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Full Discussion: Sed, how replace specific symbols between two patterns
Top Forums Shell Programming and Scripting Sed, how replace specific symbols between two patterns Post 303015169 by Tapiocapioca on Thursday 29th of March 2018 01:16:18 PM
Old 03-29-2018
Sed, how replace specific symbols between two patterns
I have a big xmltv file with many lines like:

Code:
<?xml version="1.0" encoding="UTF-8"?>
    <tv>
        <channel id="channel 1 +3HD">
            <display-name lang="it">channel +3HD</display-name>
            <icon src="http://mywebsite.com/dsgbnjfdc65657/channel +3HD.png" />
        </channel>
        <channel id="channel 4 HD">
            <display-name lang="it">channel 4 HD</display-name>
            <icon src="http://mywebsite.com/dsgbnjfdc65657/channel 4 HD.png" />
        </channel>
        <channel id="channel 8 ?? HD">
            <display-name lang="it">channel 8 ?? HD</display-name>
            <icon src="http://mywebsite.com/dsgbnjfdc65657/channel 8 ?? HD.png" />
        </channel>
    </tv>

I don't know why my webserver reject some names of png files, so I am trying to rename it.
I am trying to use the command sed but I am really bad about.
I want replace the spaces, the symbol +, the symbol ? and others with underscore _
I tought to use like a pattern the strings dsgbnjfdc65657/ and .png and modify the spaces, the symbol + and ? between, but I had back only errors...


I tried also with xmlstarlet to replace "spaces" with "_" but also I had only errors

Code:
mlstarlet ed -L -u '//icon/@src=" "' -v _ tv.xml

I really prefer if I can use sed

Can someone help me?
Last edited by Scrutinizer; 03-29-2018 at 03:40 PM.. Reason: quote tags -> code tags
 

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LEARN ABOUT REDHAT

iinfo

IINFO(1)                                                      General Commands Manual                                                     IINFO(1)

NAME

       iinfo - print information about images

SYNOPSIS

       iinfo [options] files...

DESCRIPTION

       The iinfo utility is invoked as follows:

       iinfo [options] filename...

       Where  filename (and any following strings) names the image file(s) whose information should be printed. The image files may be of any for-
       mat recognized by OpenImageIO (i.e., for which ImageInput plugins are available).

       In its most basic usage, it simply prints the resolution, number of channels, pixel data type, and file format type of each  of  the  files
       listed:

       $ iinfo img_6019m.jpg grid.tif lenna.png
       img_6019m.jpg : 1024 x  683, 3 channel, uint8 jpeg
       grid.tif      :  512 x  512, 3 channel, uint8 tiff
       lenna.png     :  120 x  120, 4 channel, uint8 png

       For a complete description, see /usr/share/doc/libopenimageio-dev/openimageio.pdf.gz.

OPTIONS

       --help Print help message

       -v     Verbose output

       -m %s  Metadata names to print (default: all)

       -f     Prefix each line with the filename

       -s     Sum the image sizes

       -a     Print info about all subimages

       --hash Print SHA-1 hash of pixel values

       --stats
              Print image pixel statistics (data window)

SEE ALSO

       iconvert(1), idiff(1), igrep(1), iprocess(1), iv(1), maketx(1), oiiotool(1).

AUTHOR

       OpenImageIO was written by Larry Gritz and the other authors and contributors.

       This manual page was written by IRIE Shinsuke <irieshinsuke@yahoo.co.jp>, for the Debian project (and may be used by others).

                                                                   May 19, 2012                                                           IINFO(1)
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