Solved

How to delete/convert conrol character (LF,CR) from text file ?

Posted on 2009-04-04
5
735 Views
Last Modified: 2012-05-06
Windows and DOS uses a pair of CR and LF characters to terminate lines. UNIX (Including Linux and FreeBSD) uses an LF character only. The Apple Macintosh  uses a CR character only.

can some one let me know how to convert text file and delete the control character form text file?
I got to know only how to convert windows text file in unix, and that is perl -i.bak -pe "s/\r//g" file as shared by ozo in my previous post.

Can some one give me perl one-liner to do all the appropriate conversion in text file between hardware platform?
0
Comment
Question by:beer9
  • 3
5 Comments
 
LVL 4

Accepted Solution

by:
blissbear earned 250 total points
ID: 24070210
dos to unix:
perl -i.bak -pe "s/\r//g"

unix to dos:
perl -i.bak -pe "s/\n/\r\n/g"

mac to unix:
perl -i.bak -pe "s/\r/\n/g"

unix to mac:
perl -i.bak -pe "s/\n/\r/g"

mac to dos:
perl -i.bak -pe "s/\n/\r\n/g"

dos to mac:
perl -i.bak -pe "s/\n//g"
0
 
LVL 4

Expert Comment

by:blissbear
ID: 24070214
the regex expression s/x/y/ will replace the x string with y.
0
 
LVL 4

Expert Comment

by:blissbear
ID: 24070219
on a side note be careful you know what format you are converting from.

If you run dos->mac and then dos->unix on the same data stream you are going to end up stripping all the CR and LF characters.
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24071474
Linux has a command just for this:

dos2unix oldfile.txt > newfile.txt

0
 

Author Closing Comment

by:beer9
ID: 31566702
Thanks! :)
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

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

On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
Email validation in proper way is  very important validation required in any web pages. This code is self explainable except that Regular Expression which I used for pattern matching. I originally published as a thread on my website : http://www…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

776 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