This one solves a specific problem that matches your vague description.
Code:
awk 'NR==FNR {a[$0]; bf=FILENAME; next} ($0 in a) {delete a[$0]; next} {print FILENAME,":",$0,"not in",bf} END {for (i in a) print bf,":",i,"not in any file"}' bigfile f1 f2 f3 f4 f5 f6 f7
Hi All,
I have list of multiple files with 7 fields all together. Those are being split to exact lines of 20000 each.
xaa
xab
:
:
:
xhx
Please advise me how to read from those files and in fact I need to invoke and sql update statement for each inputs values..
Regards, (5 Replies)
Hi all,
I have to generate some report from shell script .We have stacktrace log file which generate hourly basis.
So now my q is that how this shell script will read all stacktrace log file for particlular day and parse accordingly desire output.
Any help or suggestion as i am newbie with... (1 Reply)
Hi all,
I have a requirement where i have to read multiple files using Shell Script in Korn Shell.
each file will have the 3rd line as the amount field, i have to read this amount field and sum it for all the files.
any idea on how to achieve this?? (i think i can achieve it using a loop,... (9 Replies)
Hi,
Can any one tell me if i can read two files in a shell script...
My actual requirement is to read the 1st text file and parse it to get the file code and use this file code to retrieve data from database and print the fetched data in the 2nd text file (I have parsed it and printed the... (2 Replies)
Hi all,
I would like to simply read a file which lists a number of pathnames and files, then search and replace key strings using a few vi commands:
:1,$s/search_str/replace_str/g<return>
but I am not sure how to automate the <return> of these vis commands when I am putting this in a... (8 Replies)
Hi All,
there is a script that reads multiple files in a directory starting with CTG_TMPxx where xx is an integer number.
i have a problem in readin the last file. For example, if there are 10 files in that directory, 9 files are read and processed. but the 10th file, its saying as cannot read... (1 Reply)
Hi folks
I have a situation where I am trying to use awk to compute mean and standard deviation for a variable that spans across multiple files. The layout of each file is same and arranged in 3 columns and uses comma as a delimiter.
File1 layout:
col1,col2,col3
0,0-1,0.2345... (13 Replies)
I am trying to create a script which will read 2 files and use the lines of file 1 for each line on file 2.
here's my sample code
cat $SBox |
while read line
do
cat $Date |
while read line
do $SCRIPTEXE <line from first file> $2 <line from 2nd file>
... (12 Replies)
Hi, is there a ways to read multiple files in a single awk command?
For example:
awk -f awk_script file1 file2 file3
I've google it, most of them suggest using FNR. But I don't understand how it works. It will be a great help if someone able to explain it in simple term with some example. (4 Replies)
We have the data looks like below in a log file.
I want to generat files based on the string between two hash(#) symbol like below
Source:
#ext1#test1.tale2 drop
#ext1#test11.tale21 drop
#ext1#test123.tale21 drop
#ext2#test1.tale21 drop
#ext2#test12.tale21 drop
#ext3#test11.tale21 drop... (5 Replies)
Discussion started by: Sanjeev G
5 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)