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Full Discussion: $dirname ??????
Top Forums UNIX for Dummies Questions & Answers $dirname ?????? Post 302555284 by pludi on Wednesday 14th of September 2011 10:18:26 AM
Old 09-14-2011
$0 is the path and name of the current running script. So if you called it as /full/path/to/app it's that, and if you called it as ./app, it's only that.
Now the first (inner) dirname removes the name of the application, so it's only /full/path/to or . anymore.
With the second dirname, you're shortening it even more, becoming /full/path and . respectively.

What you probably need is a simple MYAPPDIR=$( pwd )
 

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DIRNAME(1)							   User Commands							DIRNAME(1)

NAME
dirname - strip last component from file name SYNOPSIS
dirname NAME dirname OPTION DESCRIPTION
Output NAME with its last non-slash component and trailing slashes removed; if NAME contains no /'s, output `.' (meaning the current direc- tory). --help display this help and exit --version output version information and exit EXAMPLES
dirname /usr/bin/ Output "/usr". dirname stdio.h Output ".". AUTHOR
Written by David MacKenzie and Jim Meyering. REPORTING BUGS
Report dirname bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report dirname translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
basename(1), readlink(1) The full documentation for dirname is maintained as a Texinfo manual. If the info and dirname programs are properly installed at your site, the command info coreutils 'dirname invocation' should give you access to the complete manual. GNU coreutils 8.12.197-032bb September 2011 DIRNAME(1)
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