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Full Discussion: Double Spacing complex sed pipeline
Top Forums Shell Programming and Scripting Double Spacing complex sed pipeline Post 302265219 by Christoph Spohr on Saturday 6th of December 2008 02:18:43 AM
Old 12-06-2008
Hi,

it is hard to understand your many sed commands. Perhaps you can
give us an example of what you have and what you want to achieve.

If would combine your first sed-command to delete all blank lines
and double-space the rest at the same time.

Code:
sed '/./!d;/./{G}' test

Note: You don't need cat. Sed can take a file as argument.
Secondly you don't need to call sed multiple times which slows
down execution speed. You can execute many commands in one sed call,
simply separate them by ";" as in the example above. Or you write
a sed script and call it with the "-f" option.

HTH Chris
 

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LEARN ABOUT MOJAVE

apple_dump

APPLE_DUMP(1)							   Netatalk 2.2 						     APPLE_DUMP(1)

NAME

       apple_dump - Dump AppleSingle/AppleDouble format file

SYNOPSIS

       apple_dump [-a] FILE | DIR
							  apple_dump -f FILE
							  apple_dump -d FILE
							  apple_dump -h | -help | --help
							  apple_dump -v | -version | --version

DESCRIPTION

       apple_dump dump AppleSingle/AppleDouble format file.

OPTIONS

       -a FILE|DIR
	   This is default. Dump a AppleSingle/AppleDouble file for FILE or DIR automatically. Extrapolate FinderInfo type from absolute path. If
	   FILE is not AppleSingle/AppleDouble format, look for .AppleDouble/FILE and ._FILE. If DIR, look for DIR/.AppleDouble/.Parent and ._DIR.

       -f FILE
	   Dump FILE. Assume FinderInfo to be FileInfo.

       -d FILE
	   Dump FILE. Assume FinderInfo to be DirInfo.

       -h, -help, --help
	   Display the help and exit

       -v, -version, --version
	   Show version and exit

NOTE

       There is no way to detect whether FinderInfo is FileInfo or DirInfo. By default, apple_dump examins whether file or directory, a parent
       directory is .AppleDouble, filename is ._*, filename is .Parent, and so on.

       If setting option -f or -d, assume FinderInfo and doesn't look for another file.

SEE ALSO

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Netatalk 2.2							    02 Sep 2011 						     APPLE_DUMP(1)
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