On 4/8/09, Greg Saunders <[email protected]> wrote: > Hi all, I'm looking for the best way to run a remote process. SSH with keys? > "ssh [email protected] remoteprocess" > > Is there a better way, especially if you have to execute 20 remote commands > each time and those commands are determined on the fly and not known ahead > of time. > > Thanks! > Greg
"best" really depends on your situation... Personally, I find SSH to be the best for me. If you need to use keys, use them, if you don't want to, don't. If you want to execute 20 commands, use a list of commands. Some simple examples: # Commands are executed sequentially: % command1; cmd2; cmd3 # Commands are only executed if the previous one returns zero: % command1 && cmd2 && cmd3 # Commands are only executed if the previous one returned nonzero (error): % command1 || cmd2 || cmd3 A more complex example: # Run command 1, then command 2, and finally command 3 only if command 2 did not return an error % command1; cmd2 && cmd3 >From the bash man page: http://linux.die.net/man/1/bash ---------------------------------------- Shell Grammar <...> Lists A list is a sequence of one or more pipelines separated by one of the operators ;, &, &&, or ||, and optionally terminated by one of ;, &, or <newline>. Of these list operators, && and || have equal precedence, followed by ; and &, which have equal precedence. A sequence of one or more newlines may appear in a list instead of a semicolon to delimit commands. If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each command to terminate in turn. The return status is the exit status of the last command executed. The control operators && and || denote AND lists and OR lists, respectively. An AND list has the form command1 && command2 command2 is executed if, and only if, command1 returns an exit status of zero. An OR list has the form command1 || command2 command2 is executed if and only if command1 returns a non-zero exit status. The return status of AND and OR lists is the exit status of the last command executed in the list. -Mark C. _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
