Is it possible to merge files using dd command?

09-29-2009

#1 (permalink)

Lakshmipathi

Linux Engineer

Join Date: Sep 2006

Location: 3rd rock from sun

Posts: 1,093

Is it possible to merge files using dd command?

I'm exploring GlusterFS,some where I read , large files are split using "Split translator"..and could be merged
again using dd command.

So my question is : how to merge it?

I tried this

Quote:

#cat file1

This is file 1

#cat file2

This is file 2

#dd if=file1 of=file3
#dd if=file2 of=file3

But clearly dd command overwrite the content from file1 ,with file2 contents and creates file3.

__________________
- Lakshmipathi.G
-------------------
FOSS India Award winning ext3fs Undelete tool and tutorials www.giis.co.in
First they criticize you,Then they laugh at you,Then they fight with you,Then you win. - M.K.Gandhi
-------------------

09-29-2009	#2 (permalink)
tpl Linux User Join Date: Jan 2007 Location: cleveland Posts: 370	the usual command is "split <filename>" then use cat to restore "cat xaa xab xac xad xae xaf > <filename>" __________________ the sun is new every day (heraclitus)

10-01-2009	#3 (permalink)
Lakshmipathi Linux Engineer Join Date: Sep 2006 Location: 3rd rock from sun Posts: 1,093	thanks tpl. Could it be done using dd command.? As I said there are big files ..i also read some where about dd'ing files ...I search and get back with answers (If any) __________________ - Lakshmipathi.G ------------------- FOSS India Award winning ext3fs Undelete tool and tutorials www.giis.co.in First they criticize you,Then they laugh at you,Then they fight with you,Then you win. - M.K.Gandhi -------------------

10-01-2009	#4 (permalink)
Lostfarmer Linux Newbie Join Date: Dec 2007 Location: Idaho USA Posts: 176	Never used but read: Unix dd command and image creation go down to paragraph titled: "Getting around file size limitations using split" might be what you want.

10-08-2009	#5 (permalink)
Lakshmipathi Linux Engineer Join Date: Sep 2006 Location: 3rd rock from sun Posts: 1,093	Thanks for the link..i'll check it, Lostfarmer __________________ - Lakshmipathi.G ------------------- FOSS India Award winning ext3fs Undelete tool and tutorials www.giis.co.in First they criticize you,Then they laugh at you,Then they fight with you,Then you win. - M.K.Gandhi -------------------

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