Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Move text in a unix flat file

Posted on 2006-11-22
5
Medium Priority
?
416 Views
Last Modified: 2013-12-26
I've got a file of IDs that basically looks as follows :

123456789AAAAA
123456790AAAAA
123456791AAAAA

and I want to edit that file (into another file) and swap the data elements around so that it looks like :

AAAAA123456789
AAAAA123456790
AAAAA123456791

(ie 5 char code followed by 9 char code)

How can I do that in one statement?  I managed to use cut so that that I could get the 9 chars :

cat file_in | cut -c0-9 > file_out

but that's not enough.  Do I need a sed statement?
0
Comment
Question by:JoHarris
  • 4
5 Comments
 
LVL 11

Accepted Solution

by:
cjjclifford earned 1000 total points
ID: 17995248
you don't even need the cut, a simple "sed" will do it...


sed 's/^\(.....\)\(.........\)/\2\1/' file_in > file_out

Note this is hardcoded to 5 leading characters, and 9 trailing characters...

0
 
LVL 11

Expert Comment

by:cjjclifford
ID: 17995255
That will transpose the first 14 characters, leaving anything else in the line in-place. If this is not desirable then extend the regex:

sed  's/^\(.....\)\(.........\).*$/\2\1/'


Also, you may want to search for matches that are strictly characters ([A-Z]) or strictly numerics ([0-9]) rather than any 5/9 characters.
0
 
LVL 11

Expert Comment

by:cjjclifford
ID: 17995292
Also, using bounds may be an easier way of argumenting the number of characters...

so...

using bounds, and strictly characters/numbers, stripping any suplurfous characters after first 14:

sed 's/^\([A-Z]\{5\}\)\([0-9]\{9\}\).*$/\2\1/' in_file > out_file


e.g.

$ echo ABCDE123456789extra | sed 's/^\([A-Z]\{5\}\)\([0-9]\{9\}\).*$/\2\1/'
123456789ABCDE

0
 

Author Comment

by:JoHarris
ID: 17995325
Thats great thanks - the flat file will always contain the 9 followed by the 5 so the 1st one works a treat.

Thanks for helping me out so quickly!
0
 
LVL 11

Expert Comment

by:cjjclifford
ID: 17995347
:-)
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Load and Save to file, Document-View interaction inside the SDI. Continuing from the second article about sudoku.   Open the project in visual studio. From the class view select CSudokuDoc and double click to open the header …
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
Suggested Courses
Course of the Month11 days, 21 hours left to enroll

564 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question