I am taking a class in UNIX and have written a script that needs to countdown from a number that is read in from the keyboard to zero. If no number is given the start of the countdown should default to 10.
I can't get this to do the default
#! /bin/sh
echo Enter a number here to countdown... (2 Replies)
Hi guys, I've found two nifty little scripts on these forums one which detects if the F5 key has been pressed:
#/bin/sh
_key()
{
local kp
ESC=$'\e'
_KEY=
read -d '' -sn1 _KEY
case $_KEY in
"$ESC")
while read -d '' -sn1 -t1 kp
do
_KEY=$_KEY$kp
... (0 Replies)
Hi all,
Does anyone know of any FUN countdown script that I can use for my script? At the moment, am just using sleep 10 or more and then print stuff into the screen to allow more time for the user to decide whether they want to continue running the script or abort?
Just thought of wanting... (3 Replies)
Hello, I have another problem with my script - I would like to have a countdown timer visible on the screen, and at the same time, I want te be able to do something else. And when the time runs out, I need to know about that inside the script somehow and do some action. I guess that would require 2... (3 Replies)
In the below bash when the perl is it possible to hide the commands from running on screen and display a process countdown?
For example, on the cygwin screen now the user sees each process in the command running as running protocol refGene, running protocol popfreq_all, etc... Could a... (0 Replies)
I would like this to work with seconds as well.
#!/bin/bash
#
if ; then
echo "Incorrect usage ! Example:"
echo './CountDown.sh -d "Jun 10 2011 16:06"'
echo 'or'
echo './CountDown.sh -m 90'
exit 1
fi
now=`date +%s`
if ; then
until=`date -d... (7 Replies)
Discussion started by: drew77
7 Replies
LEARN ABOUT OPENSOLARIS
tc-hfsc
HFSC(8) Linux HFSC(8)NAME
HFSC - Hierarchical Fair Service Curve's control under linux
SYNOPSIS
tc qdisc add ... hfsc [ default CLASSID ]
tc class add ... hfsc [ [ rt SC ] [ ls SC ] | [ sc SC ] ] [ ul SC ]
rt : realtime service curve
ls : linkshare service curve
sc : rt+ls service curve
ul : upperlimit service curve
o at least one of rt, ls or sc must be specified
o ul can only be specified with ls or sc
SC := [ [ m1 BPS ] d SEC ] m2 BPS
m1 : slope of the first segment
d : x-coordinate of intersection
m2 : slope of the second segment
SC := [ [ umax BYTE ] dmax SEC ] rate BPS
umax : maximum unit of work
dmax : maximum delay
rate : rate
For description of BYTE, BPS and SEC - please see UNITS section of tc(8).
DESCRIPTION (qdisc)
HFSC qdisc has only one optional parameter - default. CLASSID specifies the minor part of the default classid, where packets not classified
by other means (e.g. u32 filter, CLASSIFY target of iptables) will be enqueued. If default is not specified, unclassified packets will be
dropped.
DESCRIPTION (class)
HFSC class is used to create a class hierarchy for HFSC scheduler. For explanation of the algorithm, and the meaning behind rt, ls, sc and
ul service curves - please refer to tc-hfsc(7).
As you can see in SYNOPSIS, service curve (SC) can be specified in two ways. Either as maximum delay for certain amount of work, or as a
bandwidth assigned for certain amount of time. Obviously, m1 is simply umax/dmax.
Both m2 and rate are mandatory. If you omit other parameters, you will specify linear service curve.
SEE ALSO tc(8), tc-hfsc(7), tc-stab(8)
Please direct bugreports and patches to: <netdev@vger.kernel.org>
AUTHOR
Manpage created by Michal Soltys (soltys@ziu.info)
iproute2 31 October 2011 HFSC(8)