enable command is used to enable or disable shell builtins in the current shell session. Shell builtins are commands that are built into the shell itself, rather than being separate executable files.
The basic syntax for the
enable command is as follows:
enable [-a] [-dnps] [-f filename] [name ...]
The options for the
enable command are as follows:
-a: Enables all builtins.
-d: Disables builtins.
-n: Displays a list of builtins that are currently enabled.
-p: Displays a list of builtins that are currently disabled.
-s: Enables/disables builtins in a way that persists across shell sessions.
-f filename: Enables/disables builtins in a script file.
To enable a specific builtin, simply specify its name as an argument to the
enable command. For example, to enable the
echo builtin, you would use the following command:
To disable a builtin, use the
-d option followed by the name of the builtin. For example, to disable the
cd builtin, you would use the following command:
enable -d cd
The following table lists all available options for the
||Enables all builtins.|
||Displays a list of builtins that are currently enabled.|
||Displays a list of builtins that are currently disabled.|
||Enables/disables builtins in a way that persists across shell sessions.|
||Enables/disables builtins in a script file.|
If you are having trouble enabling or disabling a builtin, make sure that you have the correct name for the builtin. You can use the
type command to check if a command is a builtin or an external command. For example, to check if
echo is a builtin, you would use the following command:
echo is a builtin, the output will indicate that it is a shell builtin.
enable command is primarily used for managing builtins in the current shell session. If you want to permanently enable or disable a builtin, you should add the appropriate
enable command to your shell startup file (e.g.
.bashrc for Bash).