If bash finds this variable in the environment when the shell starts, and its value is ‘ t ’, bash assumes that the shell is running in an emacs shell buffer and disables line editing. Bash is the shell, or command language interpreter, for the gnu operating system. If the operating system on which bash is running provides these special files, bash uses them;
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Bash contains features that appear in other popular shells, and. Introduction (bash reference manual)1 introduction ¶ what is bash? Bash is the shell, or command language interpreter, for the gnu operating system.
Otherwise it emulates them internally with this behavior:
If the file argument to one of the. This is edition 5.3, last updated 18 may 2025, of the gnu bash reference manual, for bash, version 5.3. Some of the shells that bash has borrowed concepts from are the bourne shell (sh), the. Otherwise, it is set to the filename used to invoke.
Bash contains features that appear in other popular shells, and some features that only appear in bash. This manual (bash) is available in the following formats:
