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Full Discussion: Edit lines in file preserving part of it
Top Forums Shell Programming and Scripting Edit lines in file preserving part of it Post 303041338 by Cacializ on Thursday 21st of November 2019 12:52:22 PM
Old 11-21-2019
Quote:
Originally Posted by Scrutinizer
Hi, with sed you can try:
Code:
sed 's|<td>\([0-9]\{1,\}\)</td>|<td><button onclick="reset(\1)">Reset</button>\1</td>|' file

You can add the leading tabs if you need them, but in the sample there were none so I left them out...
The part in red is a subexpression in escaped parentheses plus the back references to it in the replacement part...
This is exactly what I needed, Scrutinizer. Thank you very much! The tabs don't seem to be altered with the command you provided, so I don't think I'll need to add them.

One last question. I'm using GNU sed. Can I safely use the -i option with the replacement command you wrote to do in-place editing?
 

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LEARN ABOUT CENTOS

grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)
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