fix md images

_posts/2023-08-09-Aliexpress-DC-block-characterization.md

@@ -12,10 +12,10 @@ I recently purchased [this DC block](https://www.aliexpress.com/item/10050025758
 
 Firstly, I did a continuity check with a multimeter and it does not conduct DC, and it has a capacitance of about 2.2 nF.
 
-![Broadband performance](../assets/img/2023-08-09-Aliexpress-DC-block/IMG20230809200336.jpg)
+![Broadband performance](/assets/img/2023-08-09-Aliexpress-DC-block/IMG20230809200336.jpg)
 
 The DC block performs well over the 1 MHz to 2.9 GHz frequency range. At 2.45 GHz and 915 MHz there is an insertion loss of -0.2 dB. The response is "linear enough" for my tests. There is of course some non-linearity but it seems the loss in this frequency range varies, up to a maximum of -0.5 dB. The HP 8560A has a maximum frequency of 2.9 GHz, so I was not able to test it's performance up to the stated 6 GHz maximum frequency, quoted on the DC block's specifications.
 
-![Performance near 0 Hz](../assets/img/2023-08-09-Aliexpress-DC-block/IMG20230809200758.jpg)
+![Performance near 0 Hz](/assets/img/2023-08-09-Aliexpress-DC-block/IMG20230809200758.jpg)
 
 The -3 dB cutoff point is at ~850 kHz. The figure shows the performance from 300 kHz to 2 MHz (Note that the minimum frequency of the HP 8560A tracking generator is 300 kHz). So if you are using this block above 1 MHz, you should be fine.

post.sh

@@ -36,6 +36,6 @@ if [ -e "$filepath" ]; then
 else
     # Create the new file and add the front matter
     generate_front_matter "$user_title" > "$filepath"
-    mkdir -p "assets/img/${filename}"
+    mkdir -p "assets/img/${filename:0:31}"
     echo "File '$filename.md' created successfully in the '_posts' subdirectory."
 fi

push.sh

@@ -20,8 +20,12 @@ if [ -n "$new_posts" ]; then
     git add $new_posts
     for post in $new_posts; do
         echo $post
+
+        sed 's|](../|](/|' -i "$post" # make markdown images absolute
+
         post="${post#_posts/}"
-        git add "assets/img/${post%.md}"
+        post="${post%.md}"
+        git add "assets/img/${post:0:31}"
     done
 
     Commit the changes with the generated message