Remove text flanking .. on fasta-headers

Question

[123agarwalsheetal]

I have file like below :

>1 Scaffold001_3a:1-2410 TCONS_00023122 - XLOC_013800 CUFF.2.1
TCTGGAGTCAACTGCAGTGTTCGAATATAATACATTGCGAACAAAGTTGATTGAAGAATTTGCTAA
>2 Scaffold001_3a:26352-26946 TCONS_00019328 + XLOC_011360 CUFF.1.1
TTAATTATCGATATATTGAGTCATTGACGTTGTTCCACCTCTATATTGTACATACTTATATATATTAATAT

and I want to remove numbering and want file like this:

>Scaffold001_3a:1-2410 TCONS_00023122 - XLOC_013800 CUFF.2.1
TCTGGAGTCAACTGCAGTGTTCGAATATAATACATTGCGAACAAAGTTGATTGAAGAATTTGCTAA
>Scaffold001_3a:26352-26946 TCONS_00019328 + XLOC_011360 CUFF.1.1
TTAATTATCGATATATTGAGTCATTGACGTTGTTCCACCTCTATATTGTACATACTTATATATATTAATAT

Please let me know the command for this.

Thank you.

Answer 1

[5heikki]

 awk 'BEGIN{FS=" "}{if($0~/^>/){$1=""; print ">"substr($0,2)} else{print $0}}' input.fna > ouput.fna

Answer 2

[cpad0112]

Please post what you have tried.

With sed:

$ sed '/^>/ s/>[0-9]\+\W/>/' test.fa     

>Scaffold001_3a:1-2410 TCONS_00023122 - XLOC_013800 CUFF.2.1
TCTGGAGTCAACTGCAGTGTTCGAATATAATACATTGCGAACAAAGTTGATTGAAGAATTTGCTAA
>Scaffold001_3a:26352-26946 TCONS_00019328 + XLOC_011360 CUFF.1.1
TTAATTATCGATATATTGAGTCATTGACGTTGTTCCACCTCTATATTGTACATACTTATATATATTAATAT

with awk:

$ awk -v OFS="\n" '/^>/ {getline seq}{sub (/^>[0-9]+ /,">",$0); print $0,seq}' test.fa  

>Scaffold001_3a:1-2410 TCONS_00023122 - XLOC_013800 CUFF.2.1
TCTGGAGTCAACTGCAGTGTTCGAATATAATACATTGCGAACAAAGTTGATTGAAGAATTTGCTAA
>Scaffold001_3a:26352-26946 TCONS_00019328 + XLOC_011360 CUFF.1.1
TTAATTATCGATATATTGAGTCATTGACGTTGTTCCACCTCTATATTGTACATACTTATATATATTAATAT