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UNIX for Dummies Questions & Answers
Syntax Error Script
Post 302698645 by vbe on Monday 10th of September 2012 10:38:18 AM
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Hi All,
I have been fighting with a syntax error for the last 2 days, still haven't got the solution. Could you please help me, your help will be greatly appreciated.
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./disk_space_util.sh: Syntax error at line 24 : `then' is not expected.
=================================
cat disk_space_util.sh
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#
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I get this error when I try to run my script
(BTW, this is a simple script I am supposed to write for my class)
$ menuscript
menuscript: syntax error at line 89 : `"' unmatched
$
Here is the code (Any help is greatly appreciated)
(Line numbers included)
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Evening All (or morning for some),
Could anyone have a look at the below and advise where i've going wrong with the syntax as i keep getting the below error while trying to run.
Any help would be really apprecaited.
./testout: line 13: syntax error near unexpected token `else'
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LEARN ABOUT MINIX
pnmpsnr
pnmpsnr(1) General Commands Manual pnmpsnr(1) NAME
pnmpsnr - compute the difference between two portable anymaps SYNOPSIS
pnmpsnr [pnmfile1] [pnmfile2] DESCRIPTION
Reads two PBM, PGM, or PPM files, or PAM equivalents, as input. Prints the peak signal-to-noise ratio (PSNR) difference between the two images. This metric is typically used in image compression papers to rate the distortion between original and decoded image. If the inputs are PBM or PGM, pnmpsnr prints the PSNR of the luminance only. Otherwise, it prints the separate PSNRs of the luminance, and chrominance (Cb and Cr) components of the colors. The PSNR of a given component is the ratio of the mean square difference of the component for the two images to the maximum mean square difference that can exist betwee any two images. It is expressed as a decibel value. The mean square difference of a component for two images is the mean square difference of the component value, comparing each pixel with the pixel in the same position of the other image. For the purposes of this computation, components are normalized to the scale [0..1]. The maximum mean square difference is identically 1. So the higher the PSNR, the closer the images are. A luminance PSNR of 20 means the mean square difference of the luminances of the pixels is 100 times less than the maximum possible difference, i.e. 0.01. SEE ALSO
pnm(5) 04 March 2001 pnmpsnr(1)