>> parallel -a iplist.txt 'ssh -qtt {} "sudo whoami" </dev/null'
>> parallel -a iplist.txt 'ssh -qtt {} "sudo whoami"' </dev/null
>> cat iplist.txt | parallel 'ssh -qtt {} "sudo whoami"'
Thank you .
I have a strange problem ,
if cat iplist.txt | parallel 'ssh -qtt {} "sudo /usr/sbin/userdel -rf
abcuser " ' , it still freeze ,
but sudo other cmd will work well .
sosogh
From: Ole Tange
Date: 2015-08-23 12:05
To: sosogh
CC: parallel
Subject: Re: use parallel for ssh -tt "xxxx"
On Fri, Aug 21, 2015 at 4:01 AM, sosogh <sos...@mail.com> wrote:
> without -tt in ssh ,everything goes well:
> parallel -a iplist.txt ' ssh -q {} "whoami" '
>
> but with -tt , parallel will not exit , it will freeze there when finishing
> the last job.
> parallel -a iplist.txt ' ssh -qtt {} "sudo whoami" '
>
> why I need -tt is to work around "ssh sudo: sorry, you must have a tty to
> run sudo".
The work around is:
parallel -a iplist.txt 'ssh -qtt {} "sudo whoami" </dev/null'
parallel -a iplist.txt 'ssh -qtt {} "sudo whoami"' </dev/null
cat iplist.txt | parallel 'ssh -qtt {} "sudo whoami"'
The reason for your problems is due to the first job gets STDIN as its
controlling tty (from man parallel):
stdin (standard input) will be passed to the first process run.
I seem to remember it was implemented to be compatible with some xargs
situation.
/Ole
