I'm newby so the question is simple. After I connected to server via putty I want to execute some command. Suppose that command will be performed for long time (e.g. extracting files from large archive or mysql backup). Is there a way to execute a command in such a way that it wount be aborted after I close putty!
thank you in advance!
The best way is to run screen, execute your command, then detach using ^A, D. When you ssh into your machine again, run screen -r and your session will be reattached just as you left it. Screen can also do much more, check out the man page to see what's possible.
There's a package called "screen" that needs to be installed on the host you're logged into. This has nothing to do with putty, or ssh - this is the way Unix shells work. When you disconnect a shell, you're logged off, and all your processes get a HUP signal. Most (all) processes shut down. "Screen" makes your shell continue running, so you may reconnect later.
Yes! You should background the process and disown it.
So, if I wanted to run the command "foo", I'd do nohup foo & && disown. The nohup keeps it from dying when SIGHUP is sent to it and sends the output to a file, and disown removes the parent reference so it doesn't die when the spawning shell does.
