Since <colon> is a separator in this context, directory names that might be used in PATH should not include a <colon> character.
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03
Since <colon> is a separator in this context, directory names that might be used in PATH should not include a <colon> character.
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03
path name
path
Portable Operating System Interface