Keep in mind that modern versions of Perl added some extra goodies to the -i value (from perlrun):
If the extension doesn't contain a "*", then it is appende
+d to the
end of the current filename as a suffix. If the extension
+ does
contain one or more "*" characters, then each "*" is repla
+ced with
the current filename. In Perl terms, you could think of t
+his as:
($backup = $extension) =~ s/\*/$file_name/g;
This allows you to add a prefix to the backup file, instea
+d of (or
in addition to) a suffix:
$ perl -pi'orig_*' -e 's/bar/baz/' fileA # backup t
+o 'orig_fileA'
Or even to place backup copies of the original files into
+another
directory (provided the directory already exists):
$ perl -pi'old/*.orig' -e 's/bar/baz/' fileA # backup
+to 'old/fileA.orig'
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|