05-02-2013
C++ is a huge and multi-paradigm language. Rewriting an interpreted language with an compiled language has the potential to be faster or more efficient in terms of the final machine code read by the CPU. However, creating efficient code in C++, similar to C, is hard. If you do not have much experience with coding and reasonable paradigms used in the language, I would strongly discourage you to use it. Think about a higher level language that would be easier to debug/code or something you're more familiar with.
In case you are a decent C++ programmer, you should only rewrite programs in a low level language like C or C++ if you really need to get all the bits of performance possible out of it (like 3d game engines, which I write in C++). Else, it isn't necessary, and will only be a pain in the neck.
When looking at your situation, I would personally first try to rewrite/fix the code in perl itself, before moving to any other language.
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Hi folks,
could anyone please tell me how can i switch between two users without going thru the su(i.e. root)?
is there any such command?
thanks in advance,
thell (1 Reply)
Discussion started by: thell
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2. Shell Programming and Scripting
Hi,
what is the use of the double quotes and !! in the following code segment:
su - user1 << ""!! > /dev/null 2>&1
echo "welcome user1"
EOF
!!
also what is the difference between below:
su - user1 << ""!! > /dev/null 2>&1 and
su - $USER << ""!!!> /dev/null 2>&1.
Note: $USER =... (1 Reply)
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3. Shell Programming and Scripting
Hi,
what is the use of the double quotes and !! in the following code segment:
su - user1 << ""!! > /dev/null 2>&1
echo "welcome user1"
EOF
!!
also what is the difference between below:
su - user1 << ""!! > /dev/null 2>&1 and
su - $USER << ""!!!> /dev/null 2>&1.
Note: $USER =... (2 Replies)
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4. Shell Programming and Scripting
Can any one tell me :
How we can switch between two users without prompting for the password. (In the SHELL SCRIPT can we fetch the USERID and PASSWORD from a specified file, without using SUDO command)? (2 Replies)
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5. Linux
Hi all,
we have running some linux servers with sles9 and we have some problems with our dns servers. Sometimes they don't like to work. However, is there a parameter to enable faster switching between two ore more dns servers?
Thx for your help in front
Regards
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6. Shell Programming and Scripting
Hi
I want to write a script which can switch between super users.But it asks for the password at the prompt.How can I manage in the script so that it didnt ask me for the password at the prompt. (1 Reply)
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7. OS X (Apple)
greetings,
i hope this hasn't been covered previously. has anyone heard of a .kext or daemon that would allow linux or (open)solaris-like vt switching? googling didn't help much..
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8. Shell Programming and Scripting
Hi
I'm quite new with linux.
Very simple, I need to swap every 2 lines in a file.
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a a a
b b b
x x x
y y y
s s s
t t t
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y y y
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9. Solaris
HI,
I am using the windows 2003 server R2 in there we are using the putty as to access the different AP's
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10. Shell Programming and Scripting
Hello Folks
I am writing this simple program but I am stuck at this point. Here is the snippet from my script where I have issues.
3) echo "Current Directory: $(pwd) Menu 3"
echo -e "Enter a file name\n"
read fname
if
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LEARN ABOUT DEBIAN
dir::self
Dir::Self(3pm) User Contributed Perl Documentation Dir::Self(3pm)
NAME
Dir::Self - a __DIR__ constant for the directory your source file is in
SYNOPSIS
use Dir::Self;
use lib __DIR__ . "/lib";
my $conffile = __DIR__ . "/config";
DESCRIPTION
Perl has two pseudo-constants describing the current location in your source code, "__FILE__" and "__LINE__". This module adds "__DIR__",
which expands to the directory your source file is in, as an absolute pathname.
This is useful if your code wants to access files in the same directory, like helper modules or configuration data. This is a bit like
FindBin except it's not limited to the main program, i.e. you can also use it in modules. And it actually works.
As of version 0.10 each use of "__DIR__" recomputes the directory name; this ensures that files in different directories that share the
same package name get correct results. If you don't want this, "use Dir::Self qw(:static)" will create a true "__DIR__" constant in your
package that contains the directory name at the point of "use".
AUTHOR
Lukas Mai <l.mai @web.de>
COPYRIGHT AND LICENSE
Copyright (C) 2007, 2008 by Lukas Mai
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or,
at your option, any later version of Perl 5 you may have available.
perl v5.10.1 2008-05-11 Dir::Self(3pm)