06-11-2010
Thank you so much it's worked fine.
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1. Shell Programming and Scripting
If I have 3 variables and I want to check if any of these is null. If one of them is null then it should be assigned a value of 0.I have the following code below.
The output should be 0 is A, 11 is B, 33 is C
$a=
$b=11
$c=33
$echo $a $b $c
$11 33
for i in "${a}" "${b}" "${c}";
do
... (2 Replies)
Discussion started by: thana
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2. Shell Programming and Scripting
Hi All,
While executing following for loop in unix, it is working fine.
sum=0
tot_amt=`for i in `cat amt`
do
sum=`echo "$sum + $i"|bc`
done`
But if i assing this loop in a variable it is not working. The error is so and done is unexpected.
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3. Shell Programming and Scripting
I need to do something like this:
for i in 1 2 3 4 5; do
arr=$(awk 'NR="$i" { print $2 }' file_with_5_records)
done
That is, parse a file and assign values to an array in an ascending order relative to the number of record in the file that is being processed on each loop.
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4. Shell Programming and Scripting
can we make a global variable and store character values and add other values to that variable ?? for example
a="hello, John"
and can we add value ". How are you? so
a can have
"hello, John. How are you?"
can someone help me?? (2 Replies)
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5. Shell Programming and Scripting
Hi
I am new to shell scripting and i am preparing a script.
for now i am work on a sub part of it..but i am unable to make it work.
---
the test code that i am working on
--------------------------
IFS=""
Sample_eve=`psg proc_s | grep tY`
n=0
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6. Shell Programming and Scripting
Hi folks.
I have this variable called FirstIN that contains something like this: 001,002,003,004...
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7. Shell Programming and Scripting
Hi,
Please help me writing for loop to fetch data and store in variable from a text file which contains data as below:
12
46
56
5466
111
There are 40 lines of data...!!!!
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8. Shell Programming and Scripting
my script is some thing like this
i11="{1,2,3,4,5,6,7,8,9,10,11,}"
echo "enter value"
read value ..............suppose i11
x="$value"
echo "$($value)" .............the echo should be {1,2,3,4,5,6,7,8,9,10,11,}
but its showing "i11" only.
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9. Shell Programming and Scripting
Hi, I was wondering if anyone could assist me for (what is probably) a very straightforward answer.
I have input files containing something like
File 1
Apples
Apples
Apples
Apples
File 2
Bananas
Bananas
Bananas
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10. Shell Programming and Scripting
Hi All,
Is it possible to grep for two files and assign their names to two separate variables with for loop? I am doing the below currently:
if
then
for fname in $( cd $dirA ; ls -tr | grep "^Ucountry_file$")
do
InFile=$dirA/$fname
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LEARN ABOUT DEBIAN
dbd::gofer::policy::base
DBD::Gofer::Policy::Base(3pm) User Contributed Perl Documentation DBD::Gofer::Policy::Base(3pm)
NAME
DBD::Gofer::Policy::Base - Base class for DBD::Gofer policies
SYNOPSIS
$dbh = DBI->connect("dbi:Gofer:transport=...;policy=...", ...)
DESCRIPTION
DBD::Gofer can be configured via a 'policy' mechanism that allows you to fine-tune the number of round-trips to the Gofer server. The
policies are grouped into classes (which may be subclassed) and referenced by the name of the class.
The DBD::Gofer::Policy::Base class is the base class for all the policy classes and describes all the individual policy items.
The Base policy is not used directly. You should use a policy class derived from it.
POLICY CLASSES
Three policy classes are supplied with DBD::Gofer:
DBD::Gofer::Policy::pedantic is most 'transparent' but slowest because it makes more round-trips to the Gofer server.
DBD::Gofer::Policy::classic is a reasonable compromise - it's the default policy.
DBD::Gofer::Policy::rush is fastest, but may require code changes in your applications.
Generally the default "classic" policy is fine. When first testing an existing application with Gofer it is a good idea to start with the
"pedantic" policy first and then switch to "classic" or a custom policy, for final testing.
POLICY ITEMS
These are temporary docs: See the source code for list of policies and their defaults.
In a future version the policies and their defaults will be defined in the pod and parsed out at load-time.
See the source code to this module for more details.
POLICY CUSTOMIZATION
XXX This area of DBD::Gofer is subject to change.
There are three ways to customize policies:
Policy classes are designed to influence the overall behaviour of DBD::Gofer with existing, unaltered programs, so they work in a
reasonably optimal way without requiring code changes. You can implement new policy classes as subclasses of existing policies.
In many cases individual policy items can be overridden on a case-by-case basis within your application code. You do this by passing a
corresponding "<go_<policy_name">> attribute into DBI methods by your application code. This let's you fine-tune the behaviour for special
cases.
The policy items are implemented as methods. In many cases the methods are passed parameters relating to the DBD::Gofer code being
executed. This means the policy can implement dynamic behaviour that varies depending on the particular circumstances, such as the
particular statement being executed.
AUTHOR
Tim Bunce, <http://www.tim.bunce.name>
LICENCE AND COPYRIGHT
Copyright (c) 2007, Tim Bunce, Ireland. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
perl v5.14.2 2007-10-16 DBD::Gofer::Policy::Base(3pm)