he command-line arguments appear in this file as a set of strings separated by null bytes ('\0'), with a further null byte after the last string.

It is all you need. You have got command and its arguments separated by null byte \0. Encoding of the characters is based on the locale, but it should not really matter.

Do you have some specific example where you need help?

The command-line arguments appear in this file as a set of strings separated by null bytes ('\0'), with a further null byte after the last string.

It is all you need. You have got command and its arguments separated by null byte \0. Encoding of the characters is based on the locale, but it should not really matter.

Do you have some specific example where you need help?