How to : Find duplicate number from file? with bash

Shell Programming and Scripting
1

Thanks
AVKlinux

2

What is the format of the file?

What do you want to output? The duplicates? Only one instance of every number? The non-duplicated numbers?

3 
> cat file97
101
102
103
104
105
106
107
108
109
110
105
109
> sort -n file97 | uniq -c | awk '$1>1 {print $2}'
105
109
4

sort | uniq -d is enough

5

File

abc:2
sfhdjfhj:123
asdfsfs:2
asjkfj:123
fdsjfh:123

from above file i want to print duplicate lines...?

6

Those five lines are unique.
Or, are you referring to the number after the : delimiter?

7

yes i m refereeing the number after delimiter.

Simple example

abc:1
abd:2
aed:1

Then output should be

abc:1
aed:1

Thanks for your quick response.