I don't have access to MacOS, I'm amazed the most recent releases ship with a 12 year old shell (whats going on there). Checking the exit status of read after the stty command appears to work OK in bash 4.4.12 and 5.0.7
I found the redirect of stderr necessary because cygwin sometimes reports read: read error: 0: Resource temporarily unavailable, but I never caught it not flushing all the input.
This User Gave Thanks to Chubler_XL For This Post:
I am trying to create a shell (ksh) which has two "read" commands, one which reads a line from a file and another which is inside a loop that reads user input from a keyboard. However, the "read" command inside the loop uses the input from the file and it does not get the user input from keyboard.... (3 Replies)
Hello all,
How can i have a user input that reads like this:
echo -n "Please enter a & b:" 10 20
read a
read b
echo $a
echo $b
10
20
right now i have divided it into two echos, like
echo -n "a: "
echo -n "b: " (1 Reply)
I'm trying to set up a script that takes user input and validates that the user input was entered correctly.
So far I have this:
while :
do
echo "Please enter your name."
read NAME
if
then
echo "You have not entered a name."
echo... (13 Replies)
If I want all user input to start with " : " if not display error
or what I asking is how to do if statement that control a first letter of string that we want to start with. and not worry about the rest
Thank (1 Reply)
Hi,
echo "Enter file name of input file list along with absolute path : "
read inputFileList
if
then
for string in `cat inputFileList`
do
echo $string
done
else
echo " file does not exist"
fi
From the above code, if the user enters a invalid file... (1 Reply)
i have a script which takes input from user, if user gives either Y/y then it should continue, else it should quit by displaying user cancelled.
#!/bin/sh
echo " Enter your choice to continue y/Y OR n/N to quit "
read A
if
then
echo " user requested to continue "
##some commands... (7 Replies)
$Input_filename=$ARGV;
if (!-d $Input_filename && ! -e $Input_filename)
{
print "USAGE: Please enter '$ABCD/def/dsed.txt' as an arguement \n";
exit;
}
1. Input Is suppose to be something like "$ABCD/def/dsed.txt".
if the input is wrong the script should throw an ERROR message.... (2 Replies)
Why does removing "rhgb quiet" from the kernel boot parameters control whether or not the commands I enter are displayed in single user mode ?
For instance, if I do not remove "rhgb quiet", when I am in single user mode, whatever command I type will not be displayed on the screen.
The... (0 Replies)
I am trying to allow a user to enter in text and then store that text in a variable $gene to run in an awk command in which those values are used to run some calculations. I am getting syntax errors however, when I try. Thank you :).
The awk runs great if it is a pre-defined file that is used,... (7 Replies)
Discussion started by: cmccabe
7 Replies
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gtty
stty(2) System Calls Manual stty(2)NAME
stty(), gtty() - control terminal device (Bell Version 6 compatibility)
SYNOPSIS
Remarks
These system calls are preserved for backward compatibility with Bell Version 6. They provide as close an approximation as possible to the
old Version 6 functions. All new code should use the and calls described in termio(7).
DESCRIPTION
For certain status settings and status inquiries about terminal devices, the functions and are equivalent to
and
respectively (see ioctl(2) and termio(7).
RETURN VALUE
and return the following values:
Successful completion.
Failure.
is set to indicate the error.
ERRORS
If or fails, is set to one of the following values:
[EBADF] is not a valid file descriptor.
[EFAULT] points to an invalid address.
WARNINGS
Obsolescent Interfaces
and are to be obsoleted at a future date.
SEE ALSO stty(1), exec(2), ioctl(2), sttyV6(7), termio(7), tty(7).
TO BE OBSOLETED stty(2)