Question

I am new to this shell-script programming so need your help to write a code which is efficient one.

Input file format :

60 00 00 00
00 90 32 20
00 00 00 00
.....

Output File format:

6000 0000 0090 3220 0000 0000 0000 0000
0000 0000 0000 0001 0000 0000 0000 0000 
......

I want to convert input file to output file and vice-versa so need code for both sides.

Code should be in linux shell script using filters like awk,sed,grep,etc using pipe and linux redirection operators…

Limitation

A single line would be best otherwise as much lesser no. of lines as possible

Answer 1

Here’s a rather simple solution to this problem.

while read line; do
   block1=`echo $line | awk '{ print $1$2 }'`
   block2=`echo $line | awk '{ print $3$4 }'`
   echo "$block1 $block2 " >> outputfile
done < inputfile

I’m not sure if you need to insert a new line after 8 blocks, but if so, a regex like s/(.*){32}/$1\n/g should do the trick.