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Shell Programming and Scripting

how to add line numbers in text file

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# 1  
Old 01-31-2009
how to add line numbers in text file
Hi all

How to add line numbers in text file..


ex
abcd
cdef


result
1. abcd
2. cdef


thx in advance
# 2  
Old 01-31-2009
cat -n inputfile > result
# 3  
Old 01-31-2009
Or:

Code:
nl infile

To match your example format:

Code:
nl -w1 -s.\  infile

# 4  
Old 01-31-2009
Try awk
Code:
awk '{printf "%s.\t%s\n",NR,$0}' file

# 5  
Old 01-31-2009
cat <inputfile> | grep -n '' > <outputfile>

Note: grep -n '' (its single quotes without scpace in between)
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