Small BASH function to enter a diary entry into a timestamped diary file (one file per day)

diary.sh

# This bash function makes a diary command.
# All diary entries are kept in $HOME/diary. Each diary file represents a day
# and the filename is YYYYMMDD.txt
# Each diary entry is preceded by a timestamp. If the diary file doesn't exist,
# the command first makes the diary file, then it appends the timestamp. If the
# diary file exists, then it only appends the timestamp.
# The diary file is edited by vim.
diary () {
	filename=$HOME/diary/`date +"%Y%m%d.txt"`;
	if [ ! -f $filename ]; then
			date +"%m/%d/%Y%n%n%l:%M %p%n%n" > $filename
	else
			date +"%n%l:%M %p%n%n" >> $filename
	fi
	vim + $filename
	clear
}