The magnificent 'Did you know?' thread (Page 2 of 3)

As a french speaking guy, here is what i understood :

the nettoyant riche tirelire aluminium nitrate si oslo US-dollar sa an oxydé agent ni ion-épreuve explosive des cieux, .... cela fertiliser bombes, lit d'algue tout les rigolons tous.

For more fun, I translated it via google-translate :

cleaning the aluminum nitrate rich piggy bank oslo if its US-dollar year-ion oxidized agent or explosive event of the heavens .... this fertilizer bombs, while the bed of seaweed rigolons all.

Last edited by Gala (2011-10-28 18:15:29)

This is not true. You have to declare it as a local variable with the local keyword.

#!/bin/bash

evalvariable () {
     varvar="hello friend"
}

evalvariable
echo $varvar

Will output: hello friend

While

#!/bin/bash

evalvariable () {
     local varvar="hello friend"
}

evalvariable
echo $varvar

will output a blank line.

In fact, you don't declare variables in bash at all. You just fill them with content. The local keyword can be used to create a new variable as a local one without overwriting the global variable going by the same name:

                #!/bin/bash
                HELLO=Hello 
                function hello {
                        local HELLO=World
                        echo $HELLO
                }
                echo $HELLO
                hello
                echo $HELLO

http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-5.html

I did not. That's beyond cool!

Last edited by Awebb (2011-11-10 09:55:27)

^ well, you are right. however, i like it that Awebb mentioned that, because he said exactly what i initially thought. turns out i did not read your words closely enough, and i took 'declare' not as a method in bash but as a general word. because of this tiny discussion, everything is cleared up and i've learned something new!

^ cool! i did not know!

Retailers are feeling the pinch, too. Very few new machines (desktops or laptops) last month, and forecast for Feb not so hot, either. For the next few months, plan on sticking with what you've got...

for noobs as myself i have no clue how to use this knowledg typed most in terminal and nothing?

^ you could also just do

PAGER="most -s"

from the commandline to change it once, or add that to your ~/.bashrc to have it persistent.
(for a nice discussion on the different pagers - less, more & most - check out this thread: http://crunchbanglinux.org/forums/topic … x-is-more/)

Did you know Chuck Norris played Russian roulette with a fully loaded revolver and won?

Did You Know?

It's possible to 'hack' into a linux machine through GRUB within just a few seconds?