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Remove Duplicate Lines in File

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# 1  
Old 07-25-2005
Remove Duplicate Lines in File
I am doing KSH script to remove duplicate lines in a file. Let say the file has format below.

FileA

Code:
1253-6856
3101-4011
1827-1356
1822-1157
1822-1157
1000-1410
1000-1410
1822-1231
1822-1231
3101-4011
1822-1157
1822-1231


and I want to simply it with no duplicate line as file below.

FileA

Code:
1253-6856
3101-4011
1827-1356
1822-1157
1000-1410
1822-1231


How can I do that in KSH?
# 2  
Old 07-25-2005
Try the following command:

Code:
awk '!x[$0]++' file > file.new

Nir
# 3  
Old 07-25-2005
Thanks Nir! This is awesome!
# 4  
Old 07-25-2005
uniq file > file.new

If the files are not already sorted then:

sort file | uniq > file.new
# 5  
Old 07-26-2005
Code:
sort -u filename > filename.new

These 2 Users Gave Thanks to ssk For This Post:
figaro nitrobass24
# 6  
Old 01-12-2006
Thanks
Thanks ssk!

Your solution is so simple and so effective!


Thanks,

Sumit Garg
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