Shell Programming and Scripting

awk '{for(i=1;i<=NF;i++){printf("%s ", $i);if(i%3==0){print ""}}}' $FILENAME >> $REPORT

#!/bin/bash -

# @(#) s1       Demonstrate extraction of coordinates.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version "=o" $(_eat $0 $1) grep
set -o nounset
echo

FILE=${1-data1}
rm output
cat >output <<'EOF'
This is some data that already appears on file output.
We will be appending to this.

EOF

echo " Data file $FILE:"
cat $FILE

grep "[0-9\.\-].* [0-9\.\-].* [0-9\.\-].*" $FILE >>output

echo
echo " Output file:"
cat output

exit 0

% ./s1

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash 2.05b.0
grep (GNU grep) 2.5.1

 Data file data1:
This is a data file.
0.1 0.1 0.1
2 2 2
0.03 0.03 0.03
...
We want to extract the lines with coordinates.
4 5 6
0.4 0.5 0.6
40. 50. 60.
End of the data.

 Output file:
This is some data that already appears on file output.
We will be appending to this.

0.1 0.1 0.1
2 2 2
0.03 0.03 0.03
4 5 6
0.4 0.5 0.6
40. 50. 60.