GNU Readline is a library for command line edition, used by bash and some other programs

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Implement a shell in a bash script [closed]

I am trying to emulate a shell in a bash script, like this: cmd_shell() { while true; do read -e -p 'pass> ' command run_cmd $command done } It works ok, and the option ...
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551 views

Logging interactive input and output without capturing all typed input and control characters

I am trying to log output from an interactive command-line program; units, specifically. I have tried using tee like this: units | tee units.log or script like this: script -c units units.log ...
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1answer
42 views

Using bind to read the current command line

I'm using bind -x to execute a script whenever a certain key sequence is pressed. For example I have a script at /usr/local/bin/foo with the contents #!/bin/bash echo foo If I run bind -x '" ": ...
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1answer
101 views

Change in bash prompt depending on whether first character is a space

Right now every command which starts with a space character gets ignored by bash history (HISTCONTROL=ignoreboth in ~/.bashrc). I would like to have a better visual cue when I press space as the first ...
2
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1answer
31 views

Readline: Binding an ANSI escape sequence to a key

I would like to bind a key with bash / readline, to clear the bottom of my console screen. The ANSI sequence to clear the bottom of the screen is \e[J, so I tried to add the following line to my ...
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readline - yank resets set-mark

I want to implement this binding "\C-xk": kill-region # turn previous word into HTML/XML # opening and closing tag pair "\C-xh": "\e \eb\C-xk<\C-y>\e </\C-y>\C-x\C-x" but it returns to ...
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44 views

readline - use of modifiers other than control and meta

I'm trying to use Apple's ⌘ command and ⌥ option keys to map some functions in readline to no avail. As per the man page I used octal values but that doesn't seem to work \xHH the eight-bit ...
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3answers
626 views

~/.inputrc file not sourcing correctly

I have this ~/.inputrc file that I created for certain key bindings. # mappings for Ctrl-left-arrow and Ctrl-right-arrow for word moving "\e[1;5C":forward-word "\e[1;5D":backward-word ...
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3answers
137 views

Deleting input forward to the next space

When in terminal I can use Ctrl+w to delete a whole word or IP (. is separator for each octet) when going leftward of prompt. However, if I try Alt+d to go rightward of prompt, terminal recognizes "." ...
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2answers
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How to display control characters (^C, ^D, ^[, …) differently in the shell

When you type control characters in the shell they get displayed using what is called "caret notation". Escape for example gets written as ^[ in caret notation. I like to customize my bash shell to ...
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What is the general format of keyname for key bindings in “inputrc” file?

I understand that the format for key bindings in inputrc file is: keyname: function-name or macro For keyname, I saw things like: "\e[B" "\e[1~" "\e[5D" "\M-l" "\C-[OD" "\e\e[D" What is the ...
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2answers
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Why does “shift-tab” result in “Escape” in the terminal?

I just noticed this by accident. I use the vi readline mode (run set -o vi in bash) so it is particularly noticeable; in emacs readline mode I don't think Esc does anything, but in vi mode it exits ...
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1answer
42 views

Keys in the keyboard are not functioning in an interactive script!

I am using this code in bash to make my script interactive. What I mean by interactive is to let the script ask me questions such as what is the path to my data: #!/bin/bash -ef read userInput if [[ ...
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4answers
2k views

How do I switch to vi editing mode in readline?

I want to switch to vi editing mode in a readline environment. But I don't want to use 'set -o vi'. I want to temporarily switch using a keyboard shortcut. The man page says I can do this with ...
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2answers
47 views

How can I make readline add pre-“typed” text on terminal startup?

By pre-"typed", I mean the interactive console has code text waiting for the user to (edit and) run by simply pressing enter. It looks like something readline should support, but a confirmation that ...
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paste clipboard text plus string with .inputrc

I've got in my .inputrc something like "\C-v": "script.sh " I use a link from my clipboard as a parameter for the script, so I type ctrl-v and then paste the link, and then hit enter. So I've seen ...
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1answer
41 views

Script To Update Multiple Hostnames

Needing a script to read row by row, then ssh into the machine and update the hostname of the machine, then exit and continue with the next row. We have a cvs file that contains the previous hostname ...
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1answer
54 views

How do I convert inputrc settings to bashrc ones?

I'd like to keep my modifications to as few files as possible, so I don't want to touch .inputrc unless I absolutely have to. So, given .inputrc lines like: "\e[5~": history-search-backward "\e[6~": ...
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1answer
382 views

Why does bash link to ncurses?

I think I've noticed this before but never thought about it much; now I'm curious. > ldd /bin/bash linux-vdso.so.1 => (0x00007fff2f781000) libtinfo.so.5 => ...
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39 views

reverse-i-search (Ctrl-r) with history -r?

I'm searching a way to reload the bash history before executing "Ctrl-r" command. Or better, complete using the .bash_history instead of the in-memory dump. Every Terminal has its "own" history but ...
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1answer
43 views

Some characters are filtered in bash

I'm currently running a Xubuntu image using VirtualBox and a strange issue just started occurring: I cannot enter a or c in a terminal or terminal emulator. A and C (that is, a/c + left/right Shift or ...
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1answer
225 views

How to have type-ahead apply to bash history search (Ctrl-R)?

Context Typeahead in bash: good When a bash shell is busy (initializing, running a command), one can type before the next prompt appears. If the shell has launched a program, that program will ...
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34 views

readline emacs equivalent to vi's 'fc'

In vi readline, I can use the command fc where c is a character I want to find and jump to in the current line. E.g. echo 'hello world' fw --------> Is there an equivalent command in emacs mode? ...
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How do I install a PHP CLI with a usable interactive prompt on Debian Wheezy?

When I install php5-cli on Debian Wheezy (currently testing), the interactive prompt is very unusable due to missing readline support (bug 341868). What's the easiest way to install a version linked ...
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How to repeat currently typed in parameter on bash console?

I was just typing something along the lines of: mv foo/bar/poit/zoid/narf.txt and suddenly realized, damn, I have to type large parts of that parameter again mv foo/bar/poit/zoid/narf.txt ...
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134 views

bash/gnu readline multiline command: move row up/down

How to move one editing row up (back) or down (forward) in a multi-line command in bash/readline? Somethnig like gj/gk in Vim.
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46 views

Is it possible to (re)define what readline (embedded in bash) defines as a word?

Many of the special Readline constructs allow the user to edit the command line in various ways. For instance, certain keystrokes allow moving forward a word. A word is defined to be what bash itself ...
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1answer
449 views

read with history

How can I make the builtin read command support history, by pressing the up/down key to cycle through them? I've tried catching when you press the up key, however it doesn't seem to work with read: ...
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3answers
255 views

confusing behavior of emacs-style keybindings in bash

Bash offers many useful emacs-style keybindings for simple commandline editing. For example, Ctrl+w deletes ("kills") word left from the cursor. Another keybinding, Alt+d is supposed to be a "mirror" ...
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157 views

inputrc not loading correctly

I added the following to my ~/.inputrc: set show-all-if-ambiguous on # single tab to start completion help set completion-ignore-case on # completion is case-insensitive $include /etc/inputrc ...
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1answer
61 views

How can I change readline settings on keypress?

I checked docs for readline (in man bash), and I can't find a way to solve one problem: how to change readline setting (set ... on/off) on keypress? Keybindings seem to have form: key:function or ...
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1answer
177 views

Remap Return key in terminal to prevent accidental command on productions servers

I am looking for a way to remap the key for executing commands in terminal (I am using bash) to prevent accidental commands on productions servers. Return should be disabled. I tried the following ...
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115 views

Bash command not found due to stray garbage characters

What is the cause of this behavior? $ cd ../ $ bash: $'\210\210cd': command not found This happens sometimes (rarely) when I enter a command, there is no visible character preceding the cd, still ...
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Is there any way to enable Ctrl+L to clear screen when 'set -o vi' is set?

When you press Ctrl+L in bash default mode the screen is cleared. But when I run set -o vi and press Ctrl+L the keystroke is printed (^L). Is there any way to keep this behavior?
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Clear the terminal in “vi” mode? (equivalent of “ctrl+l” from “emacs” mode) [duplicate]

I am aware of Ctrl+L on bash terminal (using it on Ubuntu) which clears the screen by applying appropriate scrolling on bash terminal. After learning that the terminal is by default set to emacs mode ...
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1answer
58 views

bash show-all-if-ambiguous turns on spontaneously

I am using tmux and bash. I find that, at seemingly random intervals, my running shells have show-all-if-ambiguous set to on. This is a significant annoyance to me, since many of my operations are in ...
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68 views

Are there any command line IRC clients that use readline?

I'm currently using irssi as my irc client, which is ok, mostly, but there are a couple of things that would make the chat experience better: readline support -- the ability to use vi key bindings ...
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2answers
338 views

Bash displays international characters as escape sequences

When I press certain keys (e.g. German umlauts) in the bash command line, I get escape sequences. For example, ß gives me \303. These escape sequences are treated as single characters, so one ...
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3answers
268 views

How to undo changes in the commands-history?

In UNIX systems you can press top and bottom arrows to navigate through the previous commands. This is extremely handy. Sometimes, I go up and find a command that I want to use again, but with some ...
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2answers
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Coming back to a command I have partially written [duplicate]

Often I find myself partway through writing a long command (or chain of commands) and realise I need to run another command before I can finish typing out this current one. Examples Sometimes, I... ...
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1answer
159 views

Enable cursor keys in python shell over ssh

I run OpenElec on a Pi. I can ssh to the Pi and open a python shell. How do I enable the cursor keys to work like up getting to last command in the python shell, like it does on my Ubuntu box. Now ...
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2answers
152 views

How do I swap the two last command line arguments?

$ ln -s ./dir/target.txt /path/to/source.txt{cursor here} How do swap file typed filenames in command line? Alt+T swaps words, not filenames, resulting in ln -s ./dir/target.txt /path/to/txt.source. ...
2
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1answer
434 views

Strip newline from piped input

I've been setting up a script to work with haste-server. This takes piped or file input (tail /var/log/messages | haste and haste < /path/to/file.txt) and submits it to the server which then ...
2
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1answer
162 views

readline - why does does it only do carriage return and not a line feed when reaching end of line?

I developped a python application that uses the cmd module to make an interactive command-line interface. This cmd module uses readline for command-line management: completion, history... My issue ...
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185 views

Assign both menu-complete and dynamic-complete-history to TAB

Is there a way for me to assign both menu-complete and dynamic-complete-history to Tab (or one to Tab and the other to Tab-Tab) in .inputrc? I'm thinking there might be a way to setup a function and ...
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1answer
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.inputrc TAB not behaving as expected

I'm on a roll today, here's another question: How come when I put these into .inputrc, they both do the same thing? TAB: menu-complete Shift-TAB: menu-complete-reverse i.e. they both do whatever ...
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1answer
628 views

What are the bash shell length limitations for here-docs?

What are the length limitations for using here-docs as part of bash command lines? I am finding that short here-docs work fine, but when they get longer there is some point or structure after which ...
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2answers
182 views

Is one bash shellshock fix tar file for SLES bad?

SERVER:/home/user # rpm -Uvh --test readline-5.1-24.4.7406.0.PTF.898762.i586.rpm warning: readline-5.1-24.4.7406.0.PTF.898762.i586.rpm: V3 DSA signature: NOKEY, key ID b37b98a9 error: Failed ...
1
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1answer
217 views

Custom tab-completion in bash's `read`

Is there a way to "import" a list of words into bash's read builtin to have custom tab-completion? I've been writing a wrapper script for suckless' minimalist irc client "ii", and I don't have a way ...
3
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1answer
171 views

Control-p freezes SSH session

I have encountered a strange situation on one of my SSH ARM machines I use on a daily basis. Every time I connect to the server and press Ctrl+P to invoke previous-history BASH function SSH connection ...