> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of neubyr
> Sent: 17/05/2011 06:36
> To: CentOS mailing list
> Subject: xargs with max each line / argument
>
> How do I pass xargs input one line at a time to subsequent command?
> For example I want to install rubygems by reading a text file as shown
> below, however the arguments are getting passed all at once to the
> 'gem install' command. I hace tried -L (max-lines) and -n (max args)
> options, but it didn't work. What's missing here?? Any help?
>
> $ cat gem.list.1
> mkrf
> rake
> xmlparser
>
> $ awk '{ print $0 }' gem.list.1 | xargs -L 1 -0 -I name sudo
> gem install name
> ERROR: could not find gem mkrf
> rake
> xmlparser
> locally or in a repository
>
>
> thanks,
> neuby.r
Hi.
As others have mentioned, a simple cat or use of < into xargs will simplify things. The max-args switch _is_ the one you are
looking for:
--max-args=max-args, -n max-args
Spceifically:
cat gem.list.1 | xargs --max-args=1 sudo gem install
will do what you want, I think - please test it first. You could add --interactive to xargs to help with this, or even just:
cat gem.list.1 | xargs --max-args=1 echo sudo gem install
which will just dump the commands that would be run (using echo).
hth Andy
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