arithmetic in ksh Post: 302104998

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Arithmetic In UNIX

I am a beginner and I have been searching the web all morning for this answer but can't find it anywhere. I know that prtint 1*2 will return 1*2 what if i actually want the problem to be calculated so i want print 1*2 to return 2 How is this done?

2. Shell Programming and Scripting

Help with arithmetic operation

I am using egrep to extract numbers from a file and storing them as variables in a script. But I am not able to do any arithmetic operations on the variables using "expr" because it stores them as char and not integers. Here is my code and the error I get. Any help will be appreciated. #!/bin/sh...

3. Shell Programming and Scripting

strange ksh arithmetic

Hello, I would like to understand this... I'm using ksh and doing (( z = y - 1 )) if y=34, then the result for z is 33, but if y=034 the result is z=27. Why?? Thanks

4. Shell Programming and Scripting

ksh-script "arithmetic syntax error" comparing strings

Hi all, I�ve already searched the forum but can�t find what i am doing wrong. I am trying to compare two variables using ksh under red hat. The error I get is: -ksh: .: MDA=`md5sum /tmp/ftp_dir_after_transfer | cut -d' ' -f1 ` MDB=`md5sum /tmp/ftp_dir_before_transfer | cut -d' ' -f1 `...

5. UNIX for Dummies Questions & Answers

Arithmetic: how to??

Hello all, I'd like to know how to perform arithmetic on multiple files. I have got many tab-delimited files. Each file contains about 2000 rows and 2000 columns. What I want to do is to to sum the values in each row & column in every file. The following explains what I want to do; ...

6. Shell Programming and Scripting

Arithmetic operations in bash,ksh,sh

Guys, The below expression is valid in which shells (sh,ksh,bash,csh)? VAR1=2 VAR2=$(($VAR1 -2)) Thanks

7. Programming

Pointer Arithmetic In C

I have a fundamental question on C pointer arithmetry.. Suppose i have a c string pointer already pointing to a valid location, Can I just do a charptr = charptr +1; to get to the next location, irregardless if my program is 32 or 64 bits? or should i do it this way: charptr =...

8. Shell Programming and Scripting

ksh Arithmetic syntax error while comparing decimal numbers

Hello, I am having a problem when i execute following script on RHEL 6.4. Same script works fine on another machine where I have same version of RHEL and KSH. Below is the rpm and RHEL version. ossvm12(0)> rpm -qa | grep ksh ksh-20100621-19.el6.x86_64 ossvm12(0)> cat...

9. Shell Programming and Scripting

Need help with date arithmetic please

Hello fellow forum members, I wrote below piece of code to calculate the date after a given date - date=$DATE_FINAL declare -a max_month=(0 31 28 31 30 31 30 31 31 30 31 30 31) eval $(echo $date|sed 's!$....$$..$$..$!year=\1;month=\2;day=\3!') (( year4=year%4 )) (( year100=year%100...

10. Shell Programming and Scripting

Arithmetic with bash

I need to divide the number of white spaces by total number of characters in a file using bash. I am able to get the number of white spaces correctly using: tr -cd �� < afile | wc -c I am also able to get the total number of characters using: wc -c afile How do I divide the first...

LEARN ABOUT SUNOS

noecho

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							    echo(3XCURSES)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Arithmetic In UNIX

Discussion started by: tygun

2. Shell Programming and Scripting

Help with arithmetic operation

Discussion started by: emjayshaikh

3. Shell Programming and Scripting

strange ksh arithmetic

Discussion started by: fbg

4. Shell Programming and Scripting

ksh-script "arithmetic syntax error" comparing strings

Discussion started by: old_mike