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awk based script to ignore all columns from a file which contains character strings

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# 8  
Old 10-16-2012
Quote:
Originally Posted by ks_reddy
I want to remove the columns where ever character strings
As per your problem statement. If your any column contains String(except first row) that column will be deleted.Smilie
# 9  
Old 10-16-2012
Yes, test the suggestions with all sort of data input and you'll see.
# 10  
Old 10-17-2012
Quote:
Originally Posted by ks_reddy
Code:
Type,Data1,Data2,Data3 
A,2,3,4 
B,3,4,SOME STRING 
C,4,Inf,5 
D,5,4,4

Some times there will be many like Type1,Type2 etc columns and I want to preserve them
So basically you don't want to consider columns whose header starts with "Type"
Okies. Very slight modification needed for this try this..

Code:
awk -F, '{ if(NR==1){a=split($0,P,",")};
for(i=1;i<=NF;i++){if($i !~ /[A-z]/ || NR==1 || P[i] ~ /Type/){arr[NR,P[i]]=$i}else{K[++t]=i}}}
END{for(i in K){P[K[i]]=0}}
END{for(i=1;i<=NR;i++){
for(j=1;j<=NF;j++){if(arr[i,P[j]] != ""){s=s?s","arr[i,P[j]]:arr[i,P[j]]}}
print s;s=""}
}' file

Type,Data1
A,2
B,3
C,4
D,5
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