Bio::SeqIO

It’s in the pack­age “Biop­erl”->“Bio::SeqIO”.

1.open file

my $io = Bio::SeqIO->new(-file => "noN.fa",-format => "fasta");

2. read­in one sequence

my $record = $io -> next_seq;

3. vari­able

$record->id:     #identifier
$record->desc:   #description
$record->length: #length of this sequence
$record->seq:    #sequence

 

SCREEN

1. new screen

screen -S neverdie
screen -R neverdie

2. con­nect to

screen -r neverdie

3. detach

screen -d neverdie

4. file .screen­rc

vbell off

5. foo­bar

 

TeX

1.installation:

sudo apt-get install texlive texs­tu­dio

texlive: sys­tem

texs­tu­dio: edi­tor

2. sam­ple

\documentclass{article}
\begin{document}
$\pi=\sum\limits_{ij}^{n}{x_i}{x_j}{\pi_{ij}}$
\end{document}