06-09-2016
Your calculations seem to assume that there will always be exactly two lines with a given 3rd field value. Are these pairs of lines always adjacent (as in your sample input and output)? Can there be just one or more than two lines with a given 3rd field value (and, if so, should the division be by 2 or by the number of lines with that 3rd field value)?
Quote:
No there will be not exactly two lines with given 3rd field value. It can 1,2 or 3 . Depending on input data.These pairs of lines will always adjacent(because 3rd key column is sorted).
Why are you printing ten fields to your output file when there are only nine input fields? This is adding a trailing space to each line of your output file that is not present in the sample output that you say you want???
Quote:
This 10th value printed by mistake. You can skip that.
Does the width of any of your input columns vary, or are the column widths for each column constant for files this script will process?
Quote:
the width of columns may change. This is the major issue I am facing here.
If you could give the solution for this to be printed dynamically with updated value of column 8 will be very helpful.
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LEARN ABOUT REDHAT
history
HISTORY(5) File Formats Manual HISTORY(5)
NAME
history - record of current and recently expired Usenet articles
DESCRIPTION
The file <pathdb in inn.conf>/history keeps a record of all articles currently stored in the news system, as well as those that have been
received but since expired. In a typical production environment, this file will be many megabytes.
The file consists of text lines. Each line corresponds to one article. The file is normally kept sorted in the order in which articles
are received, although this is not a requirement. Innd(8) appends a new line each time it files an article, and expire(8) builds a new
version of the file by removing old articles and purging old entries.
Each line consists of two or three fields separated by a tab, shown below as :
[Hash] date
[Hash] date token
The Hash field is the ASCII representation of the hash of the Message-ID header. This is directly used for the key of the dbz(3).
The date field consists of three sub-fields separated by a tilde. All sub-fields are the text representation of the number of seconds
since the epoch -- i.e., a time_t; see gettimeofday(2). The first sub-field is the article's arrival date. If copies of the article are
still present then the second sub-field is either the value of the article's Expires header, or a hyphen if no expiration date was speci-
fied. If an article has been expired then the second sub-field will be a hyphen. The third sub-field is the value of the article's Date
header, recording when the article was posted.
The token field is a token of the article. This field is empty if the article has been expired.
For example, an article whose Message-ID was <7q2saq$sal$1@isrv4.pa.vix.com>, posted on 26 Aug 1999 08:02:34 GMT and recieved at 26 Aug
1999 08:06:54 GMT, could have a history line (broken into three lines for display) like the following:
[E6184A5BC2898A35A3140B149DE91D5C]
935678987~-~935678821
@030154574F00000000000007CE3B000004BA@
In addition to the text file, there is a dbz(3) database associated with the file that uses the Message-ID field as a key to determine the
offset in the text file where the associated line begins. For historical reasons, the key includes the trailing byte (which is not
stored in the text file).
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.12.2.1, dated 2000/08/17.
SEE ALSO
dbz(3), expire(8), inn.conf(5), innd(8), makehistory(8).
HISTORY(5)