Hi guys,
I have the following grep command in a script to search through a file for a string and return its count, and it works fine for when the string exists:
grep "string" file.txt | wc
However, sometimes the result will be 0 and I want the script to take this as the result. Right now... (6 Replies)
Hi,
My code is like this
if swlist -a revision 2>/dev/null | grep ABC 2>/dev/null
then
echo "Found Above mentioned ABC Version, please remove it first..."
fi
This is displaying the result to the screen.
i want to first suppress that and for that i wrote the below... (1 Reply)
Here is my script so far:
set dirs = ` find . -name "message.jar" 2> /dev/null | cut -d "/" -f 2 ` | uniq
foreach dir ( $dirs )
if (grep $dir/* someText==null) --> how do I write this in script?
print $dir
end
end (4 Replies)
Trying to create a command line script to look for all files matching a pattern, grep for a specific value in each file, and write out the filename long list. It's possible the filename won't containe the value.
{
echo “Running....”
for fname in 811_Intermediate_File_*
do
grep -l... (3 Replies)
Hi
Please take a look below, I'm grepping for /app/oracle and would like explicitly that result and not /app/oracle/admin as well.
# cat /tmp/fs.list
/app/oracle
/app/oracle/admin
# cat /tmp/fs.list | grep -w "/app/oracle"
/app/oracle
/app/oracle/admin (3 Replies)
Hello everyone,
I've been looking how to pass variables between bash and php-cli in 1 file. So far i got this:
#!/bin/bash
echo "This is bash"
php << EOF
<?php
echo "This is php\n";
?>
EOF
I would now like to be able to pass a variable declared in the bash to the php. I already... (0 Replies)
We have a number of OS X 10.6 machines who have home folders with incorrect permissions, which are causing managed prefs not to be applied correctly and not allowing saving. I need to delete all home folders whose name is numerical and modified before a certain date. I'm not sure of the date part... (2 Replies)
Hi
While trying to do a search on solaris, the grep results seems to be appearing on the same line instead of the new line.
Wed Jan 18 14:45:48 weblogic@test:/abcd$ grep qainejb02 *
qa_cluster_biz_view_tc_intl_servers_ports_2:qainejb02 7101
qa_cluster_servers_2:qainejb02... (2 Replies)
Hi,
I'm trying to write a script that checks gvfs to see if a mount exists so I can run it from network-manager's status hooks. I thought I'd pipe the output of gvfs-mount -l to grep for the particular mounts I care about. When I do this in a bash script:
cmnd="gvfs-mount -l | grep -i... (4 Replies)
Hi,
I am running following command in a bash script for testing IO and use grep to get throughput number, but it did not work, it displayed everything:
dd if=/dev/zero of=/dev/null bs=1G count=1 oflag=dsync | grep bytes | awk '{print $7}'
1+0 records in
1+0 records out
536870912 bytes... (2 Replies)
Discussion started by: hce
2 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)