Question

My goal is to display only the text after last ] symbol.

echo MY_TEXT | grep -o "[^\]]*$"

The output is just the last symbol.
If I change “]” symbol to any letter, it works as expected.

Examples:

$ echo Hello World | grep -o '[^o]*$'
rld  # and this is correct!
$ echo He]ll]o Wo]rld | grep -o "[^\]]*$"
d   # but expected: rld

Why behavior is different for symbol o and ]?

Thank you in advance.

Answer 1

You do not need to escape the ]:

echo 'He]ll]o Wo]rld' | grep -o "[^]]*$"

Produces: rld