Date: Sun, 9 Nov 2008 07:25:49 +0100 From: Polytropon <freebsd@edvax.de> To: Jonathan McKeown <jonathan+freebsd-questions@hst.org.za> Cc: freebsd-questions@freebsd.org Subject: Re: eps to jpg conversion - which program? Message-ID: <20081109072549.7272df20.freebsd@edvax.de> In-Reply-To: <200811081212.46286.jonathan%2Bfreebsd-questions@hst.org.za> References: <49143663.9070804@shopzeus.com> <20081107201954.5d7e4993.freebsd@edvax.de> <200811081212.46286.jonathan%2Bfreebsd-questions@hst.org.za>
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On Sat, 8 Nov 2008 12:12:46 +0200, Jonathan McKeown <jonathan+freebsd-questions@hst.org.za> wrote:
> You can also save yourself repeated calls to basename by using
>
> for f in *eps; do
> convert ${f%.eps}.jpg
> done
>
> Look under parameter expansion in the manpage for sh(1) (or bash(1) if you
> have bash installed).
Yes, that's a very good hint, I will use this in the future.
Note that $f as first parameter is missing (source for convert).
> As far as I can tell csh/tcsh doesn't support this
> useful feature.
Well, I prefer the C Shell (instead of BASH) as primary dialog shell,
but for scripting, I always stay with the "good old" Bourne Shell,
simply because it's the standard scripting shell for UNIX, and it's
compatible to most Linusi, too (where /bin/sh@ -> /bin/bash,
but NB ! -f /bin/bash in FreeBSD).
> Essentially, a Bourne-type shell with parameter expansion expands
> ${variable#prefix} or ${variable%suffix} to $variable with the prefix or
> suffix, respectively, removed.
So this would be more efficient:
#!/bin/sh
for f in *eps; do
[ ! -f ${f%.eps}.jpg ] && convert $f ${f%.eps}.jpg
done
--
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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