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Top Forums UNIX for Advanced & Expert Users Conversion of rows to columns using awk based om column value Post 302972075 by Don Cragun on Friday 29th of April 2016 03:42:51 PM
Old 04-29-2016
Are these added comments enough to explain what my script does, or do you still not understand how something works?
Code:
awk '
/^dn:/ {# For input lines starting with "dn:":
	# if this is not the 1st input line, add a newline to previous output;
	# then, in either case, add the current input line (without the
	# terminating newline character) as the start of a new output line.
	printf("%s%s", (NR > 1) ? "\n" : "", $0)
	# Skip to next input line.
	next
}
{	# For other input lines:
	# If the line contains a colon, add "|" as a field separator and add the
	# current input line (withut the terminating newline character) to the
	# current output line; otherwise, just add the current input line
	# (without the terminating newline character) to the current output
	# line.
	printf("%s%s", (sub(/:/, "&")) ? "|" : "", $0)
}
END {	# When we hit EOF on the input file, add a trailing newline to the last
	# output line.
	print ""
}' file

 

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GIT-STRIPSPACE(1)						    Git Manual							 GIT-STRIPSPACE(1)

NAME
git-stripspace - Remove unnecessary whitespace SYNOPSIS
git stripspace [-s | --strip-comments] git stripspace [-c | --comment-lines] DESCRIPTION
Read text, such as commit messages, notes, tags and branch descriptions, from the standard input and clean it in the manner used by Git. With no arguments, this will: o remove trailing whitespace from all lines o collapse multiple consecutive empty lines into one empty line o remove empty lines from the beginning and end of the input o add a missing to the last line if necessary. In the case where the input consists entirely of whitespace characters, no output will be produced. NOTE: This is intended for cleaning metadata, prefer the --whitespace=fix mode of git-apply(1) for correcting whitespace of patches or files in the repository. OPTIONS
-s, --strip-comments Skip and remove all lines starting with comment character (default #). -c, --comment-lines Prepend comment character and blank to each line. Lines will automatically be terminated with a newline. On empty lines, only the comment character will be prepended. EXAMPLES
Given the following noisy input with $ indicating the end of a line: |A brief introduction $ | $ |$ |A new paragraph$ |# with a commented-out line $ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out. $ | $ |The end.$ | $ Use git stripspace with no arguments to obtain: |A brief introduction$ |$ |A new paragraph$ |# with a commented-out line$ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out.$ |$ |The end.$ Use git stripspace --strip-comments to obtain: |A brief introduction$ |$ |A new paragraph$ |explaining lots of stuff.$ |$ |The end.$ GIT
Part of the git(1) suite Git 2.17.1 10/05/2018 GIT-STRIPSPACE(1)
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