07-10-2013
For multiline problems, you need a looper, a script that has an N, a $ test and a branch t or b, so you can pile up lines in the buffer. Duplicates would need to be sorted to be adjacent, and 'sort -u' or 'uniq' if already sorted, will get them, simpler. You do not have associative arrays like bash, awk, perl in sed to record all and detect dups in an unsorted file.
Don't think of it as one sed command, but one sed instance running a script.
5 and 6 are just this script line: s/[)(]/\\&/g
I find it is better to put looper functionality in a separate sed instance on the pipe. Sometimes, for speed, I chain many sed in a row, so each holds the line the least time.
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LEARN ABOUT OSX
file::remove
File::Remove(3) User Contributed Perl Documentation File::Remove(3)
NAME
File::Remove - Remove files and directories
SYNOPSIS
use File::Remove 'remove';
# removes (without recursion) several files
remove( '*.c', '*.pl' );
# removes (with recursion) several directories
remove( 1, qw{directory1 directory2} );
# removes (with recursion) several files and directories
remove( 1, qw{file1 file2 directory1 *~} );
# trashes (with support for undeleting later) several files
trash( '*~' );
DESCRIPTION
File::Remove::remove removes files and directories. It acts like /bin/rm, for the most part. Although "unlink" can be given a list of
files, it will not remove directories; this module remedies that. It also accepts wildcards, * and ?, as arguments for filenames.
File::Remove::trash accepts the same arguments as remove, with the addition of an optional, infrequently used "other platforms" hashref.
SUBROUTINES
remove
Removes files and directories. Directories are removed recursively like in rm -rf if the first argument is a reference to a scalar that
evaluates to true. If the first arguemnt is a reference to a scalar then it is used as the value of the recursive flag. By default it's
false so only pass 1 to it.
In list context it returns a list of files/directories removed, in scalar context it returns the number of files/directories removed. The
list/number should match what was passed in if everything went well.
rm
Just calls remove. It's there for people who get tired of typing remove.
clear
The "clear" function is a version of "remove" designed for use in test scripts. It takes a list of paths that it will both initially delete
during the current test run, and then further flag for deletion at END-time as a convenience for the next test run.
trash
Removes files and directories, with support for undeleting later. Accepts an optional "other platforms" hashref, passing the remaining
arguments to remove.
Win32
Requires Win32::FileOp.
Installation not actually enforced on Win32 yet, since Win32::FileOp has badly failing dependencies at time of writing.
OS X
Requires Mac::Glue.
Other platforms
The first argument to trash() must be a hashref with two keys, 'rmdir' and 'unlink', each referencing a coderef. The coderefs will be
called with the filenames that are to be deleted.
SUPPORT
Bugs should always be submitted via the CPAN bug tracker
http://rt.cpan.org/NoAuth/ReportBug.html?Queue=File-Remove <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=File-Remove>
For other issues, contact the maintainer.
AUTHOR
Adam Kennedy <adamk@cpan.org>
COPYRIGHT
Some parts copyright 2006 - 2012 Adam Kennedy.
Taken over by Adam Kennedy <adamk@cpan.org> to fix the "deep readonly files" bug, and do some package cleaning.
Some parts copyright 2004 - 2005 Richard Soderberg.
Taken over by Richard Soderberg <perl@crystalflame.net> to port it to File::Spec and add tests.
Original copyright: 1998 by Gabor Egressy, <gabor@vmunix.com>.
This program is free software; you can redistribute and/or modify it under the same terms as Perl itself.
perl v5.16.2 2012-03-18 File::Remove(3)