Updating multiple ports with portmaster

Doug Barton dougb at FreeBSD.org
Sun Mar 27 16:54:28 UTC 2011

On 03/27/2011 00:26, perryh at pluto.rain.com wrote:
> Doug Barton<dougb at freebsd.org>  wrote:
>> On 03/26/2011 10:00, Matthew Seaman wrote:
>>> pkg_version -vIL= | awk '/^p5-/ { print $1 }'  | xargs portmaster
>> That's a good suggestion, but if you want to use that technique, better
>> would be:  portmaster `pkg_version -vIL= | awk '/^p5-/ { print $1 }'` ...
> Unless the number of ports involved is very large, either
> should produce exactly the same effect.  Absent a -n or -s
> switch, xargs collects up to 5000 args or a ~250KB command
> line for each invocation of (in this case) portmaster.

Interesting ... not sure how I got it in my mind that xargs always runs 
them one at a time, but thanks for clarifying this. :)



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