[Tutor] interactif or not
Michael P. Reilly
arcege at gmail.com
Sat Jun 4 19:32:46 CEST 2005
On 6/3/05, Cedric BRINER <work at infomaniak.ch> wrote:
> How can I know if a script is launched interactively or not because I'd
> like to make a script verbose or not depending if it is executed as
> interactive or not.
> If I invoke it in a shell.. then it can be verbose
> If it is launched from a crontab.. then it is less verbose.
If you want to know if your program has been launched from an interactive
terminal or from a system background process like cron or init, then you
look to see if stdin is a tty. Unix is usually very careful about who has a
"controlling tty" and who does not. In Python, file objects have an isatty()
method that will return True or False.
isinteractive = sys.stdin.isatty()
How you make a program this way manually (i.e. to make a program into cron)
is slightly more complicated, but still all the tools are there in Python.
There's so many different worlds,
So many different suns.
And we have just one world,
But we live in different ones.
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