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unique inside array

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# 1  
Old 05-11-2012
unique inside array
I have a file
Code:
root@server [~]# cat /root/list12
11.22.33.44
22.33.44.55
33.44.55.66
33.44.55.66
33.44.55.66

I try to pass to array and display unique.
Code:
root@server[~]# cat /root/test12.sh
#!/bin/bash

#delcare array badips and accumulate values to array elemenrs
badips=( $( cat /root/list12 | while read entry
do
                echo -e "\n $entry"

done ) )

echo ${badips[@]/%/ --- }

But output is
Code:
root@server [~]# /root/test12.sh
11.22.33.44 --- 22.33.44.55 --- 33.44.55.66 --- 33.44.55.66 --- 33.44.55.66 ---

I need uniq entire only. No repitition.

Desired output.

Code:
11.22.33.44 --- 22.33.44.55 --- 33.44.55.66

Last edited by Scrutinizer; 05-11-2012 at 05:23 AM.. Reason: formatting
# 2  
Old 05-11-2012
Hi

Code:
uniq /root/list12 | sed -e :a -e 'N;s/\n/ -- /;ta'

Guru.
This User Gave Thanks to guruprasadpr For This Post:
anil510
# 3  
Old 05-11-2012
uniq needs sorted input.

Code:
awk 'END{printf RS} !A[$1]++' ORS=" --- " infile

This User Gave Thanks to Scrutinizer For This Post:
anil510
# 4  
Old 05-11-2012
Code:
awk '!a[$1]++' infile | xargs | sed 's/ / --- /g'

# 5  
Old 05-11-2012
Thanks guys
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