Sponsored Content
Top Forums Shell Programming and Scripting Read a multiline text from a console - supporting arrow keys Post 302715797 by Corona688 on Monday 15th of October 2012 12:00:27 PM
Old 10-15-2012
What's your system? What's your shell? In BASH, you can use read -e to read lines using readline mode, which lets you edit with left-right keys, but that still doesn't support multiple lines. If you really need deluxe input maybe you should just fire up a text editor for them. nano for instance can be used in restricted mode to prevent them from changing to different files, etc.

Last edited by Corona688; 10-15-2012 at 01:09 PM..
This User Gave Thanks to Corona688 For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Trapping Arrow keys

Hey Guys , How do we trap the arrow keys in shell programming. Or atleast can we read the ascii code of the arrow keys. I want to read the arrow keys pressed by the user and accordingly highlight the corresponding menu option. Is it possible in shell to do so ?? ... (1 Reply)
Discussion started by: nageshrc
1 Replies

2. UNIX for Dummies Questions & Answers

arrow keys / special keys

how to use the arrow keys in shell scripting. is there any special synatax / command for this. i just want to use the arrow keys for navigation. replies appreciated raguram R (3 Replies)
Discussion started by: raguramtgr
3 Replies

3. Shell Programming and Scripting

How to read arrow keys on really old bash?

I would like to get a script to respond to arrow key presses to scroll up and down a menu. The platform is CDLinux which uses a prehistoric version of bash, version 1.14.7. I would like to do something like "read -sn 1 keyin" but the "read" command is so primative that it only has the -r... (1 Reply)
Discussion started by: simonb
1 Replies

4. Solaris

Using arrow keys

Hello, I am unable to use the arrow keys in some applications. For example, in bash, I am able to use the arrow keys to to go back and forth characters in current line and search the history--I can do everything you'd expect to be able to do with the arrow keys. However, in bc, I cannot use... (4 Replies)
Discussion started by: cooldude
4 Replies

5. UNIX and Linux Applications

command scrolling using arrow keys

hi, can anyone tell me how to enable arrow keys to scroll thru the commands on command prompt. I am using C shell ( I know, in k shell, set -o vi would enable vi command history, but set -o doesnte exist in c shell) (4 Replies)
Discussion started by: hemangi13
4 Replies

6. UNIX for Dummies Questions & Answers

SunOS 5.10 - VI Arrow keys not working

Hi I am working on SunOS 5.10 from remote terminal using putty. Also echo $TERM xterm In vi editor when in insert mode arrow keys are not working for cursor movement instead they print A B C and D. Please help. thanks ravs (7 Replies)
Discussion started by: ravashingravi
7 Replies

7. Shell Programming and Scripting

Using arrow keys in shell scripts

I recently needed to collect arrow keys (and function keys etc.) in a shell script so that I could run a text graphics-style data entry system (with text entry fields, drop-down list boxes, progress bars and the like). Yes you can do all this in shell, and portably too if you're careful. I've... (4 Replies)
Discussion started by: cambridge
4 Replies

8. Shell Programming and Scripting

problem using arrow keys in bash shell

hello everybody, as many, I have a problem with a script... I wrote a shell script in which I want to read a variable value. the problem is that I can't use the arrow keys. Here is the script I use : #!/bin/bash stty erase ^H read foune echo "$foune" exit 0; the problem is... (2 Replies)
Discussion started by: Moumou
2 Replies

9. UNIX for Dummies Questions & Answers

Tux-HJKL as arrow keys

I would like to configure the key combination Tux-J (Win-J) as Down Arrow, and the rest of the VIM-style movement keys as well (HKL). What is the best way to do this so that it will work in all applications? I thought about editing the keyboard layout but I'm not sure how to do that for Tux-key... (2 Replies)
Discussion started by: dotancohen
2 Replies

10. UNIX for Dummies Questions & Answers

Arrow keys binding in AIX v5.3 - how?

Would somebody advise how arrow keys could be binded in AIX v5.3? I could not find reasonable information online related to AIX. I've meat advises to define: alias __A=$'\020' # or the same: alias __A=$(echo "\020") alias __B=$'\016' alias __C=$'\006' alias __D=$'\002' But it does... (2 Replies)
Discussion started by: alex_5161
2 Replies
NANO(1) 						      General Commands Manual							   NANO(1)

NAME
nano - Nano's ANOther editor, an enhanced free Pico clone SYNOPSIS
nano [OPTIONS] [[+LINE,COLUMN] FILE]... DESCRIPTION
This manual page briefly documents the nano command. nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than just copying Pico's look and feel, nano also implements some missing (or disabled by default) features in Pico, such as "search and replace" and "go to line and column number". OPTIONS
+LINE,COLUMN Places cursor at line number LINE and column number COLUMN (at least one of which must be specified) on startup, instead of the default of line 1, column 1. -? Same as -h (--help). -A (--smarthome) Make the Home key smarter. When Home is pressed anywhere but at the very beginning of non-whitespace characters on a line, the cur- sor will jump to that beginning (either forwards or backwards). If the cursor is already at that position, it will jump to the true beginning of the line. -B (--backup) When saving a file, back up the previous version of it to the current filename suffixed with a ~. -C dir (--backupdir=dir) Set the directory where nano puts unique backup files if file backups are enabled. -D (--boldtext) Use bold text instead of reverse video text. -E (--tabstospaces) Convert typed tabs to spaces. -F (--multibuffer) Enable multiple file buffers, if available. -H (--historylog) Log search and replace strings to ~/.nano_history, so they can be retrieved in later sessions, if nanorc support is available. -I (--ignorercfiles) Don't look at SYSCONFDIR/nanorc or ~/.nanorc, if nanorc support is available. -K (--rebindkeypad) Interpret the numeric keypad keys so that they all work properly. You should only need to use this option if they don't, as mouse support won't work properly with this option enabled. -L (--nonewlines) Don't add newlines to the ends of files. -N (--noconvert) Disable automatic conversion of files from DOS/Mac format. -O (--morespace) Use the blank line below the titlebar as extra editing space. -Q str (--quotestr=str) Set the quoting string for justifying. The default is "^([ ]*[#:>|}])+" if extended regular expression support is available, or "> " otherwise. Note that stands for a Tab. -R (--restricted) Restricted mode: don't read or write to any file not specified on the command line; read any nanorc files; allow suspending; allow a file to be appended to, prepended to, or saved under a different name if it already has one; or use backup files or spell checking. Also accessible by invoking nano with any name beginning with 'r' (e.g. "rnano"). -S (--smooth) Enable smooth scrolling. Text will scroll line-by-line, instead of the usual chunk-by-chunk behavior. -T cols (--tabsize=cols) Set the size (width) of a tab to cols columns. The value of cols must be greater than 0. The default value is 8. -U (--quickblank) Do quick statusbar blanking. Statusbar messages will disappear after 1 keystroke instead of 25. Note that -c overrides this. -V (--version) Show the current version number and exit. -W (--wordbounds) Detect word boundaries more accurately by treating punctuation characters as part of a word. -Y str (--syntax=str) Specify a specific syntax highlighting from the nanorc to use, if available. -c (--const) Constantly show the cursor position. Note that this overrides -U. -d (--rebinddelete) Interpret the Delete key differently so that both Backspace and Delete work properly. You should only need to use this option if Backspace acts like Delete on your system. -h (--help) Show a summary of command line options and exit. -i (--autoindent) Indent new lines to the previous line's indentation. Useful when editing source code. -k (--cut) Enable cut from cursor to end of line. -l (--nofollow) If the file being edited is a symbolic link, replace the link with a new file instead of following it. Good for editing files in /tmp, perhaps? -m (--mouse) Enable mouse support, if available for your system. When enabled, mouse clicks can be used to place the cursor, set the mark (with a double click), and execute shortcuts. The mouse will work in the X Window System, and on the console when gpm is running. -o dir (--operatingdir=dir) Set operating directory. Makes nano set up something similar to a chroot. -p (--preserve) Preserve the XON and XOFF sequences (^Q and ^S) so they will be caught by the terminal. -r cols (--fill=cols) Wrap lines at column cols. If this value is 0 or less, wrapping will occur at the width of the screen less cols columns, allowing the wrap point to vary along with the width of the screen if the screen is resized. The default value is -8. -s prog (--speller=prog) Enable alternative spell checker command. -t (--tempfile) Always save changed buffer without prompting. Same as Pico's -t option. -v (--view) View file (read only) mode. -w (--nowrap) Disable wrapping of long lines. -x (--nohelp) Disable help screen at bottom of editor. -z (--suspend) Enable suspend ability. -a, -b, -e, -f, -g, -j Ignored, for compatibility with Pico. INITIALIZATION FILE
nano will read initialization files in the following order: SYSCONFDIR/nanorc, then ~/.nanorc. Please see nanorc(5) and the example file nanorc.sample, both of which should be provided with nano. NOTES
If no alternative spell checker command is specified on the command line or in one of the nanorc files, nano will check the SPELL environ- ment variable for one. In some cases nano will try to dump the buffer into an emergency file. This will happen mainly if nano receives a SIGHUP or SIGTERM or runs out of memory. It will write the buffer into a file named nano.save if the buffer didn't have a name already, or will add a ".save" suffix to the current filename. If an emergency file with that name already exists in the current directory, it will add ".save" plus a number (e.g. ".save.1") to the current filename in order to make it unique. In multibuffer mode, nano will write all the open buffers to their respective emergency files. BUGS
Please send any comments or bug reports to nano@nano-editor.org. The nano mailing list is available from nano-devel@gnu.org. To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe". HOMEPAGE
http://www.nano-editor.org/ SEE ALSO
nanorc(5) /usr/share/doc/nano/ (or equivalent on your system) AUTHOR
Chris Allegretta <chrisa@asty.org>, et al (see AUTHORS and THANKS for details). This manual page was originally written by Jordi Mallach <jordi@gnu.org>, for the Debian system (but may be used by others). October 28, 2006 version 2.0.0 NANO(1)
All times are GMT -4. The time now is 04:29 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy