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Full Discussion: Search File content.
Top Forums UNIX for Dummies Questions & Answers Search File content. Post 302232411 by manosubsulo on Thursday 4th of September 2008 11:36:39 AM
Old 09-04-2008
cat File.txt
95671660:Jones:Sarah:45:sales manager
93272658:Smith:John:43:technical manager
98781987:Williams:Nick:35:computer officer
99893878:Brown:Sarah:12:electrician
95673456:Couchavid:26:chef
95437869:Anderson:Sarah:19:CEO

awk -F':' '{print $2,$3,$1,$4,$5}' File.txt | sort
 

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Path::Class(3)						User Contributed Perl Documentation					    Path::Class(3)

NAME
Path::Class - Cross-platform path specification manipulation VERSION
version 0.33 SYNOPSIS
use Path::Class; my $dir = dir('foo', 'bar'); # Path::Class::Dir object my $file = file('bob', 'file.txt'); # Path::Class::File object # Stringifies to 'foo/bar' on Unix, 'fooar' on Windows, etc. print "dir: $dir "; # Stringifies to 'bob/file.txt' on Unix, 'bobfile.txt' on Windows print "file: $file "; my $subdir = $dir->subdir('baz'); # foo/bar/baz my $parent = $subdir->parent; # foo/bar my $parent2 = $parent->parent; # foo my $dir2 = $file->dir; # bob # Work with foreign paths use Path::Class qw(foreign_file foreign_dir); my $file = foreign_file('Mac', ':foo:file.txt'); print $file->dir; # :foo: print $file->as_foreign('Win32'); # foofile.txt # Interact with the underlying filesystem: # $dir_handle is an IO::Dir object my $dir_handle = $dir->open or die "Can't read $dir: $!"; # $file_handle is an IO::File object my $file_handle = $file->open($mode) or die "Can't read $file: $!"; DESCRIPTION
"Path::Class" is a module for manipulation of file and directory specifications (strings describing their locations, like '/home/ken/foo.txt' or 'C:WindowsFoo.txt') in a cross-platform manner. It supports pretty much every platform Perl runs on, including Unix, Windows, Mac, VMS, Epoc, Cygwin, OS/2, and NetWare. The well-known module File::Spec also provides this service, but it's sort of awkward to use well, so people sometimes avoid it, or use it in a way that won't actually work properly on platforms significantly different than the ones they've tested their code on. In fact, "Path::Class" uses "File::Spec" internally, wrapping all the unsightly details so you can concentrate on your application code. Whereas "File::Spec" provides functions for some common path manipulations, "Path::Class" provides an object-oriented model of the world of path specifications and their underlying semantics. "File::Spec" doesn't create any objects, and its classes represent the different ways in which paths must be manipulated on various platforms (not a very intuitive concept). "Path::Class" creates objects representing files and directories, and provides methods that relate them to each other. For instance, the following "File::Spec" code: my $absolute = File::Spec->file_name_is_absolute( File::Spec->catfile( @dirs, $file ) ); can be written using "Path::Class" as my $absolute = Path::Class::File->new( @dirs, $file )->is_absolute; or even as my $absolute = file( @dirs, $file )->is_absolute; Similar readability improvements should happen all over the place when using "Path::Class". Using "Path::Class" can help solve real problems in your code too - for instance, how many people actually take the "volume" (like "C:" on Windows) into account when writing "File::Spec"-using code? I thought not. But if you use "Path::Class", your file and directory objects will know what volumes they refer to and do the right thing. The guts of the "Path::Class" code live in the Path::Class::File and Path::Class::Dir modules, so please see those modules' documentation for more details about how to use them. EXPORT The following functions are exported by default. file A synonym for "Path::Class::File->new". dir A synonym for "Path::Class::Dir->new". If you would like to prevent their export, you may explicitly pass an empty list to perl's "use", i.e. "use Path::Class ()". The following are exported only on demand. foreign_file A synonym for "Path::Class::File->new_foreign". foreign_dir A synonym for "Path::Class::Dir->new_foreign". tempdir Create a new Path::Class::Dir instance pointed to temporary directory. my $temp = Path::Class::tempdir(CLEANUP => 1); A synonym for "Path::Class::Dir->new(File::Temp::tempdir(@_))". Notes on Cross-Platform Compatibility Although it is much easier to write cross-platform-friendly code with this module than with "File::Spec", there are still some issues to be aware of. o On some platforms, notably VMS and some older versions of DOS (I think), all filenames must have an extension. Thus if you create a file called foo/bar and then ask for a list of files in the directory foo, you may find a file called bar. instead of the bar you were expecting. Thus it might be a good idea to use an extension in the first place. AUTHOR
Ken Williams, KWILLIAMS@cpan.org COPYRIGHT
Copyright (c) Ken Williams. All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
Path::Class::Dir, Path::Class::File, File::Spec perl v5.18.2 2017-10-06 Path::Class(3)
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