bash-master-20190930
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This is GNU Bash, version 5.0. Bash is the GNU Project's Bourne
Again SHell, a complete implementation of the POSIX shell spec,
but also with interactive command line editing, job control on
architectures that support it, csh-like features such as history
substitution and brace expansion, and a slew of other features.
For more information on the features of Bash that are new to this
type of shell, see the file `doc/bashref.texi'.
There is also a
large Unix-style man page.
The man page is the definitive description
of the shell's features.