I am relatively new to awk. This worked great! If you have time, could you briefly explain the syntax?
Also, what is the difference between your statement and
Thanks again! This statement was very concise. Just brilliant!
awk 'NR==1; ---> prints your header in line number 1
NR>1{A[$2]=$0}---> line number is greater then 1
NR>1{ then Array A with index of column of $2 will hold line $0 that is A[$2]=$0
END{for(i in A)print A[i]}' --> In END block printing array contents
Line!=$1$2 --> if line is not equal to column 1 and column2 then print line print, this will work for first line since Line is not set, after printing variable Line will be assigned the value of $2 Line=$2, and again check if for 2nd line.
--edit--
your code will not work because it just considers previous line pattern, in between if there is any duplicate it will get printed
and awk '!arr[$2]++' this prints only first found value from field 2 $2this is the reason why rearrange is not getting printed
Yoda solution keeps track of rearrange in field1, my solution assumes it's sorted so it save last found value, if file is not sorted I think you should go through Yoda's solution.
Last edited by Akshay Hegde; 12-11-2013 at 03:12 PM..
Reason: typo...
Can some one provide me a shell script.
I have file with many columns and many rows. need to sort the first column and then remove the duplicates records if exists.. finally print the full data with first coulm as unique.
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Input.txt
1234,0,x
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HWUSI-EAS000_29:1:105 + chr5 76654650 AATTGGAA HHHHG
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aaaaaa|a12|45|56
abbbbaaa|a12|45|56
bbaabb|b1|51|45
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Description of input file I have:
-------------------------
1) CSV with double quotes for string fields.
2) Some string fields have Comma as part of field value.
3) Have Duplicate lines
4) Have 200 columns/fields
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Description of output file I need:... (4 Replies)
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I have a file with fields like below:
A;XYZ;102345;222
B;XYZ;123243;333
C;ABC;234234;444
D;MNO;103345;222
E;DEF;124243;333
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C;ABC;234234;444
D;MNO;103345;222
E;DEF;124243;333
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I thought of using
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ESR1 PA156 leflunomide PA450192 leflunomide
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12345a rerere.rerere len=23
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01,1,102319,0,0,70,26,U,1,331,000000113200000011920000001212
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