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Change SNPID in vcf file with awk

Hi, I have a VCF file with SNP IDs like this:

AX-14233402__rs35404821
AX-37499887__rs74704183
AX-36783275__rs11997571

I would like to change the SNP IDs to have only the IDs without the AX-... term:

rs35404821 
rs74704183 
rs74704183

Is there any solution for this? I tried with a gsub command, but nothing changed:

awk '{gsub(/AX*_rs/,"rs"); print}' datafile.vcf > datafile_ID.vcf
vcf snpid
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updated by cpad0112 cpad0112 • written by L_to_the_m • L_to_the_m

Do not delete posts when they've been addressed. If one or more solutions worked, accept them using the green check mark.

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written by Ram Ram

can you try one of these three?

$ awk -F "AX-.*__" '{print $1$2}' test.vcf 
$ awk -F "AX-.*__rs" -v OFS="rs" '{print $1,$2}' test.vcf 
$ sed '/\tAX.*__rs/ s//\trs/' test.vcf
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written by cpad0112 cpad0112

1 answer 

 awk -F '\t' '/^#/ {print;next;} {OFS="\t";gsub(/.*__rs/,"rs",$3);print}' < in.vcf
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written by Pierre Lindenbaum Pierre Lindenbaum

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