Shell Programming and Scripting

0 A
1 B
2 C
3 D
0 A1
1 B1
2 C1
3 D1
0 A2
1 B2
2 C2
3 D2

A B C D
A1 B1 C1 D1
A2 B2 C2 D2

awk '{print $2}' file | paste -d" " - - - -

sed -n 's/[0-3]//;s/ //;p' inputfile | awk -v ORS= '{print $0" ";if(NR%4==0){print "\n"}}'

0   A
1 B
2 C
-  -
-  -
-  -
N XX
0 A1
1 B1
2 C1
-  -
-  -
-  -
N XX1
0  A2
1  B2
2  C2
3  D3
-   -
-   -
N XX2

A  B  C  D  - - - -XX
A1 B1 C1 D1- - - -XX1
A2 B2 C2 D2    XX2
- - - - - - - - - - -  - - - - -
- - - - - -  - - - - - - - - - -

#!/usr/bin/ksh
mOutLine=""
while read mSeq mValue; do
  if [[ "${mSeq}" = "0" ]]; then
    if [[ "${mOutLine}" != "" ]]; then
      echo ${mOutLine}
      mOutLine=""
    fi
  fi
  mOutLine=${mOutLine}' '${mValue}
done < input_file
if [[ "${mOutLine}" != "" ]]; then
  echo ${mOutLine}
fi