I want to use find to locate files with two different extensions, and run a grep on the results. The closest I have gotten is incredibly slow and ugly:
for i in `ls -laR|egrep -e '(.js|.css)'`; do find . -name $i -print|xargs grep -H searchBg; done;
This method makes my eyes bleed. Help! ;)
... (2 Replies)
I have a program which gets an input file (which contain a list of objects) and processes the objects one by one sequentially. However when there are many objects it is faster to split the input into smaller lists and run the program in multiple terminal sessions simultaneously. I want to know if... (2 Replies)
I want to make a symbolic link to a set of files in a particular directory if they exist. The number of files in the set is not known. The following script fails because it is ambigious.
if(-f dir1/*.a) then
ln -s dir1/*.a dir2/
endif
Can anyone help me?
Thanks a lot. (1 Reply)
Hi,
I have files with names like file1.txt.txt.txt.txt and file2.txt.txt.txt.txt.txt............ (random infinite number of .txt exist).
how to truncate (mv) their names to ones with single .txt extension like file1.txt and file1.txt ? In other words, how to extract the filename upto first... (12 Replies)
I posted this already in another thread, but was told that I should create a seperate thread for the following question:
How do I strip the extension when the delimiter might occur multiple times in the filename?
For example:
I have 2 files as input for my script.
test.extension... (8 Replies)
I copied some files to another folder, and I want to change them from .doc extensions to .txt extensions. I tried using the cp and mv commands, but it didn't work. Is it possible to change file extensions with these commands, and if so how do I do it? I tried using the * wildcard (say cp *.doc... (1 Reply)
I am having problems creating multiple forks. I want create a certain number of forks, each call a program and each wait for a different value. How is this accomplished my loop is not doing the trick.
for (i = 0; i < 5; i++) {
if (fork() < 0) {
//print error
}
... (3 Replies)
for media files in directory i want change every special char in name to "_" , create screenshots, get media information, then cat that info in 1 file, after that i want split (only) media files (not *.jpg,*.txt, etc.) with rar (including some file with info in each archive, and give each archive... (7 Replies)
HI,
I have some csv files with mutiple extensions, I want to remove all the extensions and keep only the .csv extension.
anybody can suggest me how to do this.
source files
1.txt.csv.txt.csv.csv.txt.csv
2.csv.txt.csv.txt.csv.txt
target
1.csv
2.csv
--Wang (1 Reply)
Here is a simplified example of my problem. Say I have the following 3 sub-directories;
./folder1
A.txt
A.sh
./folder2
B.txt
./folder3
C.txt
C.sh
I would like to list the directory names which contain both '.txt' & '.sh' type extensions. I have came up with the following code;... (8 Replies)
Discussion started by: mmab
8 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)