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Full Discussion: Pipe grep to rm
Top Forums UNIX for Dummies Questions & Answers Pipe grep to rm Post 302559578 by airlocksniffer on Tuesday 27th of September 2011 01:14:51 PM
Old 09-27-2011
Pipe grep to rm
We have a number of OS X 10.6 machines who have home folders with incorrect permissions, which are causing managed prefs not to be applied correctly and not allowing saving. I need to delete all home folders whose name is numerical and modified before a certain date. I'm not sure of the date part but here is what I have as a command to be run over ARD:

ls /Volumes/Macintosh\ HD/Users | grep '[0-9]' | xargs rm -r

This works up until after the second pipe but doesn't actually remove the folder, just returns me to a command prompt (I'm testing on another machine in Terminal). I'd also like to add the find command after the grep command to narrow it down to folders modified before a certain date (unless grep can do mod dates, haven't had any luck finding that). Any help or suggestions for a n00b?
 

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LEARN ABOUT OSX

new

NEW(1)                                                               [nmh-1.5]                                                              NEW(1)

NAME

       new - report on folders with new messages

       fnext - set current folder to next folder with new messages

       fprev - set current folder to previous folder with new messages

       unseen - scan new messages in all folders with new messages

SYNOPSIS

       new [sequences] [-mode mode] [-folders foldersfile] [-version] [-help]

       fnext is equivalent to new -mode fnext

       fprev is equivalent to new -mode fprev

       unseen is equivalent to new -mode unseen

DESCRIPTION

       New  in  its  default  mode  produces  a  one-line-per-folder  listing of all folders containing messages in the listed sequences or in the
       sequences listed in the profile entry "Unseen-Sequence".  Each line contains the folder, the number of messages in the  desired  sequences,
       and the message lists from the .mh_sequences file.  For example:

            foo     11.* 40-50
            bar    380.  760-772 824-828
             total    391.

       The `*' on foo indicates that it is the current folder.  The last line shows the total number of messages in the desired sequences.

       New crawls the folder hierarchy recursively to find all folders, and prints them in lexicographic order.  Override this behavior by provid-
       ing foldersfile containing the pre-sorted list of folders new should check, one per line.

       In fnext and fprev modes, new instead changes to the next or previous matching folder, respectively.

       In unseen mode, new executes scan sequences for each matching folder.

FILES

       $HOME/.mh_profile          The user profile

PROFILE COMPONENTS

       Path:                To determine the user's nmh directory
       Current-Folder:      To find the default current folder
       Unseen-Sequence:     The name of the unseen message sequence

SEE ALSO

       scan(1), mh-format(5)

HISTORY

       Based on Luke Mewburn's new (http://www.mewburn.net/luke/src/new).

MH.6.8                                                             11 June 2012                                                             NEW(1)
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