text-edit-half-high

!/bin/bash
# Example:

# high.txt
# first row ignored
# 1
# empty
# 2
# empty
# 3
# empty
# 4
# empty

# result-half-high.txt
# 1
# 2
# 3
# 4

LASTLINEONE="0"
LASTLINEALL="0"
TEXTONE="high.txt"
RESULT="result-half-high.txt"
STRINGONE=""
LINE="1"
if [ -f "$TEXTONE" ]
then
LASTLINEONE=`cat "$TEXTONE" | wc -l`
else
echo ""
echo "high.txt not found. Exiting."
echo ""
exit
fi
LASTLINEALL=$((LASTLINEONE+1))
rm "$RESULT"
# Ignoring value LINE="1" because that is the column description
LINE="2"
while [ "$LINE" -lt "$LASTLINEALL" ]
do
# TEXTONE="high.txt"
# RESULT="result-half-high.txt"
# First row - item
STRINGONE=`cat "$TEXTONE" | sed -n "$LINE"p`
# Second row - nothing
LINE=$((LINE+1))
# Key in the results for this pass
echo "$STRINGONE" >> "$RESULT"
# Make ready for the first row next time
LINE=$((LINE+1))
done
echo ""
echo "Done."
echo ""