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Full Discussion: awk spitting columns
Top Forums UNIX for Beginners Questions & Answers awk spitting columns Post 302995696 by Don Cragun on Monday 10th of April 2017 08:59:40 PM
Old 04-10-2017
There is no need for cat in this pipeline and there is no need for two of your three invocations of awk.

There is no occurrence of the string +2 in your sample input and there is nothing wrong with your calculation as long as the leading character in hour field in your input file is a plus sign. But, your calculation would be wrong if the leading character in that field was a minus sign (which does not appear in your sample input). If we assume that the 1st character in the hour field will ALWAYS either be a plus sign (+) or a minus sign (-), the following seems to do what I would guess you were trying to do:
Code:
awk '{	printf("%s %-15s %-10s %-10s %-6s\n",
	    NR, $1, $2 * 15 + $3 / 4 + $4 / 240,
	    (substr($5, 1, 1) == "-" ? -1 : 1) * \
		(substr($5, 2) + $6 / 60 + $7 / 3600),
	    $8)
}' maser_neg_test.txt > maser_neg_test2.txt

If we add a couple of timestamps with negative hours to your sample maser_neg_test.txt for testing:
Code:
RXSJ00001+0523   00 00 11.78  +05 23 17.4  11992  2016-02-12   51.3   3  10.9  10631  13365
    KUG2358+330   00 00 58.10  +33 20 38.0  12921  2012-11-17   36.5   8   4.0  11461  14395
0001233+4733537   00 01 23.30  +47 33 53.7   5237  2010-11-02   39.5  10   3.6   3848   6639   3.5   6358   9196
       NGC-7805   00 01 26.76  +31 26 01.4   4850  2006-01-05   43.8   5   6.0   3464   6248   5.6   5968   8799
extra	2 3 4 -05 59 60 8 9 10 11 12 13 14 15 16 17
extra2	2 3 4 -10 30 00 8 9 10 11 12 13 14 15 16 17

the above code produces the following output in maser_neg_test2.txt:
Code:
1 RXSJ00001+0523  0.0490833  5.38817    11992 
2 KUG2358+330     0.242083   33.3439    12921 
3 0001233+4733537 0.347083   47.5649    5237  
4 NGC-7805        0.3615     31.4337    4850  
5 extra           30.7667    -6         8     
6 extra2          30.7667    -10.5      8

which I assume is appropriate output for that input.
 

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LEARN ABOUT NETBSD

column

COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME

     column -- columnate lists

SYNOPSIS

     column [-tx] [-c columns] [-s sep] [file ...]

DESCRIPTION

     The column utility formats its input into multiple columns.  Rows are filled before columns.  Input is taken from file operands, or, by
     default, from the standard input.	Empty lines are ignored.

     The options are as follows:

     -c      Output is formatted for a display columns wide.

     -s      Specify a set of characters to be used to delimit columns for the -t option.

     -t      Determine the number of columns the input contains and create a table.  Columns are delimited with whitespace, by default, or with
	     the characters supplied using the -s option.  Useful for pretty-printing displays.

     -x      Fill columns before filling rows.

     column exits 0 on success, >0 if an error occurred.

ENVIRONMENT

     COLUMNS  The environment variable COLUMNS is used to determine the size of the screen if no other information is available.

EXAMPLES

	   (echo "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME"; 
	   ls -l | sed 1d) | column -t

SEE ALSO

     colrm(1), ls(1), paste(1), sort(1)

HISTORY

     The column command appeared in 4.3BSD-Reno.

BSD
								   March 9, 2008							       BSD
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