It's pretty basic stuff, I guess but I couldn't figure out how to do it.
What I want to do is very simple.
By using Jekyll plugin system, I want to extend Liquid tag to return filename of post.
{{% page.filename %}}
will parse to something like
jekyll-plugin.markdown
Well, it's not exactly the method you're looking for, but you could just include the filename in the yaml headers for the file. It's probably a bad choice for files that you'll move around and tweak, but since there don't appear to be a wealth of answers pouring forth, maybe it's good enough.
I think I got it. Here I´m checking if a file has a line that contains "Filename:". If not, it places it on the second line, with the variable of the filename.
#!/bin/bash
for file in $(ls *.md)
do
if grep -Fq "filename: " $file
then
# code if not found
echo "File: $file already processed"
else
# code if found
echo "Adding the line on file: $file"
awk -v n=2 -v s="filename: $file" 'NR == n {print s} {print}' $file > tmp.txt
mv tmp.txt $file
fi
done
