Emergency UNIX and Linux Support

set -A array $(</tmp/inputfile) #reading file in array

c= ${#array[*]} #the no. of elements in the array
 
i=1
 
while [ $i -lt $c ]
do
   j=`expr $i +1`
   v1=`echo ${array[$i]}|cut -d" " -f1`
   v2=`echo ${array[$j]}|cut -d" " -f1`
   
   if [ $v1 = $v2 ]
       then
             array[$i]=`echo F.${array[$i]}`
   fi
   i=`expr $i +1`
done
 
i=1
 
while [ $i -le $c ]
do
   x=`echo ${array[$i]|cut -c1`
   
   if [ $x -ne "F" ]
     then
           `echo ${array[$i]}>>newfile`
   fi
done
 
`cat newfile`

heres a python code
#code:
#!/usr/bin/env python
present_line=[]
fob = open('question.temp', 'r')
previous_line = []
while 1:

present_line = []
linea = fob.readline()
present_line = linea.split()
try:
if (present_line[0]==previous_line[0]):
print ' '.join(previous_line)

except:
pass

previous_line = present_line
if not present_line : break

fob.close()