This is an easy and fast tip.
We have to set up a cron job:
$ crontab -e
And then we only have to write this line:
@reboot rm -rf ~/.local/share/Trash/files/*
And that’s it, on each reboot, Trash will be emptied. I tested this on Ubuntu and Fedora.
Yum is the package manager of Fedora.It is able to install, remove, update and query packages.
First of all, if you want to work with Yum, you have to have superuser privileges, so we first log in as root:
$ su -
If we want to check if there are updates, we can use the next command:
# yum check-update
Easy, isn’t it? Next step, is update packages. We can choose whether update all or just a single one.
Updating everything:
# yum update
Updating a single one:
# yum update packagename # yum update google-chrome-stable
We are also able to make queries to find our desired package.
# yum search term1 [term2 term3 termN]
If we want to list available packages we can use:
# yum list available
To list installed packages:
# yum list installed
To retrieve information about a package we use:
# yum search packagename
To install a package:
# yum install packagename
And to remove:
# yum remove packagename
Yum is a quit powerful package manager, with a good and clear syntax.
We cannot return two variables from a function, but we could use an array for that.
So for example, in JavaScript, it would be like this:
function foo() {
// do something here
// whatever
return [myvalue, myothervalue, otherthing];
}And then, for use those values:
foo()[0] // this is myvalue foo()[1] // this is myothervalue foo()[2] // this is otherthing
This can be applied to any other language you may know. And that’s how we return more than one value from a function
By default, we can’t delete files in Nautilus 3 with delete key, as we did always, because it’s deactivated.
For enable this on Fedora 15, go to terminal and write this down:
$ gsettings set org.gnome.desktop.interface can-change-accels true
Then go to a nautilus window, click on Edit menu and put the mouse over (don’t press, only hover) ”Delete” and press delete key. You will see the new shortcut at the right.
Once you’ve done it, I recommend to turn it off again:
$ gsettings set org.gnome.desktop.interface can-change-accels false
If you use ubuntu you can use dconf-editor. Press ALT+F2 and write dconf-editor and then follow this path: org > gnome > desktop > interface and check can-change-accels.
Then, do the same as in Fedora, but you may have to hit the key twice.
Don’t forget to uncheck the box for preventing changing other shortcuts.