Once issuing the command, hit "esc" and then "k" (not together) to enter the search mode at the shell prompt (each time), and invoke the search with "/" as if you would in vi. Type a command and see the most recently used instance of that command. Use "n" and "N" to go forward and backwards through other instances of that command.

Command 'favorite' to store your favorite commands from history.

*as long as the drives are exactly the same* then this command copies the partition table on /dev/sda to /dev/sdb

This is based on the Windows Version of VirtualBox.

From the /? ...

VBoxManage clonehd |

[--format VDI|VMDK|VHD|RAW|]

[--variant Standard,Fixed,Split2G,Stream,ESX]

[--type normal|writethrough|immutable|shareable]

[--remember] [--existing]

From the online help..

http://www.virtualbox.org/manual/ch08.html#id2676537

VBoxManage clonehd

This command duplicates a registered virtual hard disk image to a new image file with a new unique identifier (UUID). The new image can be transferred to another host system or imported into VirtualBox again using the Virtual Media Manager; see the section called ?The Virtual Media Manager? and the section called ?Cloning disk images?. The syntax is as follows:

VBoxManage clonehd |

[--format VDI|VMDK|VHD|RAW|]

[--variant Standard,Fixed,Split2G,Stream,ESX]

[--type normal|writethrough|immutable]

[--remember]

where the parameters mean:

format

Allow to choose a file format for the output file different from the file format of the input file.

variant

Allow to choose a file format variant for the output file. It is a comma-separated list of variant flags. Not all combinations are supported, and specifying inconsistent flags will result in an error message.

type

Only honored if --remember is also specified. Defines what kind of hard disk type this image should be.

remember

Keep the destination image registered after it was successfully written.

It takes a few seconds until it has figured out your public ip address. You need to have 'curl' installed of course.

The -R flag prevents you from making changes to a file, useful when you only want to view the file. This command is nicer than the 'more' or 'less' commands because for source codes, vi shows syntax highlight.

This download a complete audio podcast

Muestra el crecimiento de un archivo por segundo.

Cambia el texto "FILE" por el nombre del archivo a monitorear.

Comando LS + AWK

I needed this for wine.

If you receives a lot of compiling errors, type 'clear', then reedit your code and press "SHIFT+PGUP".

Will move in that case every file in the current folder older than 30 days to the "old" folder

Replace "mv $i old/" by any command such as rm / echo to do something different.

The pipe to head removes the listing of . as the largest directory.

Yeah, there are many ways to do that.

Doing with sed by using a for loop is my favourite, because these are two basic things in all *nix environments. Sed by default does not allow to save the output in the same files so we'll use mv to do that in batch along with the sed.

cn stands for "Cat Null"

.

The idea is that sometimes you run across something on maybe a webpage - like commandlinefu - that you want to try out on your terminal. You could put a '#' in and then paste it, but what if it is several lines?

.

This command will echo the pasted characters to the screen and divert them to the bit bucket.

.

Put this simple alias in your .bashrc, hit cn, paste away, and hit a ctrl+c or a ctrl+d when you are done to get your prompt back.

Set Permission to user and group

Courtesy of LifeHacker.com (http://lifehacker.com/5625725/open-the-gnome-applications-menu-with-the-windows-key)

grep 'HOME.*' data.txt | awk '{print $2}' | awk '{FS="/"}{print $NF}'

OR

awk '/HOME/ {print $2}' data.txt | awk -F'/' '{print $NF}'

In this example, we are having a text file that is having several entries like:

---

c1 c2 c3 c4

this is some data

HOME /dir1/dir2/.../dirN/somefile1.xml

HOME /dir1/dir2/somefile2.xml

some more data

---

for lines starting with HOME, we are extracting the second field that is a 'file path with file name', and from that we need to get the filename only and ignore the slash delimited path.

The output would be:

somefile1.xml

somefile2.xml

(In case you give a -ive - pls give the reasons as well and enlighten the souls :-) )

During this operation :

# mv Joomla_1.5.10-Stable-Full_Package.zip /var/www/joomla/

I invoke /var/www/joomla/ as last command argument. To change in this directory I can use

# cd !$

So I go to

hob:/var/www/joomla#

Should do exactly the same - compress every file in the current directory. You can even use it recursively: