Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

Re^2: removing lines that are in the end of a file

by bhargavkanakiya (Initiate)
on Apr 19, 2013 at 09:33 UTC ( #1029490=note: print w/ replies, xml ) Need Help??


in reply to Re: removing lines that are in the end of a file
in thread removing lines that are in the end of a file

Thanks a lot to you. This also removes the last line with SIL. This is not how i wanted but still you have made my task a lot easier. I can add last SIL using other software that i am currently working on.


Comment on Re^2: removing lines that are in the end of a file
Replies are listed 'Best First'.
Re^3: removing lines that are in the end of a file
by BrowserUk (Pope) on Apr 19, 2013 at 12:46 UTC
    This also removes the last line with SIL. This is not how i wanted

    ReadBackwards() has to do strange things with tell, so a little extra work is involved. Try this version:

    #! perl -slw use strict; use File::ReadBackwards; my $file = $ARGV[ 0 ]; tie *BW, 'File::ReadBackwards', $file; my $lastpos = -s( $file ); my $len = 0; while( <BW> ) { $len = length() +1; next unless length >1; last unless /SIL/; $lastpos = tell( BW ); } truncate $file, $lastpos + $len; close BW;

    Note: You won't need the +1 in the  $len = length() +1; line if you are not on Windows.


    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1029490]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (10)
As of 2015-07-30 10:12 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (271 votes), past polls