bash backspace not working bash backspace not working

when I hit the Backspace key, I get a space. @Alexpux, what's wrong with _FORTIFY_SOURCE=2? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. If there are any new updates, Windows 10 / 11 will be installing them. Take the backspace for example, the remote host expects some character to be used as "erase/backspace" , while you pressing backspace in the terminal , the terminal program will send some character to the remote host, if what the remote host expects diffs with the characters sent by the terminal program, you would encounter this issue. Your answer could be improved by explaining why your solution correctly would resolve it for the user in the question. They are easy to follow and have both basic and advanced measures. If the problem is with the keyboard, it will not work even in this scenario. In the terminal, press Ctrl + v and press your backspace. Do I need a thermal expansion tank if I already have a pressure tank? I got linux on my PC and prefer the tcsh shell. My backspace key and zsh vi-mode are broken on command line when i use tmux. 3004 Nov 4 2000. within an xterm, I have to type ctrl-backspace to get the backspace to work, if I just type the backspace on it's own it just prints ^H characters. It's available through the Cygwin installer. I'm seeing it now on my new Cygwin install, though it previously worked. If you hit the "BACKSPACE" key and it does not go backward it's because the terminal is probably looking for a different character based on the TERM type. Styling contours by colour and by line thickness in QGIS. Also check if the Fn key on the keyboard is not locked. So if you press ^H (that's CONTROL-H) and your key backs up but you hit the BACKSPACE key and it does not try using stty as follows: The '\' tells it that the next character is going to be a non-printable control-character and to accept it, not "interpret" it. Backspace and arrow keys not working in (how to fix)vi/vim editor in ubuntu 14.04 /linux mint. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Alternatively, just dont go full-width with your screen. How do I check if a directory exists or not in a Bash shell script? Just to chime in the new ssp changes break building ncurses, undefined references to FILE in ssp/stdio.h and ssp/whar.h. @whtyger this worked for this script. (Only after rebuilding bash): bash aborts after setting TERM to some dummy name, e.g. And what's the output of the. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The Backspace key is a popular shortcut in Chrome. Connect and share knowledge within a single location that is structured and easy to search. Login from Ubuntu and give me output of commands: 1. echo $TERM 2. stty -a, While this didn't directly help me, since TERM was correctly set, it did help identify the problem. I'd highly recommend getting Partition Magic to "sqeeze" your existing Windows partition down in preparation for this process, though. This may be unintentional; Vim sees CTRL-H as a backspace (because CTRL-H is the ASCII code for a backspace), so you also cannot map anything to that. Why does my backspace key keep being unbound from erase? I tried the following with and without a ~/.bashrc file: Pressing few chars and then a backspace seems to print a space. Note that Docker is not mentioned by the user. If the Backspace key on the virtual keyboard is not working, it indicates that you need to update the keyboard driver or get rid of the windows 10 system error, if any. Just log in to the machine and type "stty erase " (note the space after "erase") and then hit the backspace key. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. You can set this in your shell. Not sure cygwin has good terminal emulation, as far as I know, cygwin just using regular windows console which lacks terminal emulation (may be wrong). EDIT1: Also rebuilding the bash package with the updated ncurses fixes this error under Windows 8.1 as well. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). You need remove -D_FORTIFY_SOURCE=2 from CPPFLAGS in makepkg.conf file. key. Can Martian regolith be easily melted with microwaves? The space you're seeing is the space that was supposed to stomp on the previous character. How to setup a background ssh tunnel which could automatically quit with terminal/session? I do not know if this case matches every one. 1518273 Jan 19 2014 edited Jan 19 2014. Where does this (supposedly) Gibson quote come from? So guess it might need some patches to get around this. How to match a specific column position till the end of line? Please help. You can now navigate webpages in Chrome by pressing Alt + left arrow to open a previous page and Alt + right arrow to move forward. If it says "^H," then it uses the older Backspace character. In short, it is available for use when your keyboard is not available. There are also some distros that will run in . You can fix the Tab issue with the same as above. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. How to make the prompt beep with every key press/character printed? Well, in reality, this is not the reason. This should help. Bash is just the most visible of those (assuming there are more packages depending on ncurses). If the backspace was working okay initially and no longer is then try using the "reset" command. (7 Things That Will Help You! I'm running very simple script which reads line by line and prints entered line back to terminal: It works fine, but when I'm trying to edit line with backspace character it prints ^?instead of deleting character. I found this one that worked for me. By clicking Sign up for GitHub, you agree to our terms of service and I think your TERM was set to something incompatible. Never experienced your problem. You may have to edit several configuration files to tell all of the programs involved precisely what you want. Up arrow works but then the shell doesn't clean up the line with history inputs and just appends the history items to the line. One correction to the information, is of their suggestion (for XTerm): While this will get XTerm to send the right character, and change stty to have backspace as ^?, it will still erroniously report ^H as backspace under some occasions, breaking i.e. I tried to google my problem a lot but didn't find solution that works for me. Let know if my zshrc (at the bottom) is incorrect or if there are incompatible plugins or keybinds listed. Bash shell: how to reconcile portable configuration files and GUI terminal start-up types (login or interactive)? Does it do anything? Making statements based on opinion; back them up with references or personal experience. Do I need a thermal expansion tank if I already have a pressure tank? Asking for help, clarification, or responding to other answers. How do I get the directory where a Bash script is located from within the script itself? In case it helps. What video game is Charlie playing in Poker Face S01E07? I have tried all 5 options but none of them fixed the issue. To use this utility in Windows 10, perform the following steps: If your computer is facing a malware attack, the probability of it restricting the use of keyboard keys such as Backspace and Enter up to some extent is high. @elieux there are conflicts in cygwin headers, I do have the described issues as well. To learn more, see our tips on writing great answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Now, if you still use VI, sometimes the translation doesn't work and you have to actually type ^H in vi, but that's OK. and it literally would have translated 'k' into the erase/delete character.. GitHub / (fixed after rebuilding bash): editing keys don't work in CLI in bash with TERM=xterm-256color . The update for bash to version 4.4.019-1 fixed the shell history in mintty's terminal mode xterm-256color for me. You can check if there are any mappings set, and where they came from, like this: ncurses seemed like the most suspicious upgrade, so I downgraded (see instructions on how to ignore package upgrades for certain packages) through: and in the next MSYS2 instance I started, terminal codes for backspace, delete, etc., worked as intended again. rev2023.3.3.43278. E.g. Whether youre using a laptop or a PC computer, its quite annoying to have your key fail to work. To update Windows 10 / 11, you should check for Windows Update in Settings. You can put this in the shell's startup file, such as .bashrc for Bash and .zshrc for Zsh to have this set automatically when you log into the system. Have a question about this project? the following line in your .startup.tty file: stty erase "^H". 4) Reboot your computer; Windows should then reinstall your keyboard automatically. I've been trying to research this issue on Google, but did not find anything conclusive. Instead need to find why it happen. ether@jolteon MSYS /w So I'm stuck having to manually type stty erase [whatever] to fix it when I notice the backspace key is wrong. The best answers are voted up and rise to the top, Not the answer you're looking for? This simple comment is certainly the best solution I have seen to this. . Switch to the Compatibility tab and you should get these options: Now you can change the Backspace key generates: setting. So perhaps all packages depending on ncurses need re-compile? Asking for help, clarification, or responding to other answers. The Linux console keyboard layout assigns keysym Delete to keycode 14 and keysym Remove to keycode 111. To enquire how your keys are mapped: stty -a Look at the "erase =" subsection. I am using tmux to force the error since it uses an relatively uncommon terminal config. Is a PhD visitor considered as a visiting scholar? Simply run Cygwin setup again and reinstall termcap and terminfo. You may have to check the "Hide Obsolete" checkbox for term to appear in the search. @Rachel Thanks, though I found out that my problem was that the Cygwin install missed some important files (like /usr/lib/terminfo). I tried vt100. That will give you backspace capabilities in everything but emacs. vegan) just to try it, does this inconvenience the caterers and staff? Reinstalling terminfo (I couldn't find termcap) worked for me. backspace in Vim instert mode (see here: https://bugs.gentoo.org/154090). Right-click anywhere in the Cygwin window, Mitty version = 1.2-beta1 (x86_64-pc-cygwin). Today I ran pacman -Syu which upgraded the following packages (from the end of /var/log/pacman.log): After this update the arrow keys and backspace don't work correctly at the shell input line, in a weird way. Find centralized, trusted content and collaborate around the technologies you use most. Share Improve this answer Follow answered Aug 23, 2010 at 6:39 CarpeNoctem 2,407 4 23 32 Add a comment Your Answer Thanks for contributing an answer to Stack Overflow! Already on GitHub? See some explanation here https://unix.stackexchange.com/questions/131105/how-to-read-over-4k-input-without-new-lines-on-a-terminal. SSD as primary or secondary drive on a small Linux server? I was missing the terminfo entries for my terminal. (2022 Edition), Can You Use Zoom on Firestick? Just happened for me as well. The simplest fix by far. My understanding is that the shell handles stdin buffering, so shouldn't the backspace-handling be the same for both the shell and an app? Click the Options button and enable the Control + Alt + Backspace check box under Key sequence to kill the X server. So I'm stuck having to manually type stty erase [whatever] to fix it when I notice the backspace key is wrong. Is it possible to create a concave light? (Note: use Ctrl v + Backspace, do not type the ^ manually) You can fix the Tab issue with the same as above. Backspace Not Working on VS Code's Bash Terminal, How Intuit democratizes AI development across teams through reusability. If that happens, the last line of text will not be passed to the body of the loop and will not be processed. It is useful when the physical keyboard has stopped working well. The text was updated successfully, but these errors were encountered: It seems the shell is not able to move the cursor backwards, and when it tries to re-render the line, it just appends the new string instead of replacing the old one. same as cread -ignbrk brkint -inlcr -igncr icrnl -iutf8 -ixoff -iuclc -ixany imaxbel opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke, all special characters to their default values, Your shell may be set to /bin/sh instead of /bin/bash, on top of paul's answer, if you want to retain the ability to have colorful output, you can use xterm-88color. Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? Using indicator constraint with two variables, How do you get out of a corner when plotting yourself into a corner, Identify those arcade games from a 1983 Brazilian music video, Trying to understand how to get this basic Fourier Series, Redoing the align environment with a specific formatting. now copy all the files and folders that exist inside /usr/share/terminfo to the folder C:\cygwin\etc\terminfo - The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup, Announcement: AI-generated content is now permanently banned on Ask Ubuntu. You should see something like: Basically, each time you hit backspace your cursor is moved to the beginning of the text field. Note that, @roaima @Kusalananda Thanks for pointing it out that OP didn't mention. terminfo file from source host to remote host directory: Connect and share knowledge within a single location that is structured and easy to search. I noticed few missing files in msys2 filesystem package like the one that autoregenerates fstab, what was the reason this one was removed ? The older cygwin had a file /etc/terminfo/c/cygwin, but in the newer cygwin it expected the file to be /etc/terminfo/63/cygwin. This is the only thing that worked for me, especially since if you have to SSH to a server (not all fixes will work) I used to add stty erase ^? If so, how? ether@jolteon MSYS /w The reason the keys (generally) do not work out-of-the-box is partly lack of configuration (as you will see later, simply creating .inputrc/.cshrc already helps a lot) and a more difficult issue which I will try to describe below.. Copyright 2020-2023 Techtreatbox.com | All rights reserved. There is discussion here and here but it probably only gets resolved if lots of people email github support. Google has wittingly removed this shortcut, beginning from version 52. The linux console emulates a vt220 terminal which has the following key-mapping: @Alexpux any plans to downgrade ncurses soon? Ive seen a few people struggling with using the backspace key in Outlook (Exchange and Outlook.com). I did nothing special. The consent submitted will only be used for data processing originating from this website. How can this new ban on drag possibly be considered constitutional? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. How to concatenate string variables in Bash, Git is not working after macOS Update (xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools). I tried ssh from cygwin (in windows) to Debian. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. What's the difference between a power rail and a signal line? You'll see what code is sent as "erase". Thanks. When I ssh into another machine with Debian with my account(with sudo permissions), my backspace key generates some awkward symbols on pressing. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.