Shell variables are not expanded when they appear in a string quoted by single-quotes. Since there are no spaces in the output from that date command, you could just use:
In cases where the variable you are expanding might contain spaces you can escape the inner double-quotes as in:
or, if you aren't using an pure Bourne shell, the preferred form:
Note also that this script will fail if the filename matching pattern filename_out.bin_"$Sausage1"_?????? ever matches more than one file.
This User Gave Thanks to Don Cragun For This Post:
On Solaris 5.9, is there any way to pass parameter(s), via SSH, to a command defined in the remote host's authorized_keys file?
We have a menu that uses SSH to control some apps on our various hosts. I've been tasked with enhancing it and making it more secure.
So far, the local host menu... (2 Replies)
I would like to know how to pass a variable inside a variable to a function.
sample code below
--------------
for x in 1 9
do
check_null $C$x ##call function to check if the value is null
if
then
echo "line number:$var_cnt,... (2 Replies)
I'm trying to run a command over ssh to AIX 5.2, something like:
ssh machine ls
but it just hangs. I can ssh into the machine and run a command, but can't pass it like above. Is there a security setting that disables this by default? If so, how do I change it?
Thanks! (8 Replies)
Hi,
I wan to pass arguments to remote script in Unix .
For that I'm using ssh
PFB the code I'm using:
ssh -t -l osdac 10.81.33.51 "cd /appl/OSD/LOGS/flstr010/test.sh "$1" "$2""
Problem is I'm not able to pass second argument .
Can anyone plz help me in resolving this. (5 Replies)
First off we have hundreds of webservers in our farm that we sometimes have to collect logs for customers. Thing is the script that I currently am working on doesnt like my awk commands via ssh. I am very novice at best so all help would be greatly appreciated.
ssh a$active "awk... (9 Replies)
I want to do following 2 commands via script:
1) eval `ssh-agent`2) ssh-add /export/home/sufuser/.ssh/id_rsa When asked for passphrase enter "passwordpassword1234
but whenever I run the script it stucks after "ssh-add /export/home/sufuser/.ssh/id_rsa" command and asks fro... (4 Replies)
Hi Experts,
I have specific requirement where I want to pass the password with the ssh username@hostname command .
I dont want to use RSA public and private keys also. Because that will be on production server and no one wants to give access like that.
Second thing it is production... (14 Replies)
I have a below syntax its working fine...
var12=$(ps -ef | grep apache | awk '{print $2,$4}')
Im getting expected output as below:
printf "%b\n" "${VAR12}"
dell 123
dell 456
dell 457
Now I wrote a while loop.. the output of VAR12 should be passed as input parameters to while loop and results... (5 Replies)
I have a variable called $a1 which maps to something like "http://servername proxy1 count http" and a lots of entries in a file on remote server.
If I have the following in my .sh script:
sed -i "\%$a1%d" mylog.txtthe line is deleted from mylog.txt. Great.
I'm trying now to remvoe this from a... (3 Replies)
Discussion started by: say170
3 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)