how to change header of fasta file

Question

[yaqinguo629]

Hello all, I have the following fasta file, but I want to change the header, please give mea hint, Thanks a lot

>7a11faf04904a091a0150f1de2091c13
GATCGAAGGAATCGGTCCGCCGTCA
>f04f5b529914f21e583996fbe22db642
GGACCTGGCCGGGCGGTCCGCTTTACGGCGTG
...
...
>503af07882c049f957b6a11c7d551400
TTCGAGCTCGACAAGTGGTCTAGGATTTTCCGAGTACTGTCTTGTCGAGCTC

Here is the what I want:

>ASV1
GATCGAAGGAATCGGTCCGCCGTCA
>ASV2
GGACCTGGCCGGGCGGTCCGCTTTACGGCGTG
...

>ASV1008
TTCGAGCTCGACAAGTGGTCTAGGATTTTCCGAGTACTGTCTTGTCGAGCTC

[Ram]

What have you tried? bioawk (or even plain awk) should be able to help you with this.

[Medhat]

This will give you a hint.
A: Renaming Entries In A Fasta File

Answer 1

[yaqinguo629]

awk '/^>/{print ">ASV" ++i; next}{print}' < file.fasta

this one works perfectly for this kind of issue. Thanks for your both @Medhat and @RamRS

[Ram]

Thank you for following up. Please accept your answer so the question is marked as solved.

[yaqinguo629]

Thanks for informing me this. Again, thank for your help!