Re: Prefix each line with "input line"

[Hans Schou]

On Mon, 3 Oct 2011, Ole Tange wrote:

> On Sun, Oct 2, 2011 at 12:15 PM, Hans Schou <chlor@schou.dk> wrote:
> > Hi
> >
> > I have a number of servers and sometimes I want to check a setting on all of
> > them. Like "what is the default search domain".
> >
> > For convenience I have all the server names in the environment:
> >  export srv_all="example.org example.com"
> > (could be in a file, but environment is always at hand)
>
>
> > Then I get the answer by running:
> >  parallel ssh {} "grep search /etc/resolv.conf" ::: $srv_all
> > and the output:
> >  search example.org
> >  search example.xxx
>
> The idea of --onall/--nonall is to never write 'parallel ssh {}'.
> Instead you will keep the list of servers in .profile/sshloginfile or
> you will use -S to select a different file or --profile to select a
> different profile.
>
> Please test --tag (from git version beef9c1) and see if that solves your issue:
>
>  parallel -S .. --tag --nonall run this

Well, it works, but I had one server down sp it took quite a time 
before I got the first answer:

$ parallel -S .. --tag --nonall grep search /etc/resolv.conf
min     ssh: connect to host min port 22: No route to host
sko     search example.org
far     search example.org

>  parallel -S .. --tag --onall run this ::: with these args

??? Why would I have args? Like this?:

$ parallel -S .. --tag --onall ::: date uptime
Use of uninitialized value $a in substitution (s///) at 
/usr/local/bin/parallel line 862, <$fh> line 2.
Use of uninitialized value $a in substitution (s///) at 
/usr/local/bin/parallel line 863, <$fh> line 2.
Use of uninitialized value in concatenation (.) or string at 
/usr/local/bin/parallel line 104, <$fh> line 2.
min     ssh: connect to host min port 22: No route to host
min     ssh: connect to host min port 22: No route to host
sko     man okt  3 01:03:18 CEST 2011
sko      01:03:18 up 1 day, 16:53,  6 users,  load average: 0.00, 
0.09, 0.13
far     Mon Oct  3 01:03:17 CEST 2011
far      01:03:18 up 83 days,  4:18,  1 user,  load average: 0.00, 
0.02, 0.00

...and I think there was a bug:
$ parallel --version
GNU parallel 20111002

/hans
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