Remove part of a header in a fasta file

Question

[kcl58759]

Hi I need help writing a command to remove part of a header from my scaffold fasta file. I have headers that look like

>scaffold3247|size3454
TTATATAACTAATTAGATAAAATAGCTAATAATAAAAGCTTCTATATAACTAGCCTTCTTTTAATCTATATAATAAGCTTAGCTAATAAAAAGGCCCACT
TTTTTTTCCA

>scaffold11172|size823
GCTCAGCATGCCGTTGCCAACGCCGCGGGCGCTCATTTGCTGCAATCCAGCCGCCTTATTCCTGCTGCTGTCCTTGAGAGCCACGAGCCGGCCACCGTTG
ACAAACGTCTGGAACCGTAACCCAGACTCAGGCCCTTTGTAAGGCAGAGGCAGGAGCATGTTGACACTCCCGGCTGCGAAAAGATCACCACCAACAGCGT
CTTGACCATCGTGAGGCCCCAGC

and i need to get rid of the |size part

so

>scaffold3247
TTATATAACTAATTAGATAAAATAGCTAATAATAAAAGCTTCTATATAACTAGCCTTCTTTTAATCTATATAATAAGCTTAGCTAATAAAAAGGCCCACT
TTTTTTTCCA

>scaffold111
GCTCAGCATGCCGTTGCCAACGCCGCGGGCGCTCATTTGCTGCAATCCAGCCGCCTTATTCCTGCTGCTGTCCTTGAGAGCCACGAGCCGGCCACCGTTG
ACAAACGTCTGGAACCGTAACCCAGACTCAGGCCCTTTGTAAGGCAGAGGCAGGAGCATGTTGACACTCCCGGCTGCGAAAAGATCACCACCAACAGCGT
CTTGACCATCGTGAGGCCCCAGC

I am a novice at this so I am sure there is a way to use awk or sed but I am quite lost! Any help would be greatly appreciated!

Answer 1

[iraun]

A simple cut command could do it:

cut -d'|' -f1 input.fa > output.fa

Answer 2

[liorglic]

Or you could use sed: sed 's/|.*//' input.fa > output.fa