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Full Discussion: script to iterate
Top Forums Shell Programming and Scripting script to iterate Post 302561537 by Tytalus on Tuesday 4th of October 2011 11:29:14 AM
Old 10-04-2011
something along the lines of:

Code:
(rewriting your equation to isolate an iteration:

x=y/ln(3.455613x)
)

#  y=1;x=1;for i in {1..100}; do x=$(calc "$y/(log(3.455613*$x))"); echo $x;done
0.806452
0.975715
.
<snip>
.
0.890054
0.890054

where I have calc as a function:

#  typeset -f calc
calc ()
{
    nawk 'BEGIN { OFMT="%f"; print '"$*"'; exit}'
}

In this case, then:

#  calc "log(0.890054)"+1.24
1.123527

#  calc 1/0.890054
1.123527

You may prefer to define an epsilon value and check the diff between successive iterations to define your accuracy.

HTH

This User Gave Thanks to Tytalus For This Post:
saint2006
 

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LEARN ABOUT OSF1

uudemon

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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