Hi!
I am writing a script handling downloading list of files and I have to check whether file is present locally and if not finished than continue downloading. To do so I have to compare sizes of remote file and local file.
To check remote file size I have to parse something like this:
... (2 Replies)
I have a file with the following content.
> cat /tmp/internetusage.txt
6709.296322 30000 2/7/2010 0.00I am using the following awk command to calculate a percentage from field 1 and 2 from the file.
awk '{ print $1/$2*100 }' /tmp/internetusage.txt
This outputs the value "22.3643" as a... (1 Reply)
Hello,
I'm new to using AWK and would be grateful for some basic advice to get me started.
I have a file consisting of 10 fields. Initially I wish to calculate the number of . , ~ and ^ characters in the 9th field ($9) of each line. This particular string also contains alphabetical... (6 Replies)
Hi guys,
I am new to unix shell scripts. I have a file-A.txt which contained several names in "ABCo12345678.gz_to_ABCn12345678.gz" format. I want to extract the numbers in a "for" loop that means I can not use cut -c6-13 A.txt.Dose anyone know how to do it by using awk? Thank you so much.
... (4 Replies)
Can someone explain whats happening here:
$ awk 'BEGIN {print (2.5 - 1)}'
1,5
2.5 - 1 is correctly calculated to 1,5 (using european locale)
$ echo "2.5" | awk '{temp = $1 - 1; print temp}'
1
If i now pipe the string 2.5 through awk it seems at it truncates 2.5 to 2?
What's the... (4 Replies)
Hi,
I have a problem when doing calculations in awk.
I want to add up a few numbers and output the result.
testfile:
48844322.87
7500.00
10577415.87
3601951.41
586877.64
1947813.89
$ awk '{x=x+$1};END{print x}' testfile
6.55659e+07The problem is the number format. It should show... (3 Replies)
I am trying to go through a file that has a few million lines. I want to only pull lines that contain a number anywhere in the ninth field, but it has to be after a "/" character. Here is my awk:
awk -F\| '$9 ~ /\/*{1,}*/ {print $0}' file1 > file2
However, it is just printing out every... (3 Replies)
I am trying to output all lines in a file where $7 is less than 30. The below code does create a result file, but with all lines in the original file. The original file is tab deliminated is that the problem? Thank you :).
awk 'BEGIN{FS=OFS=","} $7 < 30 {print}' file.txt > result.txt... (3 Replies)
Hello Friends,
Can somebody assist an issue I am having? I have a separate file with a list of account ids
XXX200B02Y01
XXX200B03Y01
XXX200B05Y01
XXX200B07Y01
XXX200B08Y01
I call the file, and run an egrep against a directory and logfiles
AccountID=$(cat... (2 Replies)
I have below code inside my awk script
if ( $0 ~ /SVC IN:/ )
{
svc_in=substr( $0,23 , 3);
if (msg_start == 1 && msg_end == 0)
{
msg_arr=$0;
}
}
else if ( $0 ~ /^SVC OUT:/ )
{
svc_out=substr( $0, 9, 3);
if (msg_start == 1 && msg_end == 0)
... (6 Replies)
Discussion started by: bhagya123
6 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)