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grep and delete 2nd duplicated of txt... -part2

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# 8  
Old 01-19-2007
Slight modification to Ygor script
Code:
awk -v str="orange" '++a[$0]!=2 || $0 != str' file

# 9  
Old 01-19-2007
Quote:
Originally Posted by anbu23
Slight modification to Ygor script
Code:
awk -v str="orange" '++a[$0]!=2 || $0 != str' file

look like not work...see below error:

awk -v str="apple" '++a[$0]!=2 || $0 != str' list1.txt
awk: syntax error near line 1
awk: bailing out near line 1
# 10  
Old 01-19-2007
Can you try with nawk?
# 11  
Old 01-19-2007
but this awk command will remove only 2nd occurance anbu not all the duplicate only one time when it reads 2nd occurance.
# 12  
Old 01-19-2007
Quote:
Originally Posted by Krrishv
but this awk command will remove only 2nd occurance anbu not all the duplicate only one time when it reads 2nd occurance.
In one of the reply Happyv has asked to remove only the second duplicate of particular string
Quote:
Originally Posted by happyv
BUT can I specify any word to delete? such as orange..and it can delete the 2nd duplicated of "orange" only
# 13  
Old 01-19-2007
Quote:
Originally Posted by anbu23
Can you try with nawk?
GREAT...GREAT...GREAT...!I testing a few times...and look the result very good...anyway..I need to test a few more...
By the way, thank you all.. Smilie
# 14  
Old 01-19-2007
what is the different nawk and awk?

is it different system? how can I check my system using which kind of language...?
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