Shell Programming and Scripting

[groups]
abc = 
abc_read =
test =
test_write=
developer=
developer_read=
bac_read=
 bac=
#######################
[abc:/bcd/cde]
@test_write = rw
[bcd:/xyz/yzx]
@test= rw
################
[lmn:/bcd/cde]
  @test_write = rw
 [lmn:/xyz/yzx]
  @test= rw
############################

[groups]

abc = 
 abc_read =

bac_read=
  bac=

developer=
 developer_read=

test =
 test_write=

#######################################
[abc:/bcd/cde]
@test_write = rw

[bcd:/xyz/yzx]
@test= rw

################
[lmn:/bcd/cde]
 @test_write = rw

[lmn:/xyz/yzx]
 @test= rw

############################

whie read line
 echo $line | grep "^\#"
 if [ "$?" ne "0" ]
 then
  echo $line >> /tmp/file
 else
  sort -u /tmp/file
  rm /tmp/file
  echo "################################"
 fi
done < input_file

#######################
[groups]
abc =
abc_read =
bac=
bac_read=
developer=
developer_read=
test =
test_write=
################################
################
@test= rw
@test_write = rw
[abc:/bcd/cde]
[bcd:/xyz/yzx]
################################
############################
@test= rw
@test_write = rw
[lmn:/bcd/cde]
[lmn:/xyz/yzx]
################################

[abc:/bcd/cde]
@test_write = rw  
[bcd:/xyz/yzx]
@test= rw

    awk '{
if($0~/^\[/)
{
    n =asort(arr)
    for(i=1;i<=n;i++)
    printf "%s\n",arr[i] 
    delete arr
    if(temp!=""){print temp}
    print $0
    temp=""
    
}
else if($0!~/^\#/)
{
    arr[substr($0,0,3)]=arr[substr($0,0,3)]$0"\n ";
}
else
{
    temp=$0
}
}

END{n =asort(arr);for(i=1;i<=n;i++){printf "%s\n",arr[i] };print temp}' test.txt