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Top Forums Shell Programming and Scripting Insert new pattern in newline after the nth occurrence of a line pattern - Bash in Ubuntu 12.04 Post 302700215 by Phil3759 on Thursday 13th of September 2012 06:21:25 AM
Old 09-13-2012
Quote:
Originally Posted by elixir_sinari
data.db will not be edited by that command (as opposed to that done by the -i switch of sed). You'll need to redirect the output of that command in a temporary file and then, rename that temporary file to data.db. Was the first occurrence of that pattern replaced by the replacement string in the terminal output?

It would help to post a representative sample of data.db. Also, mention the output produced by that command on this sample and the expected output.
Ah, I see
No way to see in terminal as data.db contents are too long
I redirected to a text file with this command:
Code:
pattern="system /path1/file1 file1"
new_pattern=" data /path2/file2 file2"
n=3
awk '$0==patt{which++;if(which==n)$0=$0 RS repl}1' patt="$pattern" repl="$new_pattern" n=$n data.db >test.txt

The output test.txt file has exactly same contents as original data.db, binary matching. So, the patetrn was not replaced Smilie

---------- Post updated at 12:21 PM ---------- Previous update was at 12:20 PM ----------

Ok, I will post details of files in code
 

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SC_WARTS2TEXT(1)					    BSD General Commands Manual 					  SC_WARTS2TEXT(1)

NAME
sc_warts2text -- simple dump of information contained in a warts file. SYNOPSIS
sc_warts2text [-d ip2descr-file] [file ...] DESCRIPTION
The sc_warts2text utility provides a simple dump of information contained in a sequence of warts files. The output is the same as that which would have been provided by scamper if the text output option had been chosen instead of the warts output option when the data was collected. The options are as follows: -d ip2descr-file specifies the name of a file with IP-address, description mappings, one mapping per line. See the examples section for further information. While the output of sc_warts2text is structured and suitable for initial analyses of results, the format of the output is not suitable for automated parsing and analysis as the output of sc_warts2text will change overtime with no regard to backwards compatibility. Analyses of the contents of a warts file should be made using specialised programs which link against the scamper file API. EXAMPLES
The command: sc_warts2text file1.warts file2.warts will decode and print the contents of file1.warts, followed by the contents of file2.warts. The command: gzcat file1.warts.gz | sc_warts2text will print the contents of the uncompressed file supplied on stdin. Given a set of IP-address, description pairs in a file name mappings.txt: 192.0.2.1 "foo" 192.0.2.2 "bar" then the command gzcat file1.warts.gz | sc_warts2text -d mappings.txt will print the description associated with a given destination address before each result is presented. SEE ALSO
scamper(1), sc_wartsdump(1) AUTHORS
sc_warts2text is written by Matthew Luckie <mjl@luckie.org.nz>. BSD
October 15, 2010 BSD
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