3.1.Features of the shell

There are several useful features of the shell:

In addition to the features listed above, GNU Bash (the Bourne-Again Shell) has other features[26] that you can learn about from the resources listed in SectionA.3.1, “General information on the Bash shell” and the sections that follow.

[23] It's possible, though, that you typed the command so many commands ago that it's not in your command history, in which case the shell would respond with

some_string: Event not found.

[24] Emacs is discussed in Section5.2, “GNU Emacs”.

[25] From the Emacs built-in tutorial.

[26] For example, if you're using Bash, try typing a single letter or a short string of letters (such as fi) and then pressing Tab twice.

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