Basename for directory variable Post: 302987232

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Top Forums Programming Basename for directory variable Post 302987232 by rbatte1 on Wednesday 7th of December 2016 07:13:11 AM

12-07-2016

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I'm agreeing with RudiC.

There are several quotes to consider and their uses vary. Usually in sh/ksh/bash scripts:-

" - Double quotes wrap a string, preserving spaces in variables, and allow the shell to work with meta-characters with the string, so variables get expanded, escaped characters have their special meaning etc. This is allowing what is known as interpolation.
' - Single quotes wrap a string, preserving everything as literal text, so there is no interpolation.
` - Back-quote or Back-tick is common for command substitution, as in result=`command` although aparently this is to be discouraged. I'm not sure the reasons why but I'm told that this is the preferred format - result=$(command)

There are similarly important rules for the variety of brackets, (, [, <, { and their appropriate opposites and a preceding $ can cause them to do yet more things.

I hope that this helps,
Robin

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plsdidev

PLSDIDEV(3plplot)						    PLplot API							 PLSDIDEV(3plplot)

NAME

       plsdidev - Set parameters that define current device-space window

SYNOPSIS

       plsdidev(mar, aspect, jx, jy)

DESCRIPTION

       Set  relative  margin width, aspect ratio, and relative justification that define current device-space window.  If you want to just use the
       previous value for any of these, just pass in the magic value PL_NOTSET. It is unlikely that one should ever  need  to  change  the  aspect
       ratio but it's in there for completeness. If plsdidev(3plplot) is not called the default values of mar, jx, and jy are all 0. aspect is set
       to a device-specific value.

       Redacted form: plsdidev(mar, aspect, jx, jy)

       This function is used in example 31.

ARGUMENTS

       mar (PLFLT, input)
	      Relative margin width.

       aspect (PLFLT, input)
	      Aspect ratio.

       jx (PLFLT, input)
	      Relative justification in x. Value must lie in the range -0.5 to 0.5.

       jy (PLFLT, input)
	      Relative justification in y. Value must lie in the range -0.5 to 0.5.

AUTHORS

       Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot.  This man page was automatically generated from the DocBook  source  of  the
       PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.

SEE ALSO

       PLplot documentation at http://plplot.sourceforge.net/resources.

								   August, 2012 						 PLSDIDEV(3plplot)

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