Fix broken urls, closes #42

content/misc/associative_arrays_in_bash.md

@@ -6,26 +6,25 @@ tags:
     - TIL
 ---
 
-One of my favorite pastimes these days is to set BingChat to creative mode, ask it to
-teach me a trick about topic X, and then write a short blog post about it to reinforce
-my understanding. Some of the things it comes up with are absolutely delightful. In the
-spirit of that, I asked it *to teach me a Shell trick that I can use to mimic maps or
-dictionaries in a shell environment*. I didn't even know what I was expecting.
+One of my favorite pastimes these days is to set BingChat to creative mode, ask it to teach
+me a trick about topic X, and then write a short blog post about it to reinforce my
+understanding. Some of the things it comes up with are absolutely delightful. In the spirit
+of that, I asked it *to teach me a Shell trick that I can use to mimic maps or dictionaries
+in a shell environment*. I didn't even know what I was expecting.
 
-It didn't disappoint and introduced me to the idea of associative arrays in Bash. This
-data structure is basically the Bash equivalent of a map.
+It didn't disappoint and introduced me to the idea of associative arrays in Bash. This data
+structure is basically the Bash equivalent of a map.
 
-First, we have our usual arrays which are containers that can store multiple values,
-indexed by numbers. Associative arrays are similar, but they use strings as keys instead
-of numbers. For example, if you want to store the names of some fruits in a regular
-array, you can use:
+First, we have our usual arrays which are containers that can store multiple values, indexed
+by numbers. Associative arrays are similar, but they use strings as keys instead of numbers.
+For example, if you want to store the names of some fruits in a regular array, you can use:
 
 ```bash
 fruits=(apple banana cherry)
 ```
 
-This will create an array called fruits with three elements. You can access the elements
-by using the index number inside brackets, such as:
+This will create an array called fruits with three elements. You can access the elements by
+using the index number inside brackets, such as:
 
 ```bash
 echo ${fruits[0]}
@@ -49,8 +48,7 @@ This will print:
 banana cherry
 ```
 
-Moreover, you can use `*` or `@` to get all the elements of
-the array, such as:
+Moreover, you can use `*` or `@` to get all the elements of the array, such as:
 
 ```bash
 echo ${fruits[*]}
@@ -63,8 +61,8 @@ apple banana cherry
 ```
 
 Associative arrays are declared with the `declare -A` command, and then assigned values
-using the `=` operator and brackets. For example, if you want to store the prices of
-some fruits in an associative array, you can use:
+using the `=` operator and brackets. For example, if you want to store the prices of some
+fruits in an associative array, you can use:
 
 ```bash
 declare -A prices
@@ -73,8 +71,8 @@ prices[banana]=0.50
 prices[cherry]=2.00
 ```
 
-This will create an associative array called `prices` with three key-value pairs. You
-can access the values by using the keys inside brackets, such as:
+This will create an associative array called `prices` with three key-value pairs. You can
+access the values by using the keys inside brackets, such as:
 
 ```bash
 echo ${prices[apple]}
@@ -87,8 +85,8 @@ This will print:
 ```
 
 Similar to regular arrays, you can use `*` or `@` to get all the keys or values of the
-associative array. Run the following command to get all the keys of the `prices`
-associative array:
+associative array. Run the following command to get all the keys of the `prices` associative
+array:
 
 ```bash
 echo ${!prices[*]}
@@ -112,10 +110,9 @@ This returns:
 1.00 0.50 2.00
 ```
 
-Arrays and associative arrays can be useful when you want to store and manipulate
-complex data structures in bash. You can use them to perform arithmetic operations,
-string operations, or loop over them with for or while commands. For example, you can
-use:
+Arrays and associative arrays can be useful when you want to store and manipulate complex
+data structures in bash. You can use them to perform arithmetic operations, string
+operations, or loop over them with for or while commands. For example, you can use:
 
 ```bash
 for fruit in ${!prices[*]}; do
@@ -124,10 +121,10 @@ done
 ```
 
 In the above snippet, we iterate through the keys of `prices` in a `for` loop. The
-`${!prices[*]}` notation expands to a list of all the keys in the `prices` array. Inside
-the loop, we print the key-value pairs, where `$fruit` represents the current key and
-`${prices[$fruit]}` represents the corresponding value. So in each iteration, the
-snippet will output the name of each fruit along with its corresponding price.
+`${!prices[*]}` notation expands to a list of all the keys in the `prices` array. Inside the
+loop, we print the key-value pairs, where `$fruit` represents the current key and
+`${prices[$fruit]}` represents the corresponding value. So in each iteration, the snippet
+will output the name of each fruit along with its corresponding price.
 
 Running the snippet will print:
 
@@ -188,23 +185,23 @@ done downloading rfcs
 ======================
 ```
 
-The script begins by declaring an associative array called `rfc_urls`. This array serves
-as a convenient way to keep track of the RFCs we want to download. Each key in the array
-represents a unique identifier for an RFC, while the corresponding value holds the
-complete URL to download that specific RFC.
+The script begins by declaring an associative array called `rfc_urls`. This array serves as
+a convenient way to keep track of the RFCs we want to download. Each key in the array
+represents a unique identifier for an RFC, while the corresponding value holds the complete
+URL to download that specific RFC.
 
-Next, we set the `base_url` variable to `https://www.rfc-editor.org/rfc`, which will be
-used as the base URL for all RFC downloads.
+Next, we set the `base_url` variable to `https://www.rfc-editor.org/rfc`, which will be used
+as the base URL for all RFC downloads.
 
-Inside a loop that iterates over the keys of the `rfc_urls` array, we retrieve the URL
-value associated with each key. To provide a progress update, we echo a message
-indicating the RFC being downloaded.
+Inside a loop that iterates over the keys of the `rfc_urls` array, we retrieve the URL value
+associated with each key. To provide a progress update, we echo a message indicating the RFC
+being downloaded.
 
-Using the `curl` command with the options `-OJLs`, we initiate the download process.
-The `-O` flag ensures that the remote file is saved with its original filename, while
-the `-J` flag takes advantage of the `Content-Disposition` header in the HTTP response
-to determine the filename. We include the `-L` flag to follow redirects, and the `-s`
-flag to silence curl's progress output.
+Using the `curl` command with the options `-OJLs`, we initiate the download process. The
+`-O` flag ensures that the remote file is saved with its original filename, while the `-J`
+flag takes advantage of the `Content-Disposition` header in the HTTP response to determine
+the filename. We include the `-L` flag to follow redirects, and the `-s` flag to silence
+curl's progress output.
 
 ## Resources