I am writing a shell script that takes at least 2 arguments. The first is an octal representation of file permissions, the second is a command that is executed on all the files found with that permission.
invoked: ./script.sh 543 ls -la
what I have now works alright, but it assumes that there are no more than 2 options with the command. Also on the system I'm using it ignores the $3 and $4 if not further arguments were passed, but this is poor style and I'm guessing some systems may get messed up.
I tried
but this didn't work.
Is my question clear or should I clarify?
Thanks for the help.
Hi..
When i refered the script /etc/rc.sysinit...
i found the "action commands" like
But this is not working in my shells..
the following error is coming...
Please anybody help
Thanks in advance
esham (5 Replies)
hi Gurus, please why is this happening:
when i run this:
#!/bin/bash
declare -a name
declare -a ph
declare -a eid
r=0;
c=1;
i=1;
n=;
echo " name phone email_id"
while :
do
#if ; then
#break;
#else
echo -n "field $i:"; read name ph eid;
let "i++";
... (5 Replies)
in /etc/init.d/networking of an ubuntu computer, I found this code:
if ifdown -a --exclude=lo; then
log_action_end_msg $?
else
log_action_end_msg $?
fi
Shouldn't it be replace by
ifdown -a --exclude=lo
... (0 Replies)
Hi all,
I need some help with a script I would like to amend.Let's say it's a simple script like the one below
controls=`grep line /etc/file |grep -v "^#"| awk -F":" '{print $4}'`
for cc in $controls
do
echo $cc
sleep 2
done
cc variable holds a list of 40 numbers.... (2 Replies)
lets explain it easy by showing the initial file and desired file:
I've a file such this that contains:
initial_file:
31/12/2011 23:46:08 38.6762 43.689 14.16 Ml 3.1
... (1 Reply)
Hey everyone
can you check this script logic ?
it has to restart webservice if found server load is higher than X,
also i have put it in crontab to run every one minute
#!/bin/bash
loadavg=$(uptime | awk -F "." '{ print $1 }' | awk -F ":" '{ print $5 }')
if ; then
pkill -9 httpd
service... (7 Replies)
Discussion started by: nimafire
7 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)