linux - Continuously print stdout and write to file -


i have program intermittently print stdout. want see output on screen , redirect file.

i can use tee follows:

foo | tee ./log.txt

however, print output screen when foo has terminated not allowing me observe progress of program.

is there way continuously show output of program , redirect log file?

is acceptable write output file , display live ?

$> foo > ./log.txt & tail -f ./log.txt

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