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Top Forums Shell Programming and Scripting Compare two files and remove all the contents of one file from another Post 302259340 by royalibrahim on Monday 17th of November 2008 11:55:42 PM
Old 11-18-2008
Thanks to you all for the suggestions. But anyone has any awk, perl code to do this task?

And Also, the below perl code will remove duplicate, non-consecutive lines based on the last field without sorting. Now, please tell me, what should I change in this code in order to print unique lines of a file by just not seeing the last field but the entire line (the whole record)?
Code:
perl -ane'print unless $_{$F[-1]}++'

 

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RM(1)								   User Commands							     RM(1)

NAME
rm - remove files or directories SYNOPSIS
rm [OPTION]... FILE... DESCRIPTION
This manual page documents the GNU version of rm. rm removes each specified file. By default, it does not remove directories. If a file is unwritable, the standard input is a tty, and the -f or --force option is not given, rm prompts the user for whether to remove the file. If the response does not begin with `y' or `Y', the file is skipped. OPTIONS
Remove (unlink) the FILE(s). -d, --directory unlink FILE, even if it is a non-empty directory (super-user only) -f, --force ignore nonexistent files, never prompt -i, --interactive prompt before any removal -r, -R, --recursive remove the contents of directories recursively -v, --verbose explain what is being done --help display this help and exit --version output version information and exit To remove a file whose name starts with a `-', for example `-foo', use one of these commands: rm -- -foo rm ./-foo Note that if you use rm to remove a file, it is usually possible to recover the contents of that file. If you want more assurance that the contents are truly unrecoverable, consider using shred. AUTHOR
Written by Paul Rubin, David MacKenzie, Richard Stallman, and Jim Meyering. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
shred(1) The full documentation for rm is maintained as a Texinfo manual. If the info and rm programs are properly installed at your site, the com- mand info rm should give you access to the complete manual. rm (coreutils) 4.5.3 October 2002 RM(1)
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