Sponsored Content
Top Forums Shell Programming and Scripting Is it possible to Divide a negative number in bash script Post 302776103 by Yoda on Wednesday 6th of March 2013 02:01:57 AM
Old 03-06-2013
First of all stay away from dangerous back-ticks - for i in `cat ./eff_cal.txt` and use a while loop instead:

Assuming you have numbers in file: eff_cal.txt Try:
Code:
while read num
do
        output=$( echo "scale=4; $num * 100 / 128" | bc -l )
        echo "$num ----- $output"
done < eff_cal.txt > some.txt

This User Gave Thanks to Yoda For This Post:
 

10 More Discussions You Might Find Interesting

1. Programming

C++ how to isdigit() a negative number?

hi people, I have a function which I am passing a stream which is basically postfix notation if(isdigit(in.peek())) { in >> number; nums.push(number); } else if (strchr("+-*/", in.peek( )) != NULL) { in >> symbol; do_operation(symbol, nums, okay); } ... (1 Reply)
Discussion started by: Darklight
1 Replies

2. Shell Programming and Scripting

Grep for a negative number

Hi, I want to search for a return code of -3. Using grep "-3" *.* is giving a syntax error. Please suggest as to how can we search for this pattern using grep. Thanks, Krishna (2 Replies)
Discussion started by: kzmatam
2 Replies

3. Shell Programming and Scripting

ignore negative number in script

Hi, does anyone know how to ignore whether a number is negative in a script. E.g. if I have a variable that contains -1200, how do I ignore the minus sign? (1 Reply)
Discussion started by: borderblaster
1 Replies

4. HP-UX

Division returning a negative number

Hi All, Just faced an interesting thing in HP-UX. I was dividing 2955334616 / 2 by using echo `expr 2955334616 / 2` , and this ofcourse which expects 1477667308 to be returned. But I am getting -669816340 and I am :wall: how exactly this is possible. It is not one of the compliments (Ones or... (4 Replies)
Discussion started by: mail2sanand
4 Replies

5. Shell Programming and Scripting

Add and divide each numbers with the added number

Hi All, I am stuck with this problem. I have some 100000 (.dat) 1.dat, 2.dat,3.dat etc until 100000.dat files which look like this: 1.dat 1 2 3 4 0.99 4.54 All my files 1.dat until 100000.dat look the same but with different numbers. I have to first add all the numbers in each... (1 Reply)
Discussion started by: shoaibjameel123
1 Replies

6. Shell Programming and Scripting

Grep for the most negative number

Hello, I am trying to write a bash script which will give me the most negative number. Here is an example input: Ce 3.7729752124 -4.9505731588 -4.1061257680 Ce -6.9156611391 -0.5991784762 7.3051893138 Ce 7.6489739875 0.3513020731 ... (6 Replies)
Discussion started by: sdl27789
6 Replies

7. Shell Programming and Scripting

AWK print number of records, divide this number

I would like to print the number of records of 2 files, and divide the two numbers awk '{print NR}' file1 > output1 awk '{print NR}' file2 > output2 paste output1 output2 > output awl '{print $1/$2}' output > output_2 is there a faster way? (8 Replies)
Discussion started by: programmerc
8 Replies

8. Shell Programming and Scripting

Negative number comparison using nawk on Linux

Hi All, I am trying to compare two negative numbers using awk on linux.But it is giving me wrong result.Same code is working perfectly on solaris. print ((0+new_price) < MIN_PRICE) e.g If I try to compare -1.32(new_price) and -500(min_price) using "<" operator, output is 1 i.e true. ... (5 Replies)
Discussion started by: Rashmee
5 Replies

9. Shell Programming and Scripting

Regex negative look and bash script

My script have to read logfile, and take some action, if in pattern are strings: 1) exit 0 strings pattern ... "INF - Status"... success 2) exit 1 (! as not) strings pattern ... "INF - Status"... !success Simple example, what works #!/bin/bash tail -f regex.log | while read LOGLINE ... (7 Replies)
Discussion started by: kvaikla
7 Replies

10. UNIX for Beginners Questions & Answers

Converting negative number to positive in a file

Hi ALL, I am having semi column separated file as below. I am having negative values for the records starting with 11095. How can I convert that positive number I tried this below seems not working sed 's/ \(*\)$/ -\1/;t;s/\(.*\)-/\1/ myfile myfile... (6 Replies)
Discussion started by: arunkumar_mca
6 Replies
RAWURLENCODE(3) 							 1							   RAWURLENCODE(3)

rawurlencode - URL-encode according to RFC 3986

SYNOPSIS
string rawurlencode (string $str) DESCRIPTION
Encodes the given string according to RFC 3986. PARAMETERS
o $str - The URL to be encoded. RETURN VALUES
Returns a string in which all non-alphanumeric characters except -_.~ have been replaced with a percent ( %) sign followed by two hex dig- its. This is the encoding described in RFC 3986 for protecting literal characters from being interpreted as special URL delimiters, and for protecting URLs from being mangled by transmission media with character conversions (like some email systems). Note Prior to PHP 5.3.0, rawurlencode encoded tildes ( ~) as per RFC 1738. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.4 | | | | | | | Tilde characters are no longer encoded when | | | rawurlencode(3) is used with EBCDIC strings. | | | | | 5.3.0 | | | | | | | Now conforms to RFC 3986. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 including a password in an FTP URL <?php echo '<a href="ftp://user:', rawurlencode('foo @+%/'), '@ftp.example.com/x.txt">'; ?> The above example will output: <a href="ftp://user:foo%20%40%2B%25%2F@ftp.example.com/x.txt"> Or, if you pass information in a PATH_INFO component of the URL: Example #2 rawurlencode(3) example 2 <?php echo '<a href="http://example.com/department_list_script/', rawurlencode('sales and marketing/Miami'), '">'; ?> The above example will output: <a href="http://example.com/department_list_script/sales%20and%20marketing%2FMiami"> SEE ALSO
rawurldecode(3), urldecode(3), urlencode(3), RFC 3986. PHP Documentation Group RAWURLENCODE(3)
All times are GMT -4. The time now is 03:35 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy