Re: [Help-bash] The best way to trim trailing .tiff or .tif?

[Eric Blake]

On 10/05/2012 08:26 AM, Eric Blake wrote:

> 
> Your use of 'function', 'local', and '[[' agree with your choice of
> #!/bin/bash, in that your script is definitely non-POSIX; extended
> globbing is also a bash extension, and therefore right in line with your
> intent of being bash-only.  However, if you want to scrub things so that
> you can be portable to POSIX sh, I think the most concise you can get is:
> 
> cmd () {
>   case $1 in
>     *.tif | *.tiff) echo "${1%%.tif*}" ;;

Correction - you want shortest suffix stripping, not longest suffix; so
this would be "${1%.tif*}" in case $1 is 'a.tif.b.tiff'.

>     *) echo "$1" ;;
>   esac

At any rate, the case statement is essential to ensure that only a
suffix of .tif or .tiff will be stripped, and that a file 'a.tif.bak'
will still be passed through verbatim.

-- 
Eric Blake   address@hidden    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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