How do I print an entire array in Perl?

How do I print an entire array in Perl?

Use join() #!/usr/bin/perl my @arr = (1, 20, ‘asdf’, 100); print join(‘, ‘, @arr); We have identified an array @arr in which is placed a few numbers and a string, and then using join(‘, ‘, @arr) we have created a string and using print brought it to the screen. The result of this code: 1, 20, asdf, 100 .

How do I print an array in Perl script?

Combine either one with dynamic scope-constraining ‘ local ‘ to avoid having ripple effects throughout the script: use 5.012_002; use strict; use warnings; my @array = qw/ 1 2 3 4 5 /; { local $” = ‘, ‘; print “@array\n”; # Interpolation. } The special variables $, and $” are documented in perlvar.

How do I print to a file in Perl?

In order to write to a file, first you need to open the file for writing as follows:

1. open(FH, ‘>’, $filename) or die $!;
2. print FH $str;
3. close(FH);

How do I redirect Perl output to a file?

Redirect STDOUT using a filehandle As with select, this will have a global affect on the Perl program. use feature qw/say/; use autodie; # copy STDOUT to another filehandle open (my $STDOLD, ‘>&’, STDOUT); # redirect STDOUT to log. txt open (STDOUT, ‘>>’, ‘log. txt’); say ‘This should be logged.

How do I print the last element of an array in Perl?

Perl returns element referred to by a negative index from the end of the array. For example, $days[-1] returns the last element of the array @days . You can access multiple array elements at a time using the same technique as the list slice.

How do I save a file in Perl Linux?

1. Write and Run Your First Script. All you need to write Perl programs is a text editor.
2. Write Your Script. Create a new text file and type the following exactly as shown: #!usr/bin/perl.
3. Run Your Script. Back at the command prompt, change to the directory where you saved the Perl script.

What is stderr Perl?

In Perl, when a perl program starts, these two output channels are represented by two symbols: STDOUT represents the Standard Output, and STDERR represents the Standard Error.