Sponsored Content
Operating Systems Solaris Korn shell - evaluating string gives wrong results due to limitations Post 302832979 by jlliagre on Tuesday 16th of July 2013 04:58:38 AM
Old 07-16-2013
"6" as output is dubious:

Legacy ksh (ksh88, integer arithmetics):
Code:
$ echo $((5.2+2.5))
7

Current ksh (ksh93, floating point arithmetics):
Code:
$ echo $((5.2+2.5))
7.7

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Script giving wrong results....

hi, I have this script which gives me the result... #! /usr/bin/sh set -x cd /home/managar a=1 while true do if then echo " File log.txt exists in this directory " exit 0 fi echo " File has not arrived yes..." sleep 3 let a=a+1 if then (1 Reply)
Discussion started by: mgirinath
1 Replies

2. Shell Programming and Scripting

How to: Parse text string into variables using Korn shell

I am writing a script to keep check on free disk space, and I would like to find a way to parse $LINE (see code below) into a numeric value (for free disk space percentage) and a string value (for mount point). If possible, I would like to avoid sed or any additional use of awk since I am not very... (7 Replies)
Discussion started by: shew01
7 Replies

3. Shell Programming and Scripting

Evaluating command output (shell script )

Hello, in a script i would like to evaluate a command output with a grep, for example, to know if the parameter defined by the user is in the output. Something like: the_command | grep $1 Please, how is the way to evalulate in this a script, like if echo "incorrect parameter, not in... (2 Replies)
Discussion started by: aristegui
2 Replies

4. Shell Programming and Scripting

K Shell evaluating value to a variable

Hi, I have the following requirement. V="First" R="V" echo $$R The output should be First. How do i achieve this. how do we evaluate the $R and evaluate it to $V as $R contains V and $V is First. Thanks Vijay (2 Replies)
Discussion started by: vijaykrc
2 Replies

5. Solaris

Can't install Unicode::String due to String.so not found

CPAN.pm: Going to build G/GA/GAAS/Unicode-String-2.09.tar.gz Checking if your kit is complete... Looks good Writing Makefile for Unicode::String cp String.pm blib/lib/Unicode/String.pm cp lib/Unicode/CharName.pm blib/lib/Unicode/CharName.pm /usr/bin/perl /usr/perl5/5.8.4/lib/ExtUtils/xsubpp... (5 Replies)
Discussion started by: PatrickBaer
5 Replies

6. Shell Programming and Scripting

String parsing in Korn Shell

Hi everybody, I have a string stored in a variable called record: record="SNMPv2-SMI::ent.9.9.43.1.3.9.2 = Timeticks: (177330898) 20 days, 12:35:08.98" I want to write some regular expressions good for Korn Shell to extract the number between parenthesis, in this case 177330898, and put it in... (3 Replies)
Discussion started by: omoyne
3 Replies

7. Shell Programming and Scripting

korn shell: check the content of a string of a variable

hello, i have a variable which should have following content : var="value1" or var="value2" or var="value2:*" # example: value2:22 how can i check : - if the content is ok (value1 / value2* ) - the two options of "value2" when content is example "value2:22" , i want to split... (3 Replies)
Discussion started by: bora99
3 Replies

8. Shell Programming and Scripting

awk evaluating a string as a math expression

Hi, I am writing a script in awk trying to replace strings that are math expressions with their result. For example, I have a file that looks like this: 5-1 32/8-1 4*12 17+1-3 I would like to get the following output: 4 3 48 15 I tried doing it the following way (using the "bc"... (8 Replies)
Discussion started by: avi.levi
8 Replies

9. Shell Programming and Scripting

Korn Shell manipulating the string into dynamic currency number

Conversion of string into currency value.. ex1: number_of_positions=2 input_string=345987 Output= 345,987.00 ex2: number_of_positions=4 input_string=1345987 Output= 1,345,987.0000 Please respond as soon as possible edit by bakunin: we will gladly respond as soon as... (15 Replies)
Discussion started by: suren.bills
15 Replies

10. IP Networking

Packet going out of wrong interface due to OS automatically added cache route with lower metric

RHEL 7.0, IPV6 Scenario: I have routed specific network using network scripts. 1. "ip -6 route show" shows that route has been added. ( with metric 1024) 2. Ping of the specific IP through that route is successful. 3. Now after few days, for some reason, we see that cache route appears for... (3 Replies)
Discussion started by: msr1981
3 Replies
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 05:53 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy