I can't for the love of me figure out how to work with double quotes and single quotes in variables in bash scripts. For instance, I added the following line to my .bash_aliases file:
I want this so that I can go straight to 'My Documents' in my Windows installation (which is mounted at /host) by using cd in the terminal. This is my issue though:
What do I have to change the code in .bash_aliases to to make this work? Also, if you know of any good sites that explain this sort of thing, that would be great.
I have a script that I'm trying to shorten (below) by removing repetitive code.
if ]
then
commodity_ndm_done=Y
fi
if ]
then
customer_ndm_done=Y
fi
if ]
then
department_ndm_done=Y
fi
if ]
then
division_ndm_done=Y
fi (3 Replies)
Hello,
FIRST QUESTION:
I am writing a script in which a query is taken at the beginning of the script to be later used at the end. In the query, variables are generated from a loop, and I would like to assign the variable NAME (not value) with an appended 1, 2, 3, 4.....n. The number of... (2 Replies)
Hello everybody,
I am having problem in converting byte array variables to Hexa String variables for Linux. I have done, converting byte array variables to Hexa String variables for Windows but same function doesn't work for linux. Is there any difference in OS ? The code for Windows is given... (2 Replies)
I need to define a variable of variable. I'll try to explain it.
I've a list:
LIST="aaa bbb ccc"I need to do something like:
for word in LIST ;do
res_$word=`ls $word`
done
This doesn't work. Any idea?
Thanks (3 Replies)
Hi All,
i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way??
#!/bin/ksh
##script is sample.ksh
age=$1
gender=$2
class=$3
.
.
.... (3 Replies)
Sometimes it is handy to protect long scripts in C++.
The following syntax works fine for simple commands:
#define SHELLSCRIPT1 "\
#/bin/bash \n\
echo \"hello\" \n\
"
int main ()
{
cout <<system(SHELLSCRIPT1);
return 0;
}
Unfortunately for there are problems for:
1d arrays:... (10 Replies)
Below are three variables, which I want to pass into variable RESULT1
username1=userid
poihostname1=dellsys.com
port1=8080
How can I pass these variables into below code...
RESULT1=$((ssh -n username1@poihostname1 time /usr/sfw/bin/wget --user=sam --password=123 -O /dev/null -q... (4 Replies)
Discussion started by: manohar2013
4 Replies
LEARN ABOUT DEBIAN
config::general::interpolated
General::Interpolated(3pm) User Contributed Perl Documentation General::Interpolated(3pm)NAME
Config::General::Interpolated - Parse variables within Config files
SYNOPSIS
use Config::General;
$conf = new Config::General(
-ConfigFile => 'configfile',
-InterPolateVars => 1
);
DESCRIPTION
This is an internal module which makes it possible to interpolate Perl style variables in your config file (i.e. $variable or
"${variable}").
Normally you don't call it directly.
VARIABLES
Variables can be defined everywhere in the config and can be used afterwards as the value of an option. Variables cannot be used as keys or
as part of keys.
If you define a variable inside a block or a named block then it is only visible within this block or within blocks which are defined
inside this block. Well - let's take a look to an example:
# sample config which uses variables
basedir = /opt/ora
user = t_space
sys = unix
<table intern>
instance = INTERN
owner = $user # "t_space"
logdir = $basedir/log # "/opt/ora/log"
sys = macos
<procs>
misc1 = ${sys}_${instance} # macos_INTERN
misc2 = $user # "t_space"
</procs>
</table>
This will result in the following structure:
{
'basedir' => '/opt/ora',
'user' => 't_space'
'sys' => 'unix',
'table' => {
'intern' => {
'sys' => 'macos',
'logdir' => '/opt/ora/log',
'instance' => 'INTERN',
'owner' => 't_space',
'procs' => {
'misc1' => 'macos_INTERN',
'misc2' => 't_space'
}
}
}
As you can see, the variable sys has been defined twice. Inside the <procs> block a variable ${sys} has been used, which then were
interpolated into the value of sys defined inside the <table> block, not the sys variable one level above. If sys were not defined inside
the <table> block then the "global" variable sys would have been used instead with the value of "unix".
Variables inside double quotes will be interpolated, but variables inside single quotes will not interpolated. This is the same behavior as
you know of Perl itself.
In addition you can surround variable names with curly braces to avoid misinterpretation by the parser.
SEE ALSO
Config::General
AUTHORS
Thomas Linden <tlinden |AT| cpan.org>
Autrijus Tang <autrijus@autrijus.org>
Wei-Hon Chen <plasmaball@pchome.com.tw>
COPYRIGHT
Copyright 2001 by Wei-Hon Chen <plasmaball@pchome.com.tw>. Copyright 2002-2010 by Thomas Linden <tlinden |AT| cpan.org>.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See <http://www.perl.com/perl/misc/Artistic.html>
VERSION
2.14
perl v5.10.1 2010-12-01 General::Interpolated(3pm)