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Top Forums UNIX for Beginners Questions & Answers Views How to replace a CRLF char from a variable length file in the middle of a string in UNIX? Post 303021910 by wbport on Monday 20th of August 2018 11:53:56 AM
Old 08-20-2018
I see if your 1234 line is followed by a 1123 line you don't want to combine lines. For the following I assume your data will never have a tilde character "~". If it does substitute some other "never happen" character or stream of characters in the sed command file.

Here I change the newline to a tilde. If the characters after that are 1123, change the tilde back to a newline. If not, delete the tilde and the line following 1234 will remain appended.

HTH
Code:
/^1234/ {
         N
         s/\n/~/
         s/~1123/\n1123/
         s/~//
        }

 

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XFM_MIME.TYPES(5)							XFM							 XFM_MIME.TYPES(5)

NAME
xfm_mime.types - suffix based fall back mime type information DESCRIPTION
When xfm(1) cannot determine the type of a file using the values in xfm_magic(5), this file is used to guess a type of a file. The file shipped with xfm by default just tells to include the files ~/.mime.types and /etc/mime.types to get the system wide settings. FORMAT
There is one entry per line. Empty lines and lines starting with a hash (#) are ignored. Prior entries overwrite later ones. If a line starts with !include or include the rest of the line is treated as a filename to process before continuing with the rest of the file. (If the filename starts with a tilde followed by a slash, the tilde is replaced by the content of the HOME environment variable.) Other lines contain the name of a mime type followed by an arbitrary number of filename suffixes, separated by spaces or tabs. A file that got no other type associated by content and whose name ends with a dot followed by the specified suffix, will be treated as type mime type. Xfm only recognizes suffixes with at most 7 characters. EXAMPLES
Otherwise unidentified files anding in .c are treated as text/x-csrc: text/x-csrc c Same with .c++, cpp, cxx or cc as text/x-c++src: text/x-c++src c++ cpp cxx cc FILES
$HOME/.xfm/xfm_mime.types Unless xfm(1) is told to look at a different place via X resource Xfm.mimeTypesFile, this is the first place xfm looks for a file with the describes format. /etc/X11/xfm/xfm_mime.types If the first file does not exists, xfm(1) (unless it gets told a different place via the X resource Xfm.systemwideMimeTypesFile) looks for this file. $HOME/.mime.types General user settings normaly included from /etc/X11/xfm/xfm_mime.types /etc/mime.types General system wide settings normaly included from /etc/X11/xfm/xfm_mime.types SEE ALSO
xfm(1) xfm 20 April, 2006 XFM_MIME.TYPES(5)
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