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File manipulation

 
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# 1  
Old 06-11-2007
File manipulation
I need to manipulate an existing file, test.txt. The length of record inside test.txt is 500 with multiple columns. I need to find out the position 145 and insert 10 blank spaces. The test.txt file could be multiple line.

Thanks,
# 2  
Old 06-11-2007
And?

Sounds all rather arbitrary, is it homework?
# 3  
Old 06-11-2007
small version of test.txt file:

ABC00010008000 BBU N S XYZABC N N

I need to add 10 black spaces starting position 10 and number 3 + two black spaces staring position 22.

help pls!!!
# 4  
Old 06-11-2007
Quote:
Originally Posted by blackjack101
help pls!!!
I'm not trying to be unhelpful, but normally people try to show they have attempted to solve the problem themselves first, or shown how far they have got. So far you have told everyone you have to do some obscure task and are expecting help that may be against the rules of the forum.

I wonder what a "black space" is.
# 5  
Old 06-11-2007
Lets see if these help:

Code:
input file data:

ABC00010008000 BBU N S XYZABC N N

Manupulation required:
1.Add 10 spaces begining of position 19.
2.Add character 0 and two spaces (i.e. "0  ") begining of position 23

Output expected:

ABC00010008000 BBU           N S 0  XYZABC N N

SO far I tried,

sed "s/\(.\{19\}\)\(.\{6\}\)/\1          \2 /" test.txt and got result of
ABC00010008000 BBU           N S XY ZABC N N

Thanks:
Last edited by Perderabo; 06-12-2007 at 12:18 AM.. Reason: Add code tags for readability
# 6  
Old 06-11-2007
This should be a good reference sed FAQ 4.13. How do I handle fixed-length, columnar data?
 
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