unix - strip words after matching character -

i have file there lines in pattern. want remove text after _. how do in unix?

x y z 1_2 3_4 5_6

i tried command:

$ sed 's/_.*//'

but returns:

x y z 1

however want

x y z 1 3 5

thanks

just remove every _ + character:

$ echo "x y z 1_2 3_4 5_6" | sed 's/_\w//g' x y z 1 3 5

or, if want remove space, remove nonspace characters:

sed 's/_[^ ]*//g'

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