My usage profile of tmux is making many simultaneous ssh connections to
remote hosts, and having these grouped together in a tmux session.
The only way I could do this programmatically is something like
$ tmux new-window -d -t mysession: -n window-remotehost "ssh remotehost
\"my shellcommandline on the remote host\""
I hope this already shows the problem: Both tmux and ssh only accept a
shell commandline for launching a command. That means that the remote
shell commandline has to be escaped twice, and thus can't be
parameterized with a shell variable.
I'd like to see that tmux also accepts positional arguments to be
launched as a comamnd with execv(2) or friends, just like openvt(1) does
it.
For example, having an interface like
$ tmux new-window blablabla -- ssh remotehost "my shellcommandline on
the remote host"
would remove one level of shell escaping and enable one to parameterize the
command in a script:
$ upgradecommand="apt-get update && apt-get upgrade && if
some_condition; then do_something_silly; fi; whatever else there is to do"
$ tmux new-window blablabla -- ssh remotehost "$upgradecommand"
At the moment using shell command strings, there is really no way around
doubly-escaping the command, so it is basically unworkable to write
useful scripts. Not even saving the command to a shell script file would
work because ssh would need the file on all remote hosts.
I hope I could point out what bugs me. Would it be possible to integrate
the positional args interface?
Have a nice day
-Jens Stimpfle
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