Shell Programming and Scripting

Hi people. I am new to shell scripting, so I need a little help. I want to create a script named that takes an argument as a file, Read the input file and look for occurrences of the current username (say abc.xyz) who is executing the script. On finding an occurrence of the username take that line and append it to a file and display a line number and a bracket against the saved line. WITHOUT USING SED OR AWK

for eg: the newly created file should look similar to this:
1) PWD=/home/abc.xyz
2) USER=abc.xyz
3) ... abc.xyz
4)..

i have created a script that is doing just about the same thing.

echo "Precisely Enter the file path";
read filename;

varible=$(whoami);

grep -n $varible $filename >> Userfile;

more Userfile;



but the output of the file is coming as (obviously coz of -n)
9:jhhf=/kjsd/abc.xyz
14:var/spool/mail/abc.xyz
15:/home/abc.xyz
21:/home/abc.xyz
23:abc.xyz

I BASICALLY WANT TO REORDER THE OUTPUT IN A SEQUENCE AS

1)
2)
3)
4)

any help would really appreciated!

is there a command that does that.

Code:

echo "Precisely Enter the file path"
read filename
varible=$(whoami)

grep $varible $filename > Userfile

nl Userfile

hi jim thank you for your reply. but

1) i need to number the lines only in this format 1)... 2)... 3).... Do you think i will need to use a loop or something and then keep appending the occurrences as they come in a new file..also i cant use temp files.

2) also the nl command is only numbering the first uniqe lines in the files. i have a file that has 30 lines repeated 5 times and 'nl' is only numbering the 1st 30 lines for some reason.

cheers...