Hi LMHmedchem,
Well done. I see no reason why the code you have will not meet your requirements.
You might want to consider this alternative that should be slightly faster (since it doesn't split or sort the input, and only looks at each field once):
Note that even if you don't want default filenames to be supplied if you invoke your script with less than two operands, you should still quote the filenames in the last line of your script in case someone invokes your script with a quoted operand containing an IFS character.
These 2 Users Gave Thanks to Don Cragun For This Post:
Hi, guys,
today, I have copied a simple script which runs correctly on a computer to another one. But, the latter informs me:
Floating point exception!
@ ./command_module a b c
where command_module is the module compiled by myself.
So, I have fixed it by following steps:
1.... (5 Replies)
Hi,
I' using bash and I would like to use "bc" to compute the ratio of of two numbers and assign the ratio to a variable.
The numbers are in a file, e.g.
196.304492
615.348986
Any idea how to do it?
N.B. I cannot change the file to have 196.304492 / 615.348986 as the file is produced by... (14 Replies)
Dear all,
I have the following question. Let's say that I have the following script
#!/bin/bash
value=0.4987865
a=` printf "%6.2f" $value `
b=`echo $value + $value | bc -l`
echo $a
echo $b
exit
And the exit is:
0,00
.9975730
Thus, the problem is that the printf order does not... (2 Replies)
Hello folks
I Hope everyone is fine. I am calculating number of bytes calculation from apache web log.
awk '{ sum += $10 } END { print sum }' /var/httpd/log/mydomain.log
7.45557e+09
it show above number, what should i do it sow number like 7455, i mean if after decimal point above 5 it... (5 Replies)
Hey,
I guess I am just to stupid and am not seeing the "wood for the trees", but I am always getting strange errors.
I want to create a mesh with coordinates like:
x y z
3.1 3.0 0.75 0 0 1
3.1 2.9 0.75 0 0 1
3.1 2.8 0.75 0 0 1
3.1 2.7 0.75 0 0 1
3.0 ... (10 Replies)
Hello Everyone,
I am currently working on a script to calculate optimal tcp window size
the formula that I am following is
2 x (bandwith speed /8 * Round Trip Time ) = x
This is what I have so far
#!/bin/bash
echo "Enter connection speed" << Get the speed of the Connection from... (3 Replies)
Heyas
I have a script (vhs - video handler script, using ffmpeg) to encode videos.
It also encodes a dvd, but until now just non-copy-protected ones, so i've tried to add/implement a vobcopy wrapper to be used by my script.
At first it looked quite fine, but when changing from the first VOB... (9 Replies)
Hello Guys,
I have a floating point number 1.14475E+15 I want to convert this number in to full number (Integer or Big integer). I tried couple of functions it did not work. When I use INT=${FLOAT/.*} I am getting value as 1. I don't want a truncated value
#!/bin/bash
#... (9 Replies)
I have the following code snippet in bash
if ]; then
minm=`echo "$diff" | bc`
fi
It works well for most of the cases. However lets say diff is -0.17 and minm is -0.0017. In such a case the comparison seems to fail. Is the correct way to compare a mixture of positive and... (12 Replies)
Discussion started by: ngabrani
12 Replies
LEARN ABOUT OPENDARWIN
funindex
funindex(1) SAORD Documentation funindex(1)NAME
funindex - create an index for a column of a FITS binary table
SYNOPSIS
funindex <switches> <iname> [oname]
OPTIONS
NB: these options are not compatible with Funtools processing. Please
use the defaults instead.
-c # compress output using gzip"
-a # ASCII output, ignore -c (default: FITS table)"
-f # FITS table output (default: FITS table)"
-l # long output, i.e. with key value(s) (default: long)"
-s # short output, i.e. no key value(s) (default: long)"
DESCRIPTION
The funindex script creates an index for the specified column (key) by running funtable -s (sort) and then saving the column value and the
record number for each sorted row. This index will be used automatically
by funtools filtering of that column, provided the index file's modification date is later than that of the data file.
The first required argument is the name of the FITS binary table to index. Please note that text files cannot be indexed at this time. The
second required argument is the column (key) name to index. While multiple keys can be specified in principle, the funtools index process-
ing assume a single key and will not recognize files containing multiple keys.
By default, the output index file name is [root]_[key].idx, where [root] is the root of the input file. Funtools looks for this specific
file name when deciding whether to use an index for faster filtering. Therefore, the optional third argument (output file name) should not
be used for funtools processing.
For example, to create an index on column Y for a given FITS file, use:
funindex foo.fits Y
This will generate an index named foo_y.idx, which will be used by funtools for filters involving the Y column.
SEE ALSO
See funtools(7) for a list of Funtools help pages
version 1.4.2 January 2, 2008 funindex(1)