how to add 2 float values to each other?
i tried this and it doesnt work:
#!bin/bash
numone=1.234
numtwo=0.124
total=`expr $numone + $numtwo`
echo $total
thanks (5 Replies)
Hello, I have a file, and one column has both positive and negative numbers. Does anyone know how I can calculate the total of all the values (i.e, +ve and -ve).
eg:
col1 col2 col3
data 23 data
data 76 data
data -30 data
Thanks
Khoom (1 Reply)
i know how to add two numbers using expr,
but if i have a file with hundreds of numbers, how do i add them all together, without typing them all one by one?
for example, file.txt contains
4
5
6
7
how can i give a command to add them, without typing
$ expr `4 + 5 + 6 + 7` (7 Replies)
Hi
I figured how to add my list of numbers. However how do I count so that after a certain number it lists the line.
Example:
12 test1
46 test2
195 test3
174 test4
634 test5
185 test6
94 test7
So basically add the numbers and when the addition reaches 300 or less
print the... (8 Replies)
is there another way of doing the below:
echo "7 3 8 2 2 1 3 83.4 8.2 4 8 73 90.5" | bc
shell is bash. os is linux and sunos.
bc seems to have an issue with long range of numbers (12 Replies)
I have a file which has following contents which I want to add up.
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
28170.24
139038.72
139038.72
139038.72
139038.72 (5 Replies)
Hello. Trying to add a column of numbers and combine the 1st and 2nd fields as uniq with the new total.
This works to add the numbers but can't figure an easy was to combine the 1st and 2nd column as the list is very long. awk '{s+=$3} END {print s}'
bird dog 300
bird dog 100
cat clown 200... (1 Reply)
Hi again. Sorry for all the questions — I've tried to do all this myself but I'm just not good enough yet, and the help I've received so far from bartus11 has been absolutely invaluable. Hopefully this will be the last bit of file manipulation I need to do.
I have a file which is formatted as... (4 Replies)
Hello Forum,
I am receiving a file daily like ASAD but at the end there is a counter like 0012 (4 digits) so my every next file +1
I want to write a control script and check the last sequence number.Let's say If I receive a file ASAD0012 then after receiving this file I wan to say that... (5 Replies)
Discussion started by: cemokam65
5 Replies
LEARN ABOUT CENTOS
rake
RAKE(1) Ruby Programmers Reference Guide RAKE(1)NAME
rake -- Ruby Make
SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE]
[-r MODULE] [--rules] [variable=value] target ...
DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command.
Rake has the following features:
o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax
to worry about (is that a tab or a space?).
o Users can specify tasks with prerequisites.
o Rake supports rule patterns to synthesize implicit tasks.
o Flexible FileLists that act like arrays but know about manipulating file names and paths.
o A library of prepackaged tasks to make building rakefiles easier.
OPTIONS --version Display the program version.
-C
--classic-namespace
Put Task and FileTask in the top level namespace
-D [PATTERN]
--describe [PATTERN]
Describe the tasks (matching optional PATTERN), then exit.
-E CODE
--execute-continue CODE
Execute some Ruby code, then continue with normal task processing.
-G
--no-system
--nosystem Use standard project Rakefile search paths, ignore system wide rakefiles.
-I LIBDIR
--libdir LIBDIR Include LIBDIR in the search path for required modules.
-N
--no-search
--nosearch Do not search parent directories for the Rakefile.
-P
--prereqs Display the tasks and dependencies, then exit.
-R RAKELIBDIR
--rakelib RAKELIBDIR
--rakelibdir RAKELIBDIR
Auto-import any .rake files in RAKELIBDIR. (default is rakelib )
-T [PATTERN]
--tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit.
-e CODE
--execute CODE Execute some Ruby code and exit.
-f FILE
--rakefile FILE Use FILE as the rakefile.
-h
--help Prints a summary of options.
-g
--system Using system wide (global) rakefiles (usually ~/.rake/*.rake ).
-n
--dry-run Do a dry run without executing actions.
-p CODE
--execute-print CODE
Execute some Ruby code, print the result, then exit.
-q
--quiet Do not log messages to standard output.
-r MODULE
--require MODULE Require MODULE before executing rakefile.
-s
--silent Like --quiet, but also suppresses the 'in directory' announcement.
-t
--trace Turn on invoke/execute tracing, enable full backtrace.
-v
--verbose Log message to standard output (default).
--rules Trace the rules resolution.
SEE ALSO ruby(1)make(1)
http://rake.rubyforge.org/
REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>.
You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an
email to the author.
AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org>
UNIX November 7, 2012 UNIX