From my home pc using putty, I ssh'ed into a remote server, and I ran a python program that takes hours to complete, and as it runs it prints stuff. Now after a while, my internet disconnected, and I had to close and re-open putty and ssh back in. If I type 'top' I can see the python program running in the background with its PID number. Is there a command I can use to basically re-open that process and see it printing its stuff again?
Thanks
As noted, best practice is to use screen or tmux (before starting the program, so you do not need to ask this question).
But you can also attach to a running process with a debugger such as gdb (alluded to here as ddd, a wrapper for gdb), as well as with strace (see this question). That's better than nothing - but gdb and strace would not give you the program's command-line again (though this question suggests a way). At least strace could give you some clues of what the program was attempting to print.
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