Break a file into smaller pieces with same search string Post: 303023866

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Top Forums Shell Programming and Scripting Break a file into smaller pieces with same search string Post 303023866 by Don Cragun on Tuesday 25th of September 2018 04:23:01 AM

09-25-2018

Registered User

I am extremely disappointed that after observing us helping other users for more than 2.5 years and helping you with two other problems, you are unwilling to clearly show us what output(s) you're trying to produce, to show us what you have tried, and to show us the output(s) that your attempt(s) have produced.

If I am correctly interpreting your request to be to copy lines from a file named input.xml into a file named output.ranx.xml with all sequences of lines in your input file starting with a line containing the string <expression> up to and including a line containing the string </expression> deleted, you could try something like:

Code:

sed '/<expression>/,/<\/expression>/d' input.xml > output.ranx.xml

which with your given sample input would create a file named output.ranx.xml containing the text:

Code:

......................
.......................
.......................

When I first read your post #1, I had guessed that you wanted to create multiple output files with each of those output files containing one matched set of lines starting with a line containing the string <expression> and ending with the string </expression> but since you have specified that there is to only be one output file, that obviously can't be what you're trying to do. And re-reading your first post, I also see that this would not delete the matched lines as requested, so that can't be what you want.

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LEARN ABOUT NETBSD

split

SPLIT(1)						    BSD General Commands Manual 						  SPLIT(1)

NAME

     split -- split a file into pieces

SYNOPSIS

     split [-a suffix_length] [-b byte_count[k|m] | -l line_count -n chunk_count] [file [name]]

DESCRIPTION

     The split utility reads the given file and breaks it up into files of 1000 lines each.  If file is a single dash or absent, split reads from
     the standard input.  file itself is not altered.

     The options are as follows:

     -a      Use suffix_length letters to form the suffix of the file name.

     -b      Create smaller files byte_count bytes in length.  If 'k' is appended to the number, the file is split into byte_count kilobyte
	     pieces.  If 'm' is appended to the number, the file is split into byte_count megabyte pieces.

     -l      Create smaller files line_count lines in length.

     -n      Split file into chunk_count smaller files.

     If additional arguments are specified, the first is used as the name of the input file which is to be split.  If a second additional argument
     is specified, it is used as a prefix for the names of the files into which the file is split.  In this case, each file into which the file is
     split is named by the prefix followed by a lexically ordered suffix using suffix_length characters in the range ``a-z''.  If -a is not speci-
     fied, two letters are used as the suffix.

     If the name argument is not specified, 'x' is used.

STANDARDS

     The split utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     A split command appeared in Version 6 AT&T UNIX.

     The -a option was introduced in NetBSD 2.0.  Before that, if name was not specified, split would vary the first letter of the filename to
     increase the number of possible output files.  The -a option makes this unnecessary.

BSD
								   May 28, 2007 							       BSD