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Top Forums Shell Programming and Scripting one line command to change mode only if necessary Post 302603588 by vbe on Thursday 1st of March 2012 12:07:47 PM
Old 03-01-2012
Yes!!
Code:
chmod 554 *

Smilie

More seriously what would be the point to look if the files have or not tests are CPU/time consuming...
My concern is more what about if directories are found there, they would be unreadable for others, if thst is the case (subdirs...) you are anyway going to have to look, in which case the one liner you are looking for is most certainly going to use find...
 

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AFILE(1)						      General Commands Manual							  AFILE(1)

NAME
afile - display type and creator of Apple Macintosh files (netatalk format) SYNOPSIS
afile [ -a ] file ... DESCRIPTION
afile displays the name and Macintosh type and creator of the file arguments. Tests whether the file is an AppleDouble header, in which case it checks the corresponding data fork exists, or assumes it is a data fork in which case it looks for the corresponding AppleDouble to find the type/creator information. afile does not look at any of the extension mapping files such as AppleVolumes.system. OPTIONS
-a Include directories and data files of unknown type (i.e. without corresponding AppleDouble) in output. DIAGNOSTICS
returns exit status 0 if all files have a corresponding valid .AppleDouble header or data fork, or 99 for bad command line options. Other- wise it returns the following error code relating to the last invalid file. 1 file doesn't exist 2 file is unreadable 3 file is directory 4 file is AppleDouble without data fork 5 file is AppleDouble with unreadable data fork 6 file is data fork without AppleDouble 7 file is data fork with unreadable AppleDouble 8 file is data fork with short AppleDouble 9 bad magic in AppleDouble SEE ALSO
achfile(1), afpd(1) 26 Feb 1998 AFILE(1)
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