I'm writing a pile of python code. There's a lot of remote execution going on using ssh or the paramiko interface in python. Either way, I discovered a startling nuance:
* When I run programs remotely which are shell scripts (bash), they behave like they are interactive, i.e., the output is line buffered. * When I run programs written in other languages, I see no output at all until the program finishes. Right now, the programs that I remotely execute are either bash or python. For the bash code, it is desirable that the line buffered output be maintained. For the python code, I added an option to the remote execution interface that says, "Run which on the remote side to get the pathname of the command, and then instead of running the command, run python -u pathname_of_command instead". The -u causes the python program to run unbuffered. But, this is not a general solution. The general solution would be to run an expect script that would simply act as a passthrough to guarantee that whatever I run would think it had a tty, and would therefore be line buffered by default instead of fully buffered. I know it would look something like this: #! /usr/bin/expect -- spawn something interact It's that middle line I don't know how to craft. Anyone? TIA -- Time flies like the wind. Fruit flies like a banana. Stranger things have .0. happened but none stranger than this. Does your driver's license say Organ ..0 Donor?Black holes are where God divided by zero. Listen to me! We are all- 000 individuals! What if this weren't a hypothetical question? steveo at syslang.net _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
