https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V...
Bash also incorporates the POSIX shell, but has extensions. This is fine if you are using it, but if you are writing a script which may need to run on another system, its better to keep it to POSIX.
(edit: URL - thanks userbinator)
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V...
Bash also incorporates the POSIX shell, but has extensions. This is fine if you are using it, but if you are writing a script which may need to run on another system, its better to keep it to POSIX.
(edit: URL - thanks userbinator)