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This article mainly explains "the introduction of reading and writing operation of Perl file". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Now let the editor to take you to learn the "introduction to reading and writing operations of Perl files"!

Basic Icano operation:

Output:

Print "Hello\ n"

Print "Say\" Hello\ "to NG", "\ n"

"", $outfile or dieboxes; # Open the file $outfile

# or: openOUT, "> $outfile" or diebacks!

# append to the file (the contents of the original file are retained):

Open OUT, "> > $outfile" or diebacks!

# output content to file:

Print OUT "Hello, NG\ n"; # enter content Hello NG into the file

# close the handle:

Close OUT; # output end

Use of $/ (current input record delimiter, default is newline character):

Input file test.fasta:

> Scaffold1

AAAAATCTA

GACGA

> Scaffold2

ATCTAAATAT

TTTAAC

Open IN, "; # change the input record delimiter to" > "

Open IN, "; # change the input record delimiter to" > "

; # Skip the content before the first ">"

My $line =

Chomp $line; # delete the ">" at the end

Print ">", $line

Close IN

$/ = "\ n"; # change the input record delimiter to "\ n"

# display

> Scaffold1

AAAAATCTA

GACGA

At this point, I believe you have a deeper understanding of the "introduction to the read and write operation of Perl files". You might as well come to the actual operation. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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