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Full Discussion: Shell scripting and ls -1 problem
Top Forums Shell Programming and Scripting Shell scripting and ls -1 problem Post 302350434 by cfajohnson on Thursday 3rd of September 2009 08:45:59 PM
Old 09-03-2009
Quote:
Originally Posted by methyl
A more robust approach which preserves space characters in filenames and works for any number of files is:

That is less robust than my suggestion. It will fail if there is a newline (heaven forbid!) in a file name. It also uses an unnecessary external command.

It will also fail if there is leading or trailing whitespace in any filenames. Or if there are any backslashes.

The syntax I used will work no matter what pathological characters are in the filenames.
Quote:
Code:
#!/bin/sh
ls -1 mytest.sh | while read filename


The -1 is not needed because the output of ls is not going to a terminal.

I think you meant:

Code:
ls test | while IFS= read -r filename

Quote:
do
sed -e 's/bob/manny/g' "${filename}" > "${filename}.0"
mv "${filename}.0" "${filename}"

You should check that sed succeeded before wiping the original file:

Code:
   sed -e 's/bob/manny/g' "${filename}" > "${filename}.0" &&
   mv "${filename}.0" "${filename}"[/QUOTE]

 

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LEARN ABOUT SUSE

cpanplus::shell

CPANPLUS::Shell(3pm)					 Perl Programmers Reference Guide				      CPANPLUS::Shell(3pm)

NAME

       CPANPLUS::Shell

SYNOPSIS

	   use CPANPLUS::Shell; 	    # load the shell indicated by your
					    # config -- defaults to
					    # CPANPLUS::Shell::Default

	   use CPANPLUS::Shell qw[Classic]  # load CPANPLUS::Shell::Classic;

	   my $ui      = CPANPLUS::Shell->new();
	   my $name    = $ui->which;	    # Find out what shell you loaded

	   $ui->shell;			    # run the ui shell

DESCRIPTION

       This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS"
       shell.

       Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic
       loading class), so please consult the documentation of your shell of choice.

BUG REPORTS

       Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>.

AUTHOR

       This module by Jos Boumans <kane@cpan.org>.

COPYRIGHT

       The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved.

       This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.

SEE ALSO

       CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp

perl v5.12.1							    2010-04-26						      CPANPLUS::Shell(3pm)
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