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Full Discussion: String comparsion compare *
Top Forums Shell Programming and Scripting String comparsion compare * Post 302736123 by cstsang on Monday 26th of November 2012 10:49:30 PM
Old 11-26-2012
String comparsion compare *

Dear all

Would anyone tell me how to prevent user from input non asterisk(i.e. *) character via keyboard?
Code:
#!/bin/ksh
targetHour=-1
while [[ ($targetHour != "*") && (($targetHour -lt 0)||($targetHour -gt 23)) ]]
do
  echo "Please input target hour":
  read targetHour
done

When I execute the above coding, and then input a "j", it return the following message:

The specified number is not valid for this command.

Thank you very much

Last edited by cstsang; 11-27-2012 at 12:01 AM..
 

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PCLOCK(1)						      General Commands Manual							 PCLOCK(1)

NAME
pclock - pixmap clock SYNOPSIS
pclock [options] DESCRIPTION
This manual page documents briefly the pclock command. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. pclock is a program that places a small analog clock program on the desktop of X. It was designed to run under the WindowMaker window man- ager. It uses any 64x64 pixmap as a background. OPTIONS
The programs follow the usual GNU command line syntax, with long options starting with two dashes (`-') and short optoins starting with one dash. A summary of options is included below. -B PIXMAP, --background=PIXMAP Use the given pixmap as the clock background (size must be 64x64). -H COLOR, --hands-color=COLOR Draw the hands (hour, minute and second) in the specified color. -S COLOR, --second-hand-color Draw the second hand in the specified color -h, --help Show summary of options. --hour-hand-length=INT Draw the hour hand with the specified length of INT. --minute-hand-length=INT Draw the minute hand with the specified length of INT. --second-hand-length=INT Draw the second hand with the specified length of INT. --second-hand-width=INT Draw the minute hand with the specified width of INT. -s, --second-hand Don't display the second hand. -v, --version Show version of program. -w, --withdrawn Don't start up in a withdrawn (iconic) state. AUTHOR
This manual page was written by Darren Benham <gecko@debian.org>, for the Debian GNU/Linux system (but may be used by others). The soft- ware is copyrighted (c) 1998 by and released under the GPL v2. Author: Alexander Kourakos <Alexander@Kourakos.com> Web: http://www.kourakos.com/~awk/pclock/ PCLOCK(1)
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