Shell Programming and Scripting

#!/bin/bash 
# reads from the $ips file and assigns to $MYARRAY
#IFS =";" split the line after the ;
#set -- $array save the each row of the line in $1 $2 $3 $4 ....

myfile="Comprasion.txt"
ln=`wc -l $myfile|awk '{print $1}'`
i=1
#echo "$ln"
declare -a sgs
for ((i==1; i<=$ln; i++)); do 
         line=`awk "NR==$i" $myfile`
         #echo "$line"
         declare -a row
         linarray=(`echo ${line// / }`);
         #echo "${#linarray[*]}" # OK.
         #echo "${#linarray[*]}" # OK.
         row=(`echo ${#linarray[*]}`);
         echo "*********"
         #echo "$row"
         r=1
         for ((r==1;r<=$row;r++)); do 
            #echo "variable $i $r"; # OK.
            sgs[${i},${r}]=(`echo ${linearray[$r]}`);
            var=${sgs[${i},${r}]};
         echo "$var";
         done
         #echo "$i";
done

  Lon    Lat      1990    1991   1992   1993
-10.75  51.25    58.0    51.0    52.6    55.0 #st1
-9.25  40.75    58.0    51.0    52.6    55.0   #st2
-8.25  54.25    74.5    82.2    67.6    67.8   #st3
-7.25  51.75    57.0    55.6    54.8    54.8   #st4
-7.25  51.75    57.0    55.6    54.8    54.8   #st5
-7.25  54.25    79.2    85.2    68.6    74.8    #st6
-6.75  52.75    58.5    66.8    60.8    63.6    #st7
-1.25  50.75    66.5    70.2    63.0    57.0    #st8
-0.75  48.75    67.5    70.0    64.8    58.4    #st9
2.75  50.75    79.5    82.8    74.4    63.2      #st10

1990 58.0
1991 51.0
1992 52.6
1993 55.0
e
1990 58.0
1991 51.0
1992 52.6
1993 55.0
e
1990 74.5
1991 82.2
1992 67.6
1993 67.8
e
end etc.

awk 'NR == 1 {
  n = split($0, y)
  next
  }
{
  for (i = 2; ++i <= NF;)
    print y[i], $i
  print "e"
  }' infile

awk 'NR == 1 {
  n = split($0, y)
  next
  }
{
  for (i = 2; ++i < NF;)
    print y[i], $i
  print "e"
  }' infile