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Full Discussion: shell problem
Top Forums UNIX for Dummies Questions & Answers shell problem Post 302695631 by jim mcnamara on Monday 3rd of September 2012 10:19:05 AM
Old 09-03-2012
Code:
if [ -z "$1" (space needed here) ]

When you test -z you expect an empty (NULL) value. You should to put it in quotes.
The [ ] characters have to have at least one space on each side of them. They are actually keywords in shell.
 

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Text::Sass::Functions(3pm)				User Contributed Perl Documentation				Text::Sass::Functions(3pm)

NAME
Text::Sass::Functions VERSION
$LastChangedRevision: 59 $ SYNOPSIS
DESCRIPTION
SUBROUTINES
/METHODS new Creates a new object. rgb(red, green, blue) Converts triplet into a color. red(color) Returns the red part of a color. green(color) Returns the green part of a color. blue(color) Returns the blue part og a color. mix(color1, color2, weight = 50%) Mixes two colors together. hsl(hue, saturation, lightness) Converts as hsl triplet into a color. hue(color) Returns the hue part of a color. saturation(color) Returns the saturation part of a color. lightness(color) Returns the lightness part of a color. adjust_hue(color) Changes the hue of a color, can be called as adjust-hue. lighten(color, amount) Makes a color lighter. darken(color, amount) Makes a color darker. saturate(color, amount) Makes a color more saturated. desaturate(color, amount) Makes a color less saturated. grayscale(color) Converts a color to grayscale. complement(color) Returns the complement of a color. unquote(str) Removes the quotes from a string. quote(str) Adds quotes to a string. percentage(num) Converts a unitless number to a percentage. round(num) Rounds a number to the nearest whole number. ceil(num) Rounds a number up to the nearest whole number. floor(num) Rounds a number down to the nearest whole number. abs(num) Returns the absolute value of a number. unit(num) Returns the unit of a value. unitless(num) Returns true if the number has no unit. DIAGNOSTICS
CONFIGURATION AND ENVIRONMENT
DEPENDENCIES
strict warnings Carp POSIX Readonly Convert::Color Text::Sass::Expr INCOMPATIBILITIES
BUGS AND LIMITATIONS
Missing alpha routines rgba & hsla methods. mix() doesn't support weight. AUTHOR
Author: BjA~Xrn-Olav Strand LICENSE AND COPYRIGHT
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.10 or, at your option, any later version of Perl 5 you may have available. perl v5.14.2 2012-04-05 Text::Sass::Functions(3pm)
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