- Download the mapping files that were created for converting data to Unicode from Download "Geez-1.zip" and extract the zip file
- Download TECkit which is a low-level toolkit intended to be used by other applications that need to perform encoding conversions from http://scripts.sil.org/TECkitDownloads for the platform/operating system you have and install it. You can find the installation notes from the same link.
- Go to command line/terminal/command prompt and follow instructions from Download "TECkitversion2_doc_pdf.pdf"
What I did is, I extracted the mapping files in 'Desktop' and put the file with Geez-1 font (to be converted) in 'Desktop' as well. Then, I run the following command in terminal.
txtconv -t Ge\'ez-1.tec -i ToBeConverted.doc -o Converted.txt
Note: I have seen that converting .doc (word documents) works better than .txt (plain text files).