This is not real easy, especially if you want a lot of editing features. I don't think it's really worth the trouble. But here is a start..
Code:
#! /usr/local/bin/bash
exec 4>/dev/tty
function readnum
{
local prompt=$1
local init=$2
local backspace=$(echo -e \\b\\c)
local enter=$(echo -e \\r\\c)
local savesetting=$(stty -g)
local keystroke data n i rest reading result
n=0
while (( ${#init})) ; do
rest=${init#?}
data[n]=${init%$rest}
init=$rest
((n=n+1))
done
echo -e "${prompt}"\\c >&4
while ((i<n)) ; do
echo -e ${data[i]}\\c >&4
((i=i+1))
done
stty -echo -icrnl -icanon min 1 time 0
reading=1
while ((reading)) ; do
keystroke=$(dd bs=1 count=1 2>/dev/null)
case $keystroke in
$enter)
reading=0
;;
$backspace)
if ((n)) ; then
echo -e "${backspace} ${backspace}"\\c >&4
((n=n-1))
fi
;;
*)
echo -e ${keystroke}\\c >&4
data[n]=$keystroke
((n=n+1))
esac
done
stty "$savesetting"
echo >&4
result=""
i=0
while ((i<n)) ; do
result="${result}${data[i]}"
((i=i+1))
done
echo $result
return 0
}
final=$(readnum "well? " 0123)
echo the final number is $final
exit 0
can somebody help me out in editing the /etc/fstab. I am on RHEL5 (Tikanga).
**The problem is that i have given a wrong LABEL in /etc/fstab for root volume and so after reboot, it is unable to resolve the wrong LABEL;
so, i have to edit the /etc/fstab :-(
-ilan (3 Replies)
Hello friends,
I want to add some features to the bash shell.I logged in as the root.Even then could not view the source code of bash shell in RH 9,Fedora 8.It is in encrypted form.Can you please tell me how to include my code into bash shell.
Please give me a sample code so that I can understand... (3 Replies)
Hello
There is a > prompt at Grub, # prompt for the console and $ for bash, but I am clueless about when and how to get into a specific prompt, how to move around between one prompt to another and how to exit.
Is there a very basic guide anywhere that CLEARLY explains the type of shell... (2 Replies)
Hi all,
I would like to simply read a file which lists a number of pathnames and files, then search and replace key strings using a few vi commands:
:1,$s/search_str/replace_str/g<return>
but I am not sure how to automate the <return> of these vis commands when I am putting this in a... (8 Replies)
I' trying to use bash to edit a csv file from this format:
"apples","oranges","grapes"
"bread","butter","milk"
To this:
"apples
oranges
grapes"
So that if I would open the csv file in open office,
"apples
oranges
grapes"
Would be in one single cell, and
"bread (2 Replies)
Hi
I am new to writing script and want to use a Bash Piped while-read and read from user input.
if something happens on server.log then do while loop or if something happend on user input then do while loop.
Pseudocode something like:
tail -n 3 -f server.log | while read serverline || read... (8 Replies)
so assume I have a dozen files in local directory and half of them are .txt and I only want to scan these text files and go inside each of them and replace absolute paths (e.g. C:\blabla\more blahblah\myfile.txt) with just the name of that file (myfile.txt) and then go to next line and look if... (6 Replies)
Hi.
How can I create a history function? (By "read" command or so)
&
How can I configure a read command so that the arrow keys are not displayed so funny? (^[[A)
Thanks in advance. (4 Replies)
Heyas
So while i'm trying to increase security/usability of my TUI commands, i'm currently at tui-conf-get.
There was also a bug, i wanted to fix, but sadly that bugfix is more insecure - but twice as fast as my current buggy method.
I've added a getopts toggle, '-s' to toggle beSecure,... (8 Replies)
Hi,
I am attempting to assign the output of the following command, to two bash variables, var1 and var2 using "read," but it doesn't seem to be working.
# openstack hypervisor stats show | awk -F'|' 'NR==14{print $2,$3}'
vcpus 92
# echo $?
0
# openstack hypervisor... (4 Replies)
Discussion started by: sand1234
4 Replies
LEARN ABOUT SUNOS
echo
echo(3XCURSES) X/Open Curses Library Functions echo(3XCURSES)NAME
echo, noecho - enable/disable terminal echo
SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib
-R /usr/xpg4/lib -lcurses [ library... ]
c89 [ flag... ] file... -lcurses [ library... ]
#include <curses.h>
int echo(void);
int noecho(void);
DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft-
ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.
RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)SunOS 5.10 5 Jun 2002 echo(3XCURSES)