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)
Hi this is quite a simple question... I am new to LINUX/UNIX and so I am just trying to create a very basic program. The idea is that when the user runs the program (from the shell) they enter 3 values and the program will add them up:
"./sum 23 5 1
29"
my code for this program is as follows:
... (4 Replies)
Hi All,
I have a file example.csv which looks like this
GrpID,TargetID,Signal,Avg_Num
CSCH74_1_1,2007,61,256
CSCH74_1_1,212007,647,679
CSCH74_1_1,12007,3,32
CSCH74_1_1,207,299,777
I want the output as
GrpID,TragetID,Signal-CSCH74_1_1,Avg_Num
CSCH74_1_1,2007,61,256... (4 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)
I am writing a bash script on ubuntu11.10
I have some string having numbers and letter and want to add all the numbers together
For example
1s2d23f
I want to perform
1 + 2 + 23 and store it in a variable (3 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)
Hi,
I would like to add a new column containing the row numbers to a text file. How do I go about doing that? Thanks!
Example input:
A X
B Y
C D
Output:
A X 1
B Y 2
C D 3 (5 Replies)
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)
Discussion started by: crunchgargoyle
4 Replies
LEARN ABOUT SUSE
pcresample
PCRESAMPLE(3) Library Functions Manual PCRESAMPLE(3)NAME
PCRE - Perl-compatible regular expressions
PCRE SAMPLE PROGRAM
A simple, complete demonstration program, to get you started with using PCRE, is supplied in the file pcredemo.c in the PCRE distribution.
The program compiles the regular expression that is its first argument, and matches it against the subject string in its second argument.
No PCRE options are set, and default character tables are used. If matching succeeds, the program outputs the portion of the subject that
matched, together with the contents of any captured substrings.
If the -g option is given on the command line, the program then goes on to check for further matches of the same regular expression in the
same subject string. The logic is a little bit tricky because of the possibility of matching an empty string. Comments in the code explain
what is going on.
If PCRE is installed in the standard include and library directories for your system, you should be able to compile the demonstration pro-
gram using this command:
gcc -o pcredemo pcredemo.c -lpcre
If PCRE is installed elsewhere, you may need to add additional options to the command line. For example, on a Unix-like system that has
PCRE installed in /usr/local, you can compile the demonstration program using a command like this:
gcc -o pcredemo -I/usr/local/include pcredemo.c
-L/usr/local/lib -lpcre
Once you have compiled the demonstration program, you can run simple tests like this:
./pcredemo 'cat|dog' 'the cat sat on the mat'
./pcredemo -g 'cat|dog' 'the dog sat on the cat'
Note that there is a much more comprehensive test program, called pcretest, which supports many more facilities for testing regular expres-
sions and the PCRE library. The pcredemo program is provided as a simple coding example.
On some operating systems (e.g. Solaris), when PCRE is not installed in the standard library directory, you may get an error like this when
you try to run pcredemo:
ld.so.1: a.out: fatal: libpcre.so.0: open failed: No such file or directory
This is caused by the way shared library support works on those systems. You need to add
-R/usr/local/lib
(for example) to the compile command to get round this problem.
AUTHOR
Philip Hazel
University Computing Service
Cambridge CB2 3QH, England.
REVISION
Last updated: 23 January 2008
Copyright (c) 1997-2008 University of Cambridge.
PCRESAMPLE(3)