How to reverse the contents of a file? - Page 2

matrixmadhan · #6 (**permalink**) 06-05-2007

Code:

#! /opt/third-party/bin/perl

open(FILE, "<", "a");
@arr = <FILE>;
close(FILE);

for( my $i = $#arr; $i >= 0; $i-- ) {
  print "$arr[$i]" ;
}

exit 0

ghostdog74 · #7 (**permalink**) 06-05-2007

for small file

Code:

awk '{ arr[NR]=$0 }
     END{ 
        for(i=NR;i>0;i--) {
           print arr[i]
        }
     }
' "file"

vgersh99 · #8 (**permalink**) 06-05-2007

attached is a compilation of different methods.

praveenkumar_l · #9 (**permalink**) 06-06-2007

Quote:

Originally Posted by aajan

Hi Guys,
Am new to this forum .... And also to shell scripting

I need a k-shell script to reverse the contents of a file...

Please come up with the solutions...

With regards,
Anand

By reverse, you mean character by character or line by line?

ShawnMilo · #10 (**permalink**) 05-16-2008

Try playing with the -r flag on tail.

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