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Just want to know , is there anyway that we can disable the tab key ( press twice will show the available commands in linux / unix BASH console ) ?

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4 Answers 4

up vote 3 down vote accepted

Bash uses readline for completion and key bindings. You can set your own options in ~/.inputrc, and system wide options in /etc/inputrc. If these do not exist, you can create them yourself. These are read at shell login, so changes you make are not in effect until you create a new login shell.

If you want to disable completion entirely, you can use a typical GNU "yes to no":

set disable-completion on

If you want completion, but just not with tab, you can bind tab to insert itself:

TAB: self-insert

This will allow you to still use completion with ESC ESC, or you can bind completion to another key of your liking, e.g. C-t:

TAB: self-insert
C-t: complete

There is a huge amount of customization you can do; I refer you to the Readline and Bash documentation for more information.

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You can disable autocompletion completely. Some information:

I depends on what exactly do you want to do.

If you just want to disable advanced autocompletion you can either use "complete -r" or remove /etc/bash_completion*

Reading the man page for "complete" might help here. It's a shell thing, it really doesn't have anything to do with a particular distro or another.

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You can pick and choose the key mappings you wish to disable without having to turn off autocomplete.

Example: To disable autocomplete for multiple Esc key presses add the following to your ~/.inputrc:

"\e\e": ""

Read the "Readline" section of the bash man page for detailed information.

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Another possibility - disable bash (and friends) entirely! There are plenty of other shells to use on Linux.

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