Re: tlug: C-Shell Script

[Paul Gampe <paulg@example.com>]

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tlug note from Paul Gampe <paulg@example.com>
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On Tue, 1 Apr 1997, Venkatesh RAGHAVAN wrote:

raghavan>--------------------------------------------------------
raghavan>tlug note from Venkatesh RAGHAVAN <raghavan@example.com>
raghavan>--------------------------------------------------------
raghavan>Hello,
raghavan>I am trying to use the 'expr' function in my shell script to calculate
raghavan>to variables. My Shell script statement looks like below;
raghavan>
raghavan>E_COORD=`expr \($E-$W\)\*\)\*\($X-1)\)/$COL+$W`

Hi,

Not sure what you are trying to compute but:

	( $E - $W ) * ) * ( $X - 1 ) ) / $COL + $W

looks like the brackets are misplaced.

Paul.

raghavan>N_COORD=`expr $N-\(\($N-$S\)\*\($Y-1)/$ROWS\)`
raghavan>echo $E_COORD $NCOORD
raghavan>
raghavan>I am getting an error message which says expr:non-numeric expression.
raghavan>Can any one please tell me what is wrong with using the expr function.
raghavan>Thanks in advance 
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