variable expansion which will remove a file extension

variable expansion which will remove a file extension

[zzapper]

Hi,
How do I write a variable expansion which will remove a file extension eg 
fred.tex -> fred

This is what I hacked:-

zip=${file//\.[[:alnum:]]*/}

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Re: variable expansion which will remove a file extension

[Dominic Mitchell]

zzapper wrote:
> Hi,
> How do I write a variable expansion which will remove a file extension eg 
> fred.tex -> fred
> 
> This is what I hacked:-
> 
> zip=${file//\.[[:alnum:]]*/}

How about:

zip=${file%.*}

-Dom

RE: variable expansion which will remove a file extension

[paul Lew]

>>>>> "zzapper" == zzapper  <david@tvis.co.uk> writes:

    zzapper> Hi, How do I write a variable expansion which will remove
    zzapper> a file extension eg fred.tex -> fred

    zzapper> This is what I hacked:-

    zzapper> zip=${file//\.[[:alnum:]]*/}

$file:r

Re: variable expansion which will remove a file extension

[Bart Schaefer]

On Mar 17, 11:52pm, zzapper wrote:
}
} How do I write a variable expansion which will remove a file extension eg 
} fred.tex -> fred

	${var:r}


13.1.4 Modifiers
----------------

After the optional word designator, you can add a sequence of one or
more of the following modifiers, each preceded by a `:'.  These
modifiers also work on the result of _filename generation_ and
_parameter expansion_, except where noted.

h
     Remove a trailing pathname component, leaving the head.  This works
     like `dirname'.

r
     Remove a filename extension of the form `.XXX', leaving the root
     name.

e
     Remove all but the extension.

t
     Remove all leading pathname components, leaving the tail.  This
     works like `basename'.

Re: variable expansion which will remove a file extension

[Christian Schneider]

* zzapper <david@tvis.co.uk> typed:
> How do I write a variable expansion which will remove a file extension eg 
> fred.tex -> fred
> 
> This is what I hacked:-
> 
> zip=${file//\.[[:alnum:]]*/}

Use ``${foo:r}''. ":r" remove a filename extension; its described in
zshexpn(1) /Modifiers

Re: variable expansion which will remove a file extension

[zzapper]

Bart Schaefer <schaefer@brasslantern.com> wrote in
news:060317162338.ZM18794@torch.brasslantern.com: 

> ----------------
> h
>      Remove a trailing pathname component, leaving the head.  This
>      works like `dirname'.
> 
> r
>      Remove a filename extension of the form `.XXX', leaving the root
>      name.
> 
> e
>      Remove all but the extension.
> 
> t
>      Remove all leading pathname components, leaving the tail.  This
>      works like `basename'.

#!zsh
# test script
fred='/bin/path/fred.txt'
echo ${fred:e}
echo ${fred:t}
echo ${fred:r}
echo ${fred:h}
echo ${fred:h:h}
echo ${fred:t:r}

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