Open Vim from within a Bash shell script

Question

I want to write a Bash shell script that does the following:

1. Opens a file using Vim;
2. Writes something into the file;
3. Saves the file and exits.

Answer 1

Vim has several options:

• -c => pass ex commands. Example: vim myfile.txt -c 'wq' to force the last line of a file to be newline terminated (unless binary is set in some way by a script)
• -s => play a scriptout that was recorded with -W. For example, if your file contains ZZ, then vim myfile.txt -s the_file_containing_ZZ will do the same as previously.

Also note that, invoked as ex, vim will start in ex mode ; you can try ex my_file.txt <<< wq