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)
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)
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)
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)
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)
Hi
I am working on SunOS 5.10 from remote terminal using putty.
Also
echo $TERM
xterm
In vi editor when in insert mode arrow keys are not working for cursor movement instead they print A B C and D.
Please help.
thanks
ravs (7 Replies)
I recently needed to collect arrow keys (and function keys etc.) in a shell script so that I could run a text graphics-style data entry system (with text entry fields, drop-down list boxes, progress bars and the like). Yes you can do all this in shell, and portably too if you're careful.
I've... (4 Replies)
hello everybody,
as many, I have a problem with a script...
I wrote a shell script in which I want to read a variable value. the problem is that I can't use the arrow keys.
Here is the script I use :
#!/bin/bash
stty erase ^H
read foune
echo "$foune"
exit 0;
the problem is... (2 Replies)
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)
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=$'\002'
But it does... (2 Replies)
Discussion started by: alex_5161
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)