Hello ,
i am on linux,
and im trying to figure out why my cp command cant copy one file.
I am trying to use variable in which i stored path to location where is file i wish to copy.
$ echo $ORA_ALERT_LOG
/u01/app/oracle/diag/rdbms/ring11/ring11/trace
$
$
$ pwd
/home/oracle
$ cp -p... (2 Replies)
I have found a question from the exercises of my study mat. The question is
"Why are there a in-core copy and a disk-copy of i-node block and super block?"
If any one know the proper answer then please send me..... (1 Reply)
Hi,
i was using a input file to get the last line of the file.But now i have stored
the values from the file to a variable and want the last line from the variable . Slightly confused on how to extract that data from the variable.
previous code,
cat input.txt
<TIME>00:15:48</TIME>... (2 Replies)
Hi all,
I have a variable say var1 (output from somewhere, which I can't change)which store something like this:
echo $var1
name=fred
age=25
address="123 abc"
password=pass1234
how can I make the variable $name, $age, $address and $password contain the info?
I mean do this in a... (1 Reply)
Hi,
I need to parse a simple text file like below and store the word that starts with BR* to a variable say $BRno. I need to do this in sh script.
NOTE: the length of the numbers following BR is not constant (eg: it could be BR1234 or BR22233). And there is only 1 BRxxxxx in a file at a given... (6 Replies)
When script is running you only see when some of the commands are not successfull.
Is there a way to see which command are executed and to show the substitution of variables as every line is executed ? (3 Replies)
Hi,
We Perfrom Loads to the database through a Perl script which generates a statistics file. I need to read the statistics. the Statistics file looks something like below:
Process Beginning - 08-26-2010-23.41.47
DB2 CONNECTION SUCCESSFUL!
Ready to process and load file: FILENAME
# of... (2 Replies)
Hi experts
cp bin root src /mnt
but not copy bin/bigfile
any help?
( I post this thread in the "redhat" forum wrongly, I don't know how to withdraw that question in that wrong forum)
Thanks (6 Replies)
I'm trying to copy script output and use it in this same script as a variable, and call the variable when script is compiled.
The script is below.
#!/bin/bash
output=$(script)
while read line; do
if ];
then
grep "$line" logfile.txt
# Create text file
echo "From: IT ... (4 Replies)
Discussion started by: SysAdminRialto
4 Replies
LEARN ABOUT REDHAT
universal
UNIVERSAL(3pm) Perl Programmers Reference Guide UNIVERSAL(3pm)NAME
UNIVERSAL - base class for ALL classes (blessed references)
SYNOPSIS
$is_io = $fd->isa("IO::Handle");
$is_io = Class->isa("IO::Handle");
$sub = $obj->can("print");
$sub = Class->can("print");
use UNIVERSAL qw( isa can VERSION );
$yes = isa $ref, "HASH" ;
$sub = can $ref, "fandango" ;
$ver = VERSION $obj ;
DESCRIPTION
"UNIVERSAL" is the base class which all bless references will inherit from, see perlobj.
"UNIVERSAL" provides the following methods and functions:
$obj->isa( TYPE ), CLASS->isa( TYPE ), isa( VAL, TYPE )
C<TYPE> is a package name
$obj is a blessed reference or a string containing a package name
C<CLASS> is a package name
C<VAL> is any of the above or an unblessed reference
When used as an instance or class method ("$obj-"isa( TYPE )>), "isa" returns true if $obj is blessed into package "TYPE" or inherits
from package "TYPE".
When used as a class method ("CLASS-"isa( TYPE )>; sometimes referred to as a static method), "isa" returns true if "CLASS" inherits
from (or is itself) the name of the package "TYPE" or inherits from package "TYPE".
When used as a function, like
use UNIVERSAL qw( isa ) ;
$yes = isa $h, "HASH";
$yes = isa "Foo", "Bar";
or
require UNIVERSAL ;
$yes = UNIVERSAL::isa $a, "ARRAY";
, "isa" returns true in the same cases as above and also if "VAL" is an unblessed reference to a perl variable of type "TYPE", such as
"HASH", "ARRAY", or "Regexp".
$obj->can( METHOD ), CLASS->can( METHOD ), can( VAL, METHOD )
"can" checks if the object or class has a method called "METHOD". If it does then a reference to the sub is returned. If it does not
then undef is returned. This includes methods inherited or imported by $obj, "CLASS", or "VAL".
"can" cannot know whether an object will be able to provide a method through AUTOLOAD, so a return value of undef does not necessarily
mean the object will not be able to handle the method call. To get around this some module authors use a forward declaration (see perl-
sub) for methods they will handle via AUTOLOAD. For such 'dummy' subs, "can" will still return a code reference, which, when called,
will fall through to the AUTOLOAD. If no suitable AUTOLOAD is provided, calling the coderef will cause an error.
"can" can be called as a class (static) method, an object method, or a function.
When used as a function, if "VAL" is a blessed reference or package name which has a method called "METHOD", "can" returns a reference
to the subroutine. If "VAL" is not a blessed reference, or if it does not have a method "METHOD", undef is returned.
VERSION ( [ REQUIRE ] )
"VERSION" will return the value of the variable $VERSION in the package the object is blessed into. If "REQUIRE" is given then it will
do a comparison and die if the package version is not greater than or equal to "REQUIRE".
"VERSION" can be called as either a class (static) method, an object method or or a function.
These subroutines should not be imported via "use UNIVERSAL qw(...)". If you want simple local access to them you can do
*isa = &UNIVERSAL::isa;
to import isa into your package.
perl v5.8.0 2002-06-01 UNIVERSAL(3pm)