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Full Discussion: integer comparison in ksh
Top Forums Shell Programming and Scripting integer comparison in ksh Post 302540368 by kshji on Wednesday 20th of July 2011 11:57:24 AM
Old 07-20-2011
(( )) is the best method - my opinion. You can use variable without $, about like in C.
Code:
y=100
(( a=y+2 ))
(( b=a+3 ))
if (( b < a )) ; then
   echo "b<a"
fi
(( b < a )) && echo "b<a" || echo "a<=b"
(( a= (b+100)*12 ))
# floating (LANG ... =>  , or . delimeter)
typeset -F2  l1 l2 l3 
l1=1.22 
l2=2.22 
(( l3=l1*l2)) 
echo $l3

Ofcourse you can use test command, but (( )) is nicer for numbers.
 

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LEARN ABOUT PLAN9

suspend

suspend(1)							   User Commands							suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10							    15 Apr 1994 							suspend(1)
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