I just tested and it works nice!! Thank you Mariano. Just a quick note, to read from /var/log requires root privilege which many users cannot acquire. I tested using a bash script and then tailf the output file:
#!/bin/sh while true; do echo $(date) sleep 2 done > output.txt Cheers, Hernán 2017-03-20 8:24 GMT-03:00 Mariano Martinez Peck <marianop...@gmail.com>: > > On Mon, Mar 20, 2017 at 6:00 AM, Hernán Morales Durand < > hernan.mora...@gmail.com> wrote: > >> Hi guys, >> >> I need to monitor Unix command execution inside the image. The commands >> use heavy computation so they usually report progress in the terminal. >> >> Are OSProcess or OSSubprocess ready to do in-image monitoring so I can >> watch the same terminal output in the Transcript updating for example every >> 10 seconds? >> >> > Hi Hernan, > > There is a tail -f example in OSSubprocess documentation that prints the > result on an inpsector and updates it [1]. However, OSSubprocess has > problems on Linux with the default VM... you must use the threaded > heartbeat (not the itimer).. see recent threads discussions for this. > > Let me know if that works. > > > [1] https://github.com/marianopeck/OSSubprocess#processing-streams-while- > running > > > >> Particularly for OSProcess I couldn't find any method to fetch partial >> output. >> >> Cheers, >> >> Hernán >> >> > > > -- > Mariano > http://marianopeck.wordpress.com >
