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file::inplace(3) [centos man page]

File::Inplace(3)					User Contributed Perl Documentation					  File::Inplace(3)

NAME
File::Inplace - Perl module for in-place editing of files SYNOPSIS
use File::Inplace; my $editor = new File::Inplace(file => "file.txt"); while (my ($line) = $editor->next_line) { $editor->replace_line(reverse $line); } $editor->commit; DESCRIPTION
File::Inplace is a perl module intended to ease the common task of editing a file in-place. Inspired by variations of perl's -i option, this module is intended for somewhat more structured and reusable editing than command line perl typically allows. File::Inplace endeavors to guarantee file integrity; that is, either all of the changes made will be saved to the file, or none will. It also offers functionality such as backup creation, automatic field splitting per-line, automatic chomping/unchomping, and aborting edits partially through without affecting the original file. CONSTRUCTOR
File::Inplace offers one constructor that accepts a number of parameters, one of which is required. File::Inplace->new(file => "filename", ...) file The one required parameter. This is the name of the file to edit. suffix The suffix for backup files. If not specified, no backups are made. chomp If set to zero, then automatic chomping will not be performed. Newlines (actually, the contents of $/) will remain in strings returned from "next_line". Additionally, the contents of $/ will not be appended when replacing lines. regex If specified, then each line will be split by this parameter when using "next_line_split" method. If unspecified, then this defaults to s+. separator The default character used to join each line when replace_line is invoked with a list instead of a single value. Defaults to a single space. INSTANCE METHODS
$editor->next_line () In scalar context, it returns the next line of the input file, or undef if there is no line. In an array context, it returns a single value of the line, or an empty list if there is no line. $editor->replace_line (value) Replaces the current line in the output file with the specified value. If passed a list, then each valie is joined by the "separator" specified at construction time. $editor->next_line_split () Line "next_line", except splits based on the "regex" specified in the constructor. $editor->has_lines () Returns true if the file contains any further lines. $editor->all_lines () Returns an array of all lines in the file being edited. $editor->replace_all_lines (@lines) Replaces all remaining lines in the file with the specified @lines. $editor->commit () Completes the edit operation and saves the changes to the edited file. $editor->rollback () Aborts the edit process. $editor->commit_to_backup () Saves edits to the backup file instead of the original file. AUTHOR
Chip Turner, <chipt@cpan.org> COPYRIGHT AND LICENSE
Copyright (C) 2005 by Chip Turner This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.6.0 or, at your option, any later version of Perl 5 you may have available. POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 283: You forgot a '=back' before '=head1' Around line 285: '=item' outside of any '=over' perl v5.16.3 2005-01-29 File::Inplace(3)

Check Out this Related Man Page

ex(1)							      General Commands Manual							     ex(1)

Name
       ex, edit - text editor

Syntax
       ex [ - ] [ -v ] [ -x ] [ -t tag ] [ -r ] [ +command ] [ -l ] name...
       edit [ ex options ]

Description
       The  editor  is	the  root  of a family of editors: and The editor is a superset of with the most notable extension being a display-editing
       facility.  Display-based editing is the focus of

       The name argument indicates the files to be edited.

Options
       -    Suppresses all interactive-user feedback.  This option is useful in processing editor scripts in command files.

       -v   Equivalent to using rather than

       -t   Equivalent to an initial tag command, that is, editing the file containing the tag and positioning the editor at its definition.

       -r   Used to recover after an editor or system crash.  It recovers by retrieving the last saved version of the named file.  If no  file	is
	    specified, it displays a list of saved files.

       -R   Sets the read-only option at the start.

       +command
	    Indicates  that  the editor should begin by executing the specified command.  If the command is omitted, it defaults to $, positioning
	    the editor at the last line of the first file, initially.  Other useful commands here are scanning patterns of the form  +/pattern	or
	    line numbers.

       -l   Sets up for LISP.  That is, it sets the showmatch and lisp options.  The -x option is available only if the Encryption layered product
	    is installed.

       -x   Causes to prompt for a key. The key is used to encrypt and decrypt the contents of the file. If the file contents have been  encrypted
	    with one key, you must use the same key to decrypt them.

Restrictions
       The command causes all marks to be lost on lines changed and then restored if the marked lines were changed.

       The command does not clear the buffer modified condition.

       The z command prints a number of logical rather than physical lines.  More than a screenful of output may result if long lines are present.

       File input/output errors do not print a name if the command line minus sign (-) option is used.

       There is no easy way to do a single scan ignoring case.

       The editor does not warn you if you place text in named buffers and do not use it before exiting the editor.

       Null characters are discarded from input files, and cannot appear in output files.

Files
       /usr/lib/ex?.?recover	     recover command
       /usr/lib/ex?.?preserve	     preserve command
       /etc/termcap		terminal capabilities
       ~/.exrc			editor startup file
       /tmp/Exnnnnn		editor temporary
       /tmp/Rxnnnnn		named buffer temporary
       /usr/preserve		preservation directory

See Also
       awk(1), ed(1), grep(1), sed(1), vi(1), termcap(5), environ(7)
       "Edit: A Tutorial" and the "Ex Reference Manual" in the
       Supplementary Documents, Volume 1: General User

																	     ex(1)
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