very unusual question about while

#1 (**permalink**) 08-15-2006

is there anyway to make while run a command faster than per second?

timed=60
while [ $timed -lt 60 ]

do
command
sleep 1

done

i need something that can run a script for me more than one time in one second. can someone help me out here?

jim mcnamara · #2 (**permalink**) 08-15-2006

Code:

#!/bin/ksh
timed=60
while [ $timed -lt 60 ]
do
   command &
   timed=$timed-1
done
wait

This may exceed the maximum number of allowed processes - so you may want to set 60 down to something like 15 or 20

nathan · #3 (**permalink**) 08-15-2006

Also, you could see if your system has 'usleep'.

Code:

USLEEP(1)                                                            USLEEP(1)

NAME
       usleep - sleep some number of microseconds

SYNOPSIS
       usleep [number]

DESCRIPTION
       usleep sleeps some number of microseconds.  The default is 1.

#4 (**permalink**) 08-16-2006

usleep doesn't appear to be a command. its for c, c++ and perl and i dont know that.

and i tried jims method too but it doesn't seem to be working my system. when u minus 1 from a value that isn't greater than 1 my system makes the result 0 instead of the .3333333 or whatever the remainder is.

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