2021.csv
     ```
 
-!!! question "How many names have been provided in 2021?"
+!!! question "How many diffent names have been provided in 2021 (_PRENOMS_RARES count for 1)?"
 
 ??? example "Click to show the solution"  
     ```bash
@@ -29,19 +63,19 @@ You should now have a file called `nat2021.csv` in your working directory.
     # result: 13501
     ```
 
-!!! question "Is there more diversity in male or female names in 2021"?
+!!! question "Is there more diversity in male or female names in 2021?"
 
 ??? example "Click to show the solution"  
     ```bash
-    # female
-    grep ";2021;" nat2021.csv | grep "^2" | wc -l
+    # female - field one contains male female information (-f 1) then count female (grep -c 2) 
+    grep ";2021;" nat2021.csv | cut -d ';'  -f 1 | grep -c 2
     # result: 7112
-    # male
-    grep ";2021;" nat2021.csv | grep "^1" | wc -l
+    # male - field one contains male female information (-f 1) then count male (grep -c 1) 
+    grep ";2021;" nat2021.csv | cut -d ';'  -f 1 | grep -c 1
     # result: 6389
     ```
 
-!!! question "How many person are called PARIS in 2021"?
+!!! question "How many person are called PARIS in 2021?"
 
 ??? example "Click to show the solution"  
     ```bash
@@ -52,7 +86,7 @@ You should now have a file called `nat2021.csv` in your working directory.
 
 The rare name ([see here for documentation](https://www.insee.fr/fr/statistiques/2540004?sommaire=4767262#documentation)) are set as `_PRENOMS_RARES`.
 
-!!! question "Could you find all rare name ? Do you see any pattern?"
+!!! question "Could you find the number of rare name per year ? Do you see any pattern?"
 
 ??? example "Click to show the solution"  
     ```bash
@@ -61,7 +95,7 @@ The rare name ([see here for documentation](https://www.insee.fr/fr/statistiques
     People tends to provide more and more rare names.
 
 
-!!! question "What year was the most prolific fot the name ZINEDINE?"
+!!! question "What year was the most prolific year for the name ZINEDINE?"
 
 ??? example "Click to show the solution"  
     ```bash
@@ -71,20 +105,3 @@ The rare name ([see here for documentation](https://www.insee.fr/fr/statistiques
     ```
 
 
-
-## Redirecting an output (>)
-
-You can redirect a result and store it in a file thanks to the `>` redirection:  
-`command > filename`
-
-!!! question "Save all the names from 2005 in a dedicated file?"
-
-??? example "Click to show the solution"  
-    ```bash
-    # command
-    grep ";2025;" nat2021.csv > names2005.txt
-    ```
-
-
-
-

docs/pages/bash_manip/bash_manip-4-awk copy.md

-# Extracting from files
-
-To do this exercice you will need to download French First name data from "Institut national de la statistique
-et des études économiques"
-
-```bash
-wget https://www.insee.fr/fr/statistiques/fichier/2540004/nat2021_csv.zip
-unzip nat2021_csv.zip 
-```
-
-You should now have a file called `nat2021.csv` in your working directory.
-
-
-## Filtering a file (awk)
-
-
-
-## Replacing patterns (sed)
-
-
-
-
-

docs/pages/bash_manip/bash_manip-4-awk.md

+# AWK
+
+## setup
+
+??? quote "First click and follow the instructions below only if you start the course at this stage! Otherwise skip this step!"
+    {%
+    include-markdown "pages/bash_manip/bash_manip-0-setup.md"
+    %}
+
+
+## Filtering a file (awk)
+
+
+
+## Replacing patterns (sed)
+
+
+
+
+

docs/pages/bash_manip/bash_manip-4-regex.md

+# Regular Expression
+
+Regular expressions (regex) are sequences of characters that define a search pattern. They are used for pattern matching within strings.  
+It is a powerful tools for text processing and can be used in various command-line utilities like `grep`, `sed`, and `awk` to search, match, and manipulate text.
+
+## Regular Expression Summary
+
+| Symbol | Description | Example | Matches |
+|--------|-------------|---------|---------|
+| `.`    | Any single character except newline | `a.b` | `aab`, `acb`, `a1b` |
+| `^`    | Start of a line | `^abc` | `abc` at the start of a line |
+| `$`    | End of a line | `abc$` | `abc` at the end of a line |
+| `*`    | Zero or more of the preceding element | `ab*c` | `ac`, `abc`, `abbc` |
+| `+`    | One or more of the preceding element | `ab+c` | `abc`, `abbc` |
+| `?`    | Zero or one of the preceding element | `ab?c` | `ac`, `abc` |
+| `{n}`  | Exactly n of the preceding element | `a{3}` | `aaa` |
+| `{n,}` | n or more of the preceding element | `a{2,}` | `aa`, `aaa`, `aaaa` |
+| `{n,m}`| Between n and m of the preceding element | `a{2,3}` | `aa`, `aaa` |
+| `[]`   | Any one of the characters within the brackets | `[abc]` | `a`, `b`, `c` |
+| `[^]`  | Any one character not within the brackets | `[^abc]` | Any character except `a`, `b`, `c` |
+| `|`    | Alternation (OR) | `a|b` | `a`, `b` |
+| `()`   | Grouping | `(abc)` | `abc` |
+| `\d`   | Any digit (0-9) | `\d` | `0`, `1`, `2`, ..., `9` |
+| `\D`   | Any non-digit | `\D` | Any character except `0-9` |
+| `\w`   | Any word character (alphanumeric + underscore) | `\w` | `a`, `b`, `1`, `_` |
+| `\W`   | Any non-word character | `\W` | Any character except `a-z`, `A-Z`, `0-9`, `_` |
+| `\s`   | Any whitespace character | `\s` | Space, tab, newline |
+| `\S`   | Any non-whitespace character | `\S` | Any character except space, tab, newline |
+
+It is possible to use POSIX character classes:  
+
+| Symbol | Description |
+|--------|-------------|
+| [:alnum:] | equivqlent to A-Za-z0-9 |
+| [:alpha:] | equivalent to A-Za-z |
+| [:blank:] | equivalent to space or tab |
+| [:digit:] | equivalent to 0-9 |
+
+
+!!! Warning
+    Do not confound with **Globbing** (Pathname expansion) used to match filename!
+    `?`  Any single character  
+    `*`  Zero or more characters
+    `[]` Specify a range. Any character of the range or none of them using `!` inside the bracket.
+    `{term1,term2}`  Specify a list of terms separated by commas and each term must be a name or a wildcard.
+    `{term1..term2}` Called brace expansion, this syntax expands all the terms between term1 and term2 (Letters or Integers).
\ No newline at end of file

docs/pages/bash_manip/bash_manip-5-grep2.md

+# GREP (part2)
+
+## setup
+
+??? quote "First click and follow the instructions below only if you start the course at this stage! Otherwise skip this step!"
+    {%
+    include-markdown "pages/bash_manip/bash_manip-0-setup.md"
+    %}
+
+
+## Searching patterns (grep)
+
+!!! question "Select all line related of the year 2001 in `nat2021.csv` file"
+
+??? example "Click to show the solution"  
+    ```bash
+    grep ";2021;" nat2021.csv
+    ```
+
+!!! question "How many names have been provided in 2021?"
+
+??? example "Click to show the solution"  
+    ```bash
+    grep ";2021;" nat2021.csv | wc -l
+    # result: 13501
+    ```
+
+!!! question "Is there more diversity in male or female names in 2021"?
+
+??? example "Click to show the solution"  
+    ```bash
+    # female
+    grep ";2021;" nat2021.csv | grep "^2" | wc -l
+    # result: 7112
+    # male
+    grep ";2021;" nat2021.csv | grep "^1" | wc -l
+    # result: 6389
+    ```
+
+!!! question "How many person are called PARIS in 2021"?
+
+??? example "Click to show the solution"  
+    ```bash
+    # female
+    grep "PARIS;2021;" nat2021.csv
+    # result 16 (5 male and 11 female)
+    ```
+
+The rare name ([see here for documentation](https://www.insee.fr/fr/statistiques/2540004?sommaire=4767262#documentation)) are set as `_PRENOMS_RARES`.
+
+!!! question "Could you find all rare name ? Do you see any pattern?"
+
+??? example "Click to show the solution"  
+    ```bash
+    grep ";_PRENOMS_RARES;" nat2021.csv
+    ```
+    People tends to provide more and more rare names.
+
+
+!!! question "What year was the most prolific fot the name ZINEDINE?"
+
+??? example "Click to show the solution"  
+    ```bash
+    # command
+    grep ";ZINEDINE;" nat2021.csv | sort -n -t ';' -k4
+    # result: 1998
+    ```
+
+
+You can redirect a result and store it in a file thanks to the `>` redirection:  
+`command > filename`
+
+!!! question "Select all the names from 2005 in a dedicated file?"
+
+??? example "Click to show the solution"  
+    ```bash
+    # command
+    grep ";2005;" nat2021.csv 
+    ```
+
+
+
+

docs/pages/cheat_sheet/bash/bash.md

@@ -5,4 +5,9 @@
 <iframe id="iframepdf" src="../Bash_cheat_sheet_level2.pdf" frameborder="0" width="640" height="480" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> 
 </br>
 # level 3 - Programming
-<iframe id="iframepdf" src="../Bash_cheat_sheet_level3.pdf" frameborder="0" width="640" height="480" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> 
\ No newline at end of file
+<iframe id="iframepdf" src="../Bash_cheat_sheet_level3.pdf" frameborder="0" width="640" height="480" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> 
+
+# Interesting ressources
+
+* [Software carpentry](https://swcarpentry.github.io/shell-novice/index.html)
+* [gentoo linux](https://devmanual.gentoo.org/tools-reference/bash/index.html)
\ No newline at end of file

mkdocs.yml

@@ -107,8 +107,9 @@ nav:
         - Course overview: pages/bash_manip/bash_manip-0-overview.md
         - Introduction: pages/bash_manip/bash_manip-1-introduction.md
         - Basic commands: pages/bash_manip/bash_manip-2-basics.md
-        - RegEx: pages/bash_manip/bash_manip-3-grep.md
-        - Grep: pages/bash_manip/bash_manip-3-grep.md
+        - Grep (part1): pages/bash_manip/bash_manip-3-grep.md
+        - Regular expressions: pages/bash_manip/bash_manip-4-regex.md
+        - Grep (part2): pages/bash_manip/bash_manip-5-grep2.md
         - Awk: pages/bash_manip/bash_manip-4-awk.md
         - Sed: pages/bash_manip/bash_manip-5-sed.md
     - Bash scripting: