10-14-2008
Removing end of line to merge multiple lines
I'm sure this will be an easy question for you experts out there, but I have been searching the forum and working on this for a couple hours now and can't get it right.
I have a very messy data file that I am trying to tidy up - one of the issues is some records are split into multiple lines:
999999000 "Name" "this is text for line one
line two
line three"
And I've been trying all sorts of version of sed to get it to look like this:
999999000 "Name" "this is text for line one line two line three"
and yes, I have tried things like sed 's/$/ /' file1 > file2... the problem is not every line has an issue, so I'm trying to figure out how to only remove line feeds for problematic lines, not all lines
the problem lines will begin with alpha characters not numeric, so I've been trying to do something with that but to no avail
thanks
Last edited by tink; 10-14-2008 at 12:17 PM..
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LEARN ABOUT LINUX
debconf-set-selections
DEBCONF-SET-SELECTIONS(1) Debconf DEBCONF-SET-SELECTIONS(1)
NAME
debconf-set-selections - insert new default values into the debconf database
SYNOPSIS
debconf-set-selections file
debconf-get-selections | ssh newhost debconf-set-selections
DESCRIPTION
debconf-set-selections can be used to pre-seed the debconf database with answers, or to change answers in the database. Each question will
be marked as seen to prevent debconf from asking the question interactively.
Reads from a file if a filename is given, otherwise from stdin.
WARNING
Only use this command to seed debconf values for packages that will be or are installed. Otherwise you can end up with values in the
database for uninstalled packages that will not go away, or with worse problems involving shared values. It is recommended that this only
be used to seed the database if the originating machine has an identical install.
DATA FORMAT
The data is a series of lines. Lines beginning with a # character are comments. Blank lines are ignored. All other lines set the value of
one question, and should contain four values, each separated by one character of whitespace. The first value is the name of the package
that owns the question. The second is the name of the question, the third value is the type of this question, and the fourth value (through
the end of the line) is the value to use for the answer of the question.
Alternatively, the third value can be "seen"; then the preseed line only controls whether the question is marked as seen in debconf's
database. Note that preseeding a question's value defaults to marking that question as seen, so to override the default value without
marking a question seen, you need two lines.
Lines can be continued to the next line by ending them with a "" character.
EXAMPLES
# Force debconf priority to critical.
debconf debconf/priority select critical
# Override default frontend to readline, but allow user to select.
debconf debconf/frontend select readline
debconf debconf/frontend seen false
OPTIONS
--verbose, -v
verbose output
--checkonly, -c
only check the input file format, do not save changes to database
SEE ALSO
debconf-get-selections(1) (available in the debconf-utils package)
AUTHOR
Petter Reinholdtsen <pere@hungry.com>
2011-06-22 DEBCONF-SET-SELECTIONS(1)