Final answer:
To suppress the 'stty: 'standard input': Inappropriate ioctl for device' error, redirect stty commands to /dev/null or check if the script is being run interactively. The error commonly occurs in non-interactive environments.
Step-by-step explanation:
The 'stty: 'standard input': Inappropriate ioctl for device' error usually occurs when a script that is meant to be run in an interactive shell is run in a non-interactive environment, such as a cron job or a script executed by an automated process. To suppress this error, you can redirect the stty commands to /dev/null, or you can check if the script is being run interactively by checking if /dev/tty exists or by using the [-t 1] conditional expression to test if the stdout is a terminal.
For example, to suppress the error, you can modify the stty commands like so:
stty <some stty command> 2>/dev/null
Or, in a script, you can test if the output is a terminal before executing stty:
if [ -t 1 ]; then
stty <some stty command>
fi
Note that the adjustments you make will depend on the specific context and commands in your script.
To suppress the 'stty: 'standard input': Inappropriate ioctl for device' error, you can redirect the standard input for the 'stty' command from the keyboard to a file. This can be achieved by using the '<' symbol followed by the file name.
For example, if you want to suppress the error while running the command 'stty -echo', you can use the command 'stty -echo < input.txt', where 'input.txt' is an empty file. This way, the 'stty' command will consider the file as the input instead of the keyboard and the error will be suppressed.