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Full Discussion: Calculator
Top Forums Shell Programming and Scripting Calculator Post 302189314 by ironhead3fan on Friday 25th of April 2008 12:06:52 PM
Old 04-25-2008
Calculator

I am pretty new to the Unix word, and have created a working calculator script. I have one problem. It doesn't use any decimals, it rounds off to the nearest whole number.

1 #!/bin/ksh
2 while true; do
3 echo -n "Enter the first integer: "; read IN1
4 test "$OP1" = "x" && exit 0
5 echo -n "Enter an operator: "; read OPR
6 test "$OPR" = "x" && exit 0
7 echo -n "Enter the second integer: "; read IN2
8 test "$OP2" = "x" && exit 0
9 RES=$(expr "$IN1" "$OPR" "$IN2")
10 echo "Answer: $IN1 $OPR $IN2 = $RES";
11 done;

Any ideas? Thanks.
 

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shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list. Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)). FILES
/etc/shells lists shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.10 4 Jun 2001 shells(4)
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