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string manipulation in ksh

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# 1  
Old 11-13-2008
Question string manipulation in ksh
Hi all,

I'm trying to extract the name of a script that is being run with a full path. i.e.
if the script name is /some/where/path/script_name.ksh
I'd like to extract only: script_name

i know that it is possible to do so in two phases:
echo "${0##*/}" will give me script_name.ksh
and echo "${0%.*}" will give me /some/where/path/script_name

and joining them:
a=`echo "${0##*/}"`
echo $a
echo "${a%.*}"
Does anybody know how to do this is one command, without using the temporary variable "a"?

Thanks
# 2  
Old 11-13-2008
With sed:

Code:
echo "$0" | sed 's_.*/\(.*\)\..*_\1_'

# 3  
Old 11-13-2008
Quote:
Originally Posted by iceman
[...]
Does anybody know how to do this is one command, without using the temporary variable "a"?
Yes Smilie

Code:
% s=/some/where/path/script_name.ksh zsh -c 'print $s:t:r'
script_name

P.S. What's the problem with the two-pass approach?
# 4  
Old 11-13-2008
There is a little-known usage of "basename" for this. You specify the suffix as the second parameter. See "man basename".

basename /some/where/path/script_name.ksh .ksh

Response is:
script_name
# 5  
Old 11-13-2008
one command
I wanted it to be in one command so it would be more compact.

the basename command is also useful.

Thanks
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