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Full Discussion: if statement with two conditions -e, &&
Top Forums Shell Programming and Scripting if statement with two conditions -e, && Post 74925 by vgersh99 on Tuesday 14th of June 2005 11:50:44 AM
Old 06-14-2005
Quote:
Originally Posted by yongho
Question: I just started learning shell scripting a few days ago and I was under the assumption that you didn't need to typeset anything.
you don't.
if you don't,

count=$((count + 1))
becomes
count=$(($count + 1))

Quote:
Originally Posted by yongho
One of my previous counters looked like this (in a while statement, not an if statement:
var1=`expr $var1 + $var2`
..and it worked.
this NOT using ksh/bash builtin capabilities for doing simple integer math.
Quote:
Originally Posted by yongho
But when I tried the expr command in the if statement, it didn't increment at all. Would you know why this is? Could it be because once you enter an if statement, you must use different rules?
nope, that's not it.
are you saying that the 'expr ' increment did not work, but the 'count=$((count+1))' did?
there must be something else different in your 'while' loop.
is your 'while' loopbeing piped with data?
 

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LEARN ABOUT DEBIAN

gpe-question

GPE-QUESTION(1) 						   gpe-question 						   GPE-QUESTION(1)

NAME

       gpe-question - GPE interface for asking questions from shell scripts.

SYNOPSIS

       gpe-question [---icon] name {--question "Question text"} {--buttons icon1:text1} [icon2:text2 ...]

DESCRIPTION

       This manual page was written for the Debian(TM) distribution because the original program does not have a manual page.

       gpe-question provides dialogues to raise a question within the GPE Palmtop Environment with cancel and ok buttons.

OPTIONS

       --question STRING
	  The question to ask the user via the dialogue.

       --buttons type:label
	  The type and label of the button(s) to be shown. Repeat for additional buttons.

EXAMPLES

       gpe-question "test" --question "Do you want to check first?"  --buttons YES:yes NO:no

AUTHOR

       This manual page was written by Neil Williams <codehelp@debian.org> for the Debian(TM) system (but may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version
       published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

AUTHOR

       Moray Allen
	  Author.

COPYRIGHT

       Copyright (C) 2007 Neil Williams

Debian 1							 January 16, 2007						   GPE-QUESTION(1)
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