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Full Discussion: Replace space with !@ using sed
Top Forums Shell Programming and Scripting Replace space with !@ using sed Post 302957906 by Don Cragun on Friday 16th of October 2015 11:24:04 AM
Old 10-16-2015
There are a few problems with your attempts. You say you want to change a <space> to !@, but your sed substitutions contain !# instead of !@. You have only one parenthesized expression but you use \2 instead of \1 to refer to what was matched by that parenthesized expression. And, your 2nd sed command is inserting unwanted parentheses in the output.

Any of the following should work:
Code:
sed 's/ \(:61:\)/!@\1/g' file1 > file2
sed 's/ \(:61:\)/!@:61:/g' file1 > file2
sed 's/ :61:/!@:61:/g' file1 > file2

The last of these is the shortest and simplest, so I would probably use it.
This User Gave Thanks to Don Cragun For This Post:
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xzdiff

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xzdiff  invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1).  All options specified
       are passed directly to cmp(1) or diff(1).  If only one file is specified, then the files compared are file1 (which must have a suffix of  a
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       are uncompressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp(1) or diff(1) is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), lzop(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2011-03-19								 XZDIFF(1)
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