How to count dup records in file?


 
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# 1  
Old 10-21-2013
How to count dup records in file?

Hi Gurus,

I need to count the duplicate records in file
file
Code:
abc
abc
def
ghi
ghi
jkl

I want to get below result:
Code:
abc ,2
abc, 2
def ,1
ghi ,2
ghi, 2
jkl ,1

or
Code:
abc ,2 
def ,1
ghi,2
jkl,1

Thanks in advance
# 2  
Old 10-21-2013
Code:
cat <file> | uniq -c | sort -nr

This User Gave Thanks to port43 For This Post:
# 3  
Old 10-21-2013
Your example file is sorted. If this is true, and you don't mind the output format
Code:
uniq -c file

awk can do the same and format the output
Code:
awk '(NR>1 && $0!=prev) {print prev,c; c=0} {c++; prev=$0} END {if (NR>1) print prev,c}' file

Instead of prev,c you can do prev", "c.
This User Gave Thanks to MadeInGermany For This Post:
# 4  
Old 10-21-2013
try this

cat infile | awk " {rec[$1]=$1;c[$1]++} END { for (a in rec) print rec[a],c[a]} "
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