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Full Discussion: Doubt in xargs command
Top Forums Shell Programming and Scripting Doubt in xargs command Post 302548291 by zaxxon on Thursday 18th of August 2011 04:13:01 AM
Old 08-18-2011
It means the following:
Using -i is old, depricated, ie. should be no longer used. Instead, you should use -I. The curled brackets {} is just the string, which should be replaced by the argument which is being handed over to xargs. So you can position it in the line's syntax. You could use other characters but the curled brackets instead. This placeholder is just being defined with -I, example:
Code:
$> echo bla| xargs -I_ touch _
$> ls bla
bla

In this case I just took a single underscore instead of opening and closing curled bracket. Curled brackets are just some kind of "standard" for this most people use because it is or might be easier to read. If there would be more than one usage of the argument in a command's syntax (for example let's say 2), you could use 2 times the _ or {} or whatever character(s) you defined with -I as placeholder in your following command supplied by xargs. Example:
Code:
$> touch file1 file2 file3
$> ls -1
file1
file2
file3
$> ls -1| xargs -I_ mv _ _.txt
$> ls -1
file1.txt
file2.txt
file3.txt

In simple cases where you have just 1 argument being passed to xargs and it should be placed at the end your command, you don't even have to use -I as xargs just places it automatically at the end of the command:
Code:
echo 5| xargs touch

This User Gave Thanks to zaxxon For This Post:
royalibrahim
 

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LEARN ABOUT CENTOS

git-pack-redundant

GIT-PACK-REDUNDANT(1)						    Git Manual						     GIT-PACK-REDUNDANT(1)

NAME

       git-pack-redundant - Find redundant pack files

SYNOPSIS

       git pack-redundant [ --verbose ] [ --alt-odb ] < --all | .pack filename ... >

DESCRIPTION

       This program computes which packs in your repository are redundant. The output is suitable for piping to xargs rm if you are in the root of
       the repository.

       git pack-redundant accepts a list of objects on standard input. Any objects given will be ignored when checking which packs are required.
       This makes the following command useful when wanting to remove packs which contain unreachable objects.

       git fsck --full --unreachable | cut -d ' ' -f3 |  git pack-redundant --all | xargs rm

OPTIONS

       --all
	   Processes all packs. Any filenames on the command line are ignored.

       --alt-odb
	   Don't require objects present in packs from alternate object directories to be present in local packs.

       --verbose
	   Outputs some statistics to stderr. Has a small performance penalty.

SEE ALSO

       git-pack-objects(1) git-repack(1) git-prune-packed(1)

GIT

       Part of the git(1) suite

Git 1.8.3.1							    06/10/2014						     GIT-PACK-REDUNDANT(1)
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