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sed script - print the line number along with the line

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# 1  
Old 01-30-2011
sed script - print the line number along with the line
Hi,
I want to print the line number with the pattern of the line on a same line using multi-patterns in sed.
But i don't know how to do it.
For example, I have a file

abc
def
ghi

I want to print

1 abc
2 def
3 ghi

I know how to write it one line code, but i don't know how to put it in sed script
Does anyone know how to do it?
Thanks
# 2  
Old 01-30-2011
Try:
Code:
cat -n infile

# 3  
Old 01-30-2011
Hi,
I mean how to use sed and put it in the sed script
# 4  
Old 01-30-2011
Code:
sed = infile | sed 'N;s/\n/ /'

# 5  
Old 01-30-2011
Do you know how to put it in a sed script?
I already knew how to use pipeline
# 6  
Old 01-30-2011
I do not know what you mean...
# 7  
Old 01-30-2011
Code:
NAME
     sed - stream editor

SYNOPSIS
     /usr/bin/sed [-n] script [file...]

     /usr/bin/sed   [-n]    [-e script]...    [-f script_file]...
     [file...]
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