All commands

Note: Replace 200000 with drive bytes/512, and /dev/sdx with the destination drive/partition. ;)

Note: You may need to install pipebench, this is easy with "sudo apt-get install pipebench" on Ubuntu.

The reason I hunted around for the pieces to make up this command is that I wanted to specifically flip all of the bits on a new HDD, before running an Extended SMART Self-Test (actually, the second pass, as I've already done one while factory-zeroed) to ensure there are no physical faults waiting to compromise my valuable data. There were several sites that came up in a Google search which had a zero-fill command with progress indicator, and one or two with a fill-with-ones command, but none that I could find with these two things combined (I had to shuffle around the dd command(s) to get this to happen without wasting speed on an md5sum as well).

For reference, these are the other useful-looking commands I found in my search:

Zero-fill drive "/dev/sdx", with progress indicator and md5 verification (run sudo fdisk -l to get total disk bytes, then divide by 512 and enter the resulting value into this command for a full wipe)

And this command for creating a file filled with ones is my other main source (besides the above command and man pages, that is - I may be a Linux newbie but I do read!):

Hope someone finds this useful! :)

Cheers,

- Gliktch

Install using yum install yum-utils

Options include:

--oldkernels Remove old kernel and kernel-devel packages

--count=KERNELCOUNT Number of kernel packages to keep on the system (default 2)

use package-cleanup --help for a complete list

Tail curren postfix maillog.

if you use disk-based swap then it can defeat the purpose of this function.

Creates an image for using as a "shared folder" by multiple users on the same computer. Mac has a shared folder for the usage by all local users on the same computer, but using this folder has some drawbacks (depending on what the users like to do).

* A file can only be deleted by owner (can be solved by setting sticky bit correctly).

* Files can only be changed by owner (could be solved with help of ACLs, but not all programs supports that - like Photoshop)

This behavior is good if you don't trust the other local users. But if you trust them, and e.g. like to share iPhoto- or iTunes-library, it could become troublesome to manage all that file permission stuff correcly.

So using the image created by this command avoids this drawbacks. This command creates an image, which is

* able to backed up by Time Machine, as it transparently consists of many 8 MB files,

* encrypted by 256 bit AES encryption (if not needed, remove "-encrytion AES-256" part from command),

* ignores files security as it is formatted with MS-DOS FAT32 filesystem,

* automatically grows as necessary (so maxBundleSize can be set to e.g. 1t (1 TB)).

Put the created file to /Users/Shared/ and change file permissions to give read/write access to each user separately by Finder. After that drag that file to startup objects of each user. Put password into keychain access.

A short variant if you have only one directory whit only audio files in it.

Standard command, but I always have to search for it... ;-)

'ps' let you specify the format that you want to see on the output.

the google-api gives you only one translation which is sometimes insufficent. this function gives you all translations, so you can choose which one fits best.