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]]> http://tlrobinson.net/blog/2009/03/30/determining-the-absolute-absolute-path-of-a-shell-script/comment-page-1/#comment-27478 Mike Wed, 15 Jul 2009 14:54:00 +0000 http://tlrobinson.net/blog/?p=91#comment-27478 <p>[code]<br>#!/bin/sh<br><br>P=<code>pwd</code><br>cmd=<code>echo $0 | sed -e 's#^./##'</code><br><br>case $cmd in <br>/<em>) ;;<br></em>) cmd=$P/$cmd;;<br>esac<br><br>script_name=""<br>install_root_bin=""<br><br>while <br> install_root_bin=<code>expr <br> $cmd'/' : '(/)[^/]*/$' <br> | $cmd'/' : '(.*[^/])//*[^/][^/]*//*$' <br> | .</code> <br> l=<code>ls -ld $cmd | grep '^[Ll]'</code><br> [ -n "$l" ]<br>do<br> m=<code>expr "$l" : '.* (.*)'</code><br> script_name=<code>expr "$cmd" : '.*/([^/]*)$'</code><br> case $m in<br> /*) cmd=$m ;;<br> *) cmd=$synopsys_install_root_bin/$m ;;<br> esac<br>done<br><br>echo $cmd<br>[/code]<br><br><br>Works on HP-UX, Solaris, Linux, OSX. Always returns the path/name of the script even if linked with a symlink.</p> [code]
#!/bin/sh

P=pwd
cmd=echo $0 | sed -e 's#^./##'

case $cmd in
/) ;;
) cmd=$P/$cmd;;
esac

script_name=""
install_root_bin=""

while
install_root_bin=expr <br> $cmd&#39;/&#39; : &#39;(/)[^/]*/$&#39; <br> | $cmd&#39;/&#39; : &#39;(.*[^/])//*[^/][^/]*//*$&#39; <br> | .
l=ls -ld $cmd | grep '^[Ll]'
[ -n "$l" ]
do
m=expr "$l" : '.* (.*)'
script_name=expr "$cmd" : '.*/([^/]*)$'
case $m in
/*) cmd=$m ;;
*) cmd=$synopsys_install_root_bin/$m ;;
esac
done

echo $cmd
[/code]


Works on HP-UX, Solaris, Linux, OSX. Always returns the path/name of the script even if linked with a symlink.

]]> http://tlrobinson.net/blog/2009/03/30/determining-the-absolute-absolute-path-of-a-shell-script/comment-page-1/#comment-25703 tlrobinson Mon, 30 Mar 2009 20:43:29 +0000 http://tlrobinson.net/blog/?p=91#comment-25703 <p>I noticed the OS X readlink doesn't support any of the options the GNU one does. I wanted a solution that works on most Unixy platforms (I've tested it on OS X 10.5 and a recent Ubuntu) so it couldn't rely on features that aren't standard.</p> I noticed the OS X readlink doesn't support any of the options the GNU one does. I wanted a solution that works on most Unixy platforms (I've tested it on OS X 10.5 and a recent Ubuntu) so it couldn't rely on features that aren't standard.

]]> http://tlrobinson.net/blog/2009/03/30/determining-the-absolute-absolute-path-of-a-shell-script/comment-page-1/#comment-25702 Martin Kühl Mon, 30 Mar 2009 20:33:06 +0000 http://tlrobinson.net/blog/?p=91#comment-25702 <p>The readlink(1) from GNU coreutils (greadlink(1) when installed via MacPorts) provides this functionality as <code>greadlink -f</code>.<br>If you don’t mind invoking Python, that provides the same functionality (system-independently) in the function <code>os.path.abspath</code>.<br>I’m sure perl and ruby have similar functions somewhere.</p> The readlink(1) from GNU coreutils (greadlink(1) when installed via MacPorts) provides this functionality as greadlink -f.
If you don’t mind invoking Python, that provides the same functionality (system-independently) in the function os.path.abspath.
I’m sure perl and ruby have similar functions somewhere.

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