so any method to remove header part of FASTA file

Question

[CHINMAYA]

so any method to remove header part like( _ORF.1 85-439 type:complete length:354 frame:2 start:CTG stop:TAA ) in orfs.fa?

>MSTRG.942.2_j_ORF.1 [85-439](+) type:complete length:354 frame:2 start:CTG stop:TAA
CTGTTGAGTATAGATTCCTTTTTCACTCAgtaagcaaaaaaaaaagtagatctGAAACCCAT
CTTTCTATCAAGAACCCCCAGCTCCATTTCCACGCCCCATCTCCGGCCTCCGCGACACATAT
ATCCATTTTCGTGCTCTTCATCTCCTAAGCTTTCATTTGAACCGAATAAATCAACTTTTGAA
GCAACTTCGTGGTCAACCCATTTTCTTCCCTTCCCGGTAATACTCTTTTTCCGGTCACCTTT
CCTCTTTTCTTCCTTCTCTCTTACCtatttattccttttttttgtctttcaaaACTGTAGTT
TTTgtcctttttattttcttcttctagaTGCATTTTTTATTCCT

[finswimmer]

This depends how your headers looks like in general. For example this would remove anything from the first _ on:

$ sed '/>/ s/_.*//g' my.fasta

>MSTRG.942.2
CTGTTGAGTATAGATTCCTTTTTCACTCAgtaagcaaaaaaaaaagtagatctGAAACCCAT
CTTTCTATCAAGAACCCCCAGCTCCATTTCCACGCCCCATCTCCGGCCTCCGCGACACATAT
ATCCATTTTCGTGCTCTTCATCTCCTAAGCTTTCATTTGAACCGAATAAATCAACTTTTGAA
GCAACTTCGTGGTCAACCCATTTTCTTCCCTTCCCGGTAATACTCTTTTTCCGGTCACCTTT
CCTCTTTTCTTCCTTCTCTCTTACCtatttattccttttttttgtctttcaaaACTGTAGTT
TTTgtcctttttattttcttcttctagaTGCATTTTTTATTCCT

To adopt the regex to your needs, we need to know more about how the header is structured.

[CHINMAYA]

>MSTRG.942.2_j_ORF.1 [85-439](+) type:complete length:354 frame:2 start:CTG stop:
TAACTGTTGAGTATAGATTCCTTTTTCACTCAgtaagcaaaaaaaaaagtagatctGAAACCCAT
CTTTCTATCAAGAACCCCCAGCTCCATTTCCACGCCCCATCTCCGGCCTCCGCGACACATAT
ATCCATTTTCGTGCTCTTCATCTCCTAAGCTTTCATTTGAACCGAATAAATCAACTTTTGAA
GCAACTTCGTGGTCAACCCATTTTCTTCCCTTCCCGGTAATACTCTTTTTCCGGTCACCTTT
CCTCTTTTCTTCCTTCTCTCTTACCtatttattccttttttttgtctttcaaaACTGTAGTT
TTTgtcctttttattttcttcttctagaTGCATTTTTTATTCCT

>MSTRG.944.3_j_ORF.1 [162-489](+) type:complete length:327 frame:1 start:ATG stop:
TGAATGCCGACGTACAAGATTAGGGGAATCGACGTAGATTTTCCCTACGAAGCCTATGATTCCCA
ACTCGTTTACATGGACAAAGTCATGCAATCGCTTCAGGAGGTAGCGATTGACTCACTCAATC
ATTGCACTTTTGATTATTTAAGctacttttgatgtatttttattttattttatggtagTTCC
GCTGTGGTTGTTGTAATAATcgactaataattaattataaacatgATTTTGGATCAATTGGA
AGTGATCacaaaatgttaatatttaCTTGTTGTCAGGCAATTTGAAATTGATGTTGTTAAGA
TCATGATTGATCAGCAG

>MSTRG.944.3_j_ORF.2 [3141-3549](+) type:complete length:408 frame:1 start:TTG stop:
TAGTTGAAAATTTGTGCTGTATATTTTCTGCTATCTCGGGTACAGGatgatattttctttattgc
agCACTTCTTCTAAAACTTGAAAAGCGCATTGCTGAGGTGCATATTGAATCTAAGGAGTTGG
GGTTTACTAAACCCGGGCCCTATATGTTTGAACTGCTTGCTGATCTTAATATCACTCACAAG
ACTGCTTCTAAGCTTAAGAGTATAATAGCTGAAGCTTCAACTCTCATTGAGGAAAATAATCA
GGAGAAATCAACTGGCACCATCTGCAGATTGGATACTATCAAGGATATTCTTGACATTGTTT
TCAGGGATGGAAGAACTTCTCATGCTAAATACTATCGTGTAAGTTTTGAATTATCGTTTACA
CTTCAGTGGATTGATTTTGTTTGTCTTGTTGCTTCC

>MSTRG.944.3_j_ORF.8 [9923-10301](-) type:complete length:378 frame:-1 start:TTG stop:
TGATTGACTCAGCNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNCA
GGAAGATTGTCTTTTTGTCCAACAATCTCAAGATTTCTACTTTGAGAGGTCACATTATCTTT
ACATTGCAGATCTATATCACCTTGAGAACTTTGAAGAGCTATATGACAAATCTAATGTTTAT
CATGAT

>MSTRG.944.3_j_ORF.9 [11413-11737](-) type:complete length:324 frame:-2 start:ATG stop:
TAAATGGATATATATTATCATAGGACGGTAATCTGGGGAACATACCAAGGAGCACGGTTCCGTTC
CCTAATGACTCGCCGGAGCCAAAGAAATTCCCTGACCAGTGACCATTCTCTTGAAGTATTTC
CAGagatagaaaatttatataccTCTGCTGATCCACCCAGGTCTCAATCACAACATCAAATC
TCCGGAAGACCCTTTCCAACATATGCTTTGTGTGACACTAAGCCACAAAGCATACCTTCTGT
AACGAGGTTCCCAAATAATTATCTGTTTGAATTAAAGCCCAGAACCAGACATAATGAGATCA
TTTTCTCTATCAAA

>MSTRG.1194.1_u_ORF.1 [2308-2830](+) type:complete length:522 frame:2 start:CTG stop:
TAGCTGATGGAGGCGAACCTGAATGTTATGATGAAGCCATGGAGAGTGATGAAAAGAAGAAGTGG
TTGGATGCTATGCAAGAgtcccgtggttgtttacttctcacattgagaaggtttttccacgt
taaaaattattgtgtcatttgtgattggtgattttagttgctgtgattatttgttgattgct
cctcacagattcttgcaagtttgggaaattgattatccgctgcatattgctctgttagagtt
gttattatatttgttgttgaatttcccatcagagtggcatcagagctctttggttaaggggc
tgtttgacttgtttgaatgatggaggcaaatacaaatagaatgatttgtttgaatggcacta
attatcacttatggaagggaaaaatgaaggatctgttatttgtgaagaatttGCATCTTCCT
GTGTTTGCTACTGAGAAGCCAGAATCCAAGACTGATGAGGATTGGAGCTTTGAACATCAGCA
GGTCTGTGGTTTTATTCGGCAATATG

>MSTRG.1194.1_u_ORF.2 [2333-2771](-) type:complete length:438 frame:-1 start:TTG stop:
TAATTGGATTCTGGCTTCTCAGTAGCAAACACAGGAAGATGCtttaagaagtgtttattgtctag
gaagtaaaaagggaaggtattcactattaatcacggtaagtttgtttagtaagataaacata
aacggaggtagtaagtttgttcagtttgtcggggaattggtttctcgagactacggtgagac
taccctttaagttgttgtttatattattgttgagattgtctcgttatacgtcgcctattagt
taaagggtttgaacgttcttagacactcctcgttagttgtttattagtgtcgttgattttag
tggttagtgtttactgtgttattaaaaattgcacctttttggaagagttacactcttcattt
gttggtgccctgTCTTGCATAGCATCCAACCACTTCTTCTTTTCATCACTCTCCATGGCTTC
ATCA