delete a line if it contain a particular match from a file in bash

Question

I have a file contain lines like the following.

10   TEST   NO   SOMETHING 
20   TEST   YES  SOMETHING 
101  TEST   YES  SOMETHING 
100  TEST   NO   SOMETHING

How can I delete only the line that has 10 at the beginning using sed or any other tool if I find a matching word 10?

Answer 1

sed '/^10[^0-9]/d' file

If you want to edit file "in place", add sed's option -i.

---

grep -v '^10[^0-9]' file