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Top Forums Shell Programming and Scripting script to check large directory--help Post 302514055 by ygemici on Thursday 14th of April 2011 05:06:57 PM
Old 04-14-2011
Quote:
Originally Posted by Corona688
Easily solved with -d '\n' for the most part. It does have -d though. Oh, goodie. 300 miles more rope to hang ourselves with. Smilie I think you missed my point -- xargs would know the maximum size of args for the system already and split accordingly.

Code:
$ cat >argc.c <<EOF
> #include <stdio.h>
> int main(int argc, char *argv[])
> { printf("argc=%d\n", argc); return(0); }
> EOF
$ gcc argc.c
$ while true ; do echo -e "a\na\na\na\na\na\na\na" ; done | xargs ./a.out
argc=65533
argc=65533
argc=65533
argc=65533
argc=65533
^C
$

...so the -n999 is redundant.

Shoving the too many args into backticks and for doesn't make too many args not be too many args. You have to do while read FILENAME ; do stuff ; done
Where is -d option ? and all system has it ?
Yep..xargs must know max-args Smilie
we don't need xargs because of shell internals is enough
I can all process in for loop but we can use while loop when required control expression

regards
ygemici
 

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mdfind(1)						    BSD General Commands Manual 						 mdfind(1)

NAME
mdfind -- finds files matching a given query SYNOPSIS
mdfind [-live] [-count] [-onlyin directory] [-name fileName] query DESCRIPTION
The mdfind command consults the central metadata store and returns a list of files that match the given metadata query. The query can be a string or a query expression. The following options are available: -0 Prints an ASCII NUL character after each result path. This is useful when used in conjunction with xargs -0. -live Causes the mdfind command to provide live-updates to the number of files matching the query. When an update causes the query results to change the number of matches is updated. The find can be cancelled by typing ctrl-C. -count Causes the mdfind command to output the total number of matches, instead of the path to the matching items. -onlyin dir Limit the scope of the search to the directory specified. -name fileName Searches for matching file names only. -literal Force the provided query string to be taken as a literal query string, without interpretation. -interpret Force the provided query string to be interpreted as if the user had typed the string into the Spotlight menu. For example, the string "search" would produce the following query string: (* = search* cdw || kMDItemTextContent = search* cdw) EXAMPLES
The following examples are shown as given to the shell. This returns all files with any metadata attribute value matching the string "image": mdfind image This returns all files that contain "MyFavoriteAuthor" in the kMDItemAuthor metadata attribute: mdfind "kMDItemAuthor == '*MyFavoriteAuthor*'" This returns all files with any metadata attribute value matching the string "skateboard". The find continues to run after gathering the initial results, providing a count of the number of files that match the query. mdfind -live skateboard To get a list of the available attributes for use in constructing queries, see mdimport(1), particularly the -X switch. SEE ALSO
mdimport(1), mdls(1), mdutil(1), xargs(1) Mac OS X June 10, 2004 Mac OS X
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