On Wed, Aug 8, 2012 at 4:34 PM, Pádraig Brady <[email protected]> wrote: > On 08/09/2012 12:08 AM, Justin Mattock wrote: >> im not on the list so please cc's me, and if this is the wrong list >> for this question then let me know so I may find the right one >> to find info. >> >> what are the tools to _prepare_ a file to be uploaded to memory(right >> now im using dd)? is there a way to not pad a file? or keep the size >> of the file without adding any padding to it so the size stays where >> it needs to be, but the info inside is aligned from start to finish >> without zero? >> >> bassically what im looking at: >> fixed block(partition) = 9,504kb >> file that needs to be uploaded to partition = 9,216 >> file padding = 288kb (how to remove this in the end of the file?) >> >> is there a program that is capable of stretching the file(9,216) so it >> fits the partition of 9,504 or am I totally doing things wrong? > > I don't understand what you mean exactly. > > If you want to write data to a particular part of a file, > look at the conv=notrunc and seek=BLOCKS options. > If you want to handle zero blocks in the input specially, > note the conv=sparse option added in version 8.16 > > cheers, > Pádraig.
cool! thanks for the info.. I will look into conv=sparse etc.. as to make sense with what im doing I have a fixed partition that needs to have the file aligned to its size before it can write to it, then once I write to it I need to have no padding in the file. from what I can see so far(might be wrong). rough view: fixed block partition size = 9,504 file size to be uploaded to fixed partition = 9,216 remaining size is = 288(padding) I need to see if I can keep the file at 9,504(so the app will upload to the partition) but insert data of 9,216 but not have whitespace in the file(padding) in any case I appreciate the response and will look into what you are saying. -- Justin P. Mattock
