LQWiki - User contributions [en]

Ubuntu tips & tricks

2011-01-15T06:42:33Z

Thasuresh:

Ubuntu is a [[Debian]]-based [[distribution]]. A number of Ubuntu flavors are available in addition to the gnome-based default. These include: kubuntu (kde-based), xubuntu (XFCE4-based), edubuntu (aimed at classroom use), and a number of others.

=The unofficial Ubuntu Guide=

[http://ubuntuguide.org http://ubuntuguide.org]

There is a wealth of information here for the use, administration, and maintenance of Ubuntu.

= [[Installing software]] =
To install software, use the [http://en.wikipedia.org/wiki/GUI Gui] [http://en.wikipedia.org/wiki/Synaptic_Package_Manager Synaptic] or the [[cli]] apt-get. Example:
[[apt-get]] [[install]] [[firefox]]

[[Category:Tips]]

= Fun with Eject Command =

Lock the hardware eject button of the cdrom
$ [[eject]] -i 1

This command will lock the hardware eject button of your cdrom drive. Some uses are:

# If you have a toddler and has discovered the cdrom button
# If you are carrying a laptop in a bag or case and don’t want it to eject if the button is inadvertently pressed.

To unlock the button use:
$ eject -i 0

For more info see the [http://man-wiki.net/index.php/1:eject eject's man page].

= Forget the 'cd' command ! =
Using the ''autocd'' setting you can change into any [[directory]] without the use of <tt>cd</tt> [[command]]. To set it, type
$ shopt -s autocd
Here is how changing directories works now:
thasu@tha-admin-da ~ $ /var/log/cups/

To reside the above option as a permanent one, edit the .bashrc [[file]]
and add this line "shopt -s autocd" into it.

Enjoy

= lshw-The Hardware Lister =

lshw (Hardware Lister) is a small tool to provide detailed information on the [[hardware]] [[configuration]] of the machine. It can report exact memory configuration, firmware version, mainboard configuration, [[CPU]] version and speed, cache configuration, bus speed, etc.

In Ubuntu 10.10, It works without extra package.

$ sudo lshw

If you use [[Yum]] (Red Hat, Fedora, CentOS, etc), run the following
command in [[terminal]]:

$ yum install lshw

$ lshw

Shorter Output:

If you just quickly want to quickly find the chipset version of a
piece of hardware is, you can run the following to provide a very
short output that should give you what you need:

$ sudo lshw -short

= Linux Terminal Short Cuts =

Get lightning fast and clever at the command line

You can use keyboard shortcuts and other command line tricks to make
entering commands easier and faster. You might already know about the
‘tab’ key which completes partial commands and even file and directory
names.

Here are some other keyboard shortcuts you can use within terminal:

Ctrl-a Move to the start of the line.
Ctrl-e Move to the end of the line.
Alt-] x Moves the cursor forward to the next occurrence of x.
Alt-Ctrl-] x Moves the cursor backwards to the previous occurrence of x.
Ctrl-u Delete from the cursor to the beginning of the line.
Ctrl-k Delete from the cursor to the end of the line.
Ctrl-y Pastes text from the clipboard.
Ctrl-l Clear the screen leaving the current line at the top of the screen.
Ctrl-x Ctrl-u Undo the last changes. Ctrl-_
Alt-r Undo all changes to the line.
Alt- Ctrl-eExpand command line.
Ctrl-r Incremental reverse search of history.
Alt-p Non-incremental reverse search of history.
!! Execute last command in history
!abc Execute last command in history beginning with abc
!n Execute nth command in history
^abc^xyz Replace first occurrence of abc with xyz in last command and execute it
Ctrl-t which swaps the last 2 characters before the cursor.
Alt-d delete a word forward from cursor
Ctrl-w delete a word backword from cursor

Cheers. :)

= Difference between “cal” and “calendar” command =

Many of us know abt “cal” command. It displays the current month calendar.

But ‘calendar’ displays the history of events for current day and next day. ;)

Ex for “cal” :

$ cal
January 2011
Su Mo Tu We Th Fr Sa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31

Ex for “calendar ” :

$ calendar
Jan 13 Horatio Alger born, 1834
Jan 13 Sophie Tucker born, 1884
Jan 13 Wilhelm Wien born, 1864, Nobel prize for blackbody radiation laws
Jan 13 National Liberation Day in Togo
.
.
.
Jan 14 Albert Schweitzer born, 1875
Jan 14 Julian Calendar New Year’s Day
.
.

Ubuntu tips & tricks

2010-12-17T17:11:22Z

Thasuresh:

Ubuntu tips & tricks

2010-12-16T10:01:47Z

Thasuresh: /*The Hardware Lister */

Ubuntu tips & tricks

2010-12-15T17:40:21Z

Thasuresh: /* Forget the 'cd' command ! */

Ubuntu tips & tricks

2010-12-15T17:39:55Z

Thasuresh: /* Forget the 'cd' command ! */

Ubuntu tips & tricks

2010-12-15T17:39:22Z

Thasuresh: Forget the 'cd' command

Ubuntu tips & tricks

2010-12-10T15:06:30Z

Thasuresh: /* Fun with Eject Command */

Ubuntu tips & tricks

2010-12-10T15:02:05Z

Thasuresh: /* Fun with Eject Command */

Ubuntu tips & tricks

2010-12-10T14:45:32Z

Thasuresh: /* Fun with Eject Command */

Ubuntu tips & tricks

2010-12-10T14:43:49Z

Thasuresh: /* Fun with Eject Command */

Ubuntu tips & tricks

2010-12-10T14:40:29Z

Thasuresh: /* Lock the hardware eject button of the cdrom */