while loop display of files in a directory

[mike]

hi

i did a code to show the files in a directory
say

while(<test*.txt>)
{
print ;

}

it will show all the files with beginning with test and ending with .txt
but when i assigned it to a variable like this

$files = "test\*\.txt";
while(<"$files">)
{
print ;
}
it doesn't show the files.
Why is this so?
thanks

 

[ko]

hi

i did a code to show the files in a directory
say

while(<test*.txt>)
{
print ;

}

This is does a filename glob.

it will show all the files with beginning with test and ending with .txt
but when i assigned it to a variable like this

$files = "test\*\.txt";
while(<"$files">)
{
print ;
}
it doesn't show the files.
Why is this so?
thanks

In simple terms, this tries to read from a filehandle. Its documented in
perlop (do 'perldoc perlop' from your shell), the section titled 'I/O
Operators'.

Something like this is better suited to do what you want:

my $files = 'test*.txt';
print $_, "\n" while ( glob $files ); # or (glob 'test*.txt')

More reading:

perldoc -f glob
perldoc -f readline

HTH -keith

 

[John W. Krahn]

hi

i did a code to show the files in a directory
say

while(<test*.txt>)
{
print ;

}

it will show all the files with beginning with test and ending with .txt
but when i assigned it to a variable like this

$files = "test\*\.txt";
while(<"$files">)
{
print ;
}
it doesn't show the files.
Why is this so?

You added quotation marks to the file glob but you probably don't have
any files that start with "test and end with .txt".


John