I need my script to be executed with stdbuf -i0 -o0 -e0 otherwise user will wonder why there is no output (becuase of pipe buffer). How can I acheive it?
#!/usr/bin/stdbuf -i0 -o0 -e0 /bin/bash
results in
/usr/bin/stdbuf: invalid mode ‘0 -o0 -e0 /bin/bash’
Usually there is no need to unbuffer the whole script. This is necessary with certain programs only.
But if you want to do it that way you can simply call the script from itself:
#! /bin/bash
if [ yes != "$STDBUF" ]; then
STDBUF=yes /usr/bin/stdbuf -i0 -o0 -e0 "$0"
exit $?
fi
Appears there are two suboptimal solutions:
Suboptimal at least when you provide input to command. Otherwise they might be both ok. script records your input and unbuffer just doesn't let you input properly. YMMV
