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Top Forums Shell Programming and Scripting Use parameter expansion over a parameter expansion in bash. Post 303043417 by wisecracker on Tuesday 28th of January 2020 10:53:10 AM
Old 01-28-2020
Hi nez...
I do not like 'eval' but here goes and is also 'dash' compliant...
Code:
Last login: Tue Jan 28 14:17:35 on ttys000
AMIGA:amiga~> dash
AMIGA:\u\w> path="/var/talend/nat/cdc"
AMIGA:\u\w> path=$( eval path=${path%/*} && echo ${_##*/} )
AMIGA:\u\w> echo "${path}"
nat
AMIGA:\u\w> exit
AMIGA:amiga~> _

 

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PATHINFO(3)								 1							       PATHINFO(3)

pathinfo - Returns information about a file path

SYNOPSIS
mixed pathinfo (string $path, [int $options = PATHINFO_DIRNAME | PATHINFO_BASENAME | PATHINFO_EXTENSION | PATHINFO_FILENAME]) DESCRIPTION
pathinfo(3) returns information about $path: either an associative array or a string, depending on $options. PARAMETERS
o $path - The path to be parsed. o $options - If present, specifies a specific element to be returned; one of PATHINFO_DIRNAME, PATHINFO_BASENAME, PATHINFO_EXTENSION or PATHINFO_FILENAME. If $options is not specified, returns all available elements. RETURN VALUES
If the $options parameter is not passed, an associative array containing the following elements is returned: dirname, basename, extension (if any), and filename. Note If the $path has more than one extension, PATHINFO_EXTENSION returns only the last one and PATHINFO_FILENAME only strips the last one. (see first example below). Note If the $path does not have an extension, no extension element will be returned (see second example below). If $options is present, returns a string containing the requested element. CHANGELOG
+--------+--------------------------------------------+ |Version | | | | | | | Description | | | | +--------+--------------------------------------------+ | 5.2.0 | | | | | | | The PATHINFO_FILENAME constant was added. | | | | +--------+--------------------------------------------+ EXAMPLES
Example #1 pathinfo(3) Example <?php $path_parts = pathinfo('/www/htdocs/inc/lib.inc.php'); echo $path_parts['dirname'], " "; echo $path_parts['basename'], " "; echo $path_parts['extension'], " "; echo $path_parts['filename'], " "; // since PHP 5.2.0 ?> The above example will output: /www/htdocs/inc lib.inc.php php lib.inc Example #2 pathinfo(3) example showing difference between null and no extension <?php $path_parts = pathinfo('/path/emptyextension.'); var_dump($path_parts['extension']); $path_parts = pathinfo('/path/noextension'); var_dump($path_parts['extension']); ?> The above example will output something similar to: string(0) "" Notice: Undefined index: extension in test.php on line 6 NULL NOTES
Note For information on retrieving the current path info, read the section on predefined reserved variables. Note pathinfo(3) is locale aware, so for it to parse a path containing multibyte characters correctly, the matching locale must be set using the setlocale(3) function. SEE ALSO
dirname(3), basename(3), parse_url(3), realpath(3). PHP Documentation Group PATHINFO(3)
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