Split a file


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Split a file
# 1  
Split a file

Hello Masters
In Solaris8 environment.
I have a 4 Gb binary file. I want to remove 4160 bytes from the beginning of the file and keep the rest. What is your recommended commands or solutions. Speed of the operation matters also.
Thanks for your advises.
Cheers
Reza
# 2  
How about dd ?

Something on the lines of

Code:
dd if=/file/with/4GB of=/resulting/file skip=1 bs=4160

It might be possible to get better performance if you include the other dd options.
 

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #574
Difficulty: Medium
The process of allocating and deallocating memory is generally referred to as memory swapping.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

sed awk: split a large file to unique file names

Dear Users, Appreciate your help if you could help me with splitting a large file > 1 million lines with sed or awk. below is the text in the file input file.txt scaffold1 928 929 C/T + scaffold1 942 943 G/C + scaffold1 959 960 C/T +... (6 Replies)
Discussion started by: kapr0001
6 Replies

2. Shell Programming and Scripting

How to split file into multiple files using awk based on 1 field in the file?

Good day all I need some helps, say that I have data like below, each field separated by a tab DATE NAME ADDRESS 15/7/2012 LX a.b.c 15/7/2012 LX1 a.b.c 16/7/2012 AB a.b.c 16/7/2012 AB2 a.b.c 15/7/2012 LX2 a.b.c... (2 Replies)
Discussion started by: alexyyw
2 Replies

3. Shell Programming and Scripting

Split file based on file size in Korn script

I need to split a file if it is over 2GB in size (or any size), preferably split on the lines. I have figured out how to get the file size using awk, and I can split the file based on the number of lines (which I got with wc -l) but I can't figure out how to connect them together in the script. ... (6 Replies)
Discussion started by: ssemple2000
6 Replies

4. Shell Programming and Scripting

awk to split one field and print the last two fields within the split part.

Hello; I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Discussion started by: yifangt
5 Replies

5. Shell Programming and Scripting

Split a file into multiple files based on first two digits of file.

Hi , I do have a fixedwidth flatfile that has data for 10 different datasets each identified by the first two digits in the flatfile. 01 in the first two digit position refers to Set A 02 in the first two digit position refers to Set B and so on I want to genrate 10 different files from my... (6 Replies)
Discussion started by: okkadu
6 Replies

6. Shell Programming and Scripting

Split File by Pattern with File Names in Source File... Awk?

Hi all, I'm pretty new to Shell scripting and I need some help to split a source text file into multiple files. The source has a row with pattern where the file needs to be split, and the pattern row also contains the file name of the destination for that specific piece. Here is an example: ... (2 Replies)
Discussion started by: cul8er
2 Replies

7. Shell Programming and Scripting

How to split a data file into separate files with the file names depending upon a column's value?

Hi, I have a data file xyz.dat similar to the one given below, 2345|98|809||x|969|0 2345|98|809||y|0|537 2345|97|809||x|544|0 2345|97|809||y|0|651 9685|98|809||x|321|0 9685|98|809||y|0|357 9685|98|709||x|687|0 9685|98|709||y|0|234 2315|98|809||x|564|0 2315|98|809||y|0|537... (2 Replies)
Discussion started by: nithins007
2 Replies

8. Shell Programming and Scripting

Split one file to Multiple file with report basis in unix

Hi, Please help on this. i want split the below file(11020111.CLT) to more files with some condition. :b: 1) %s stating of the report 2) %e ending of the report example starting of the report: %sAEGONCA| |MUMBAI | :EXPC|N|D ending of the report %eAEGONCA| |MUMBAI | :EXPC 3)so the... (10 Replies)
Discussion started by: krbala1985
10 Replies

9. Shell Programming and Scripting

Split large file and add header and footer to each file

I have one large file, after every 200 line i have to split the file and the add header and footer to each small file? It is possible to add different header and footer to each file? (1 Reply)
Discussion started by: ashish4422
1 Replies

10. UNIX for Dummies Questions & Answers

Split a file with no pattern -- Split, Csplit, Awk

I have gone through all the threads in the forum and tested out different things. I am trying to split a 3GB file into multiple files. Some files are even larger than this. For example: split -l 3000000 filename.txt This is very slow and it splits the file with 3 million records in each... (10 Replies)
Discussion started by: madhunk
10 Replies

Featured Tech Videos