stty: standard input: Inappropriate ioctl for device
bash, linux, perl
Solution
I think the problem is you are reading from a redirected STDIN (because you <file.txt)
$ perl -e 'system("stty -echo");' </tmp/foo
stty: standard input: Inappropriate ioctl for device
You should probably pass your file as a parameter to your script.
Problem
``` perl script.pl --f1="t1" --f2="t2" --f3="t4" --f4 < /home/joe/a.txt ``` script.pl ``` use Getopt::Long; my ($f1, $f2, $f3, $f4) ; GetOptions ( 'f1=s' => \$f1, 'f2=s' => \$f2, 'f3=s' => \$f3, 'f4' => \$f4, ); if ($f1) { system('stty -echo'); print "Password:"; $pwd = <STDIN>; system('stty echo'); } ``` I got this error: ``` stty: standard input: Inappropriate ioctl for device Password:stty: standard input: Inappropriate ioctl for device ``` What is this error? How do I resolve it?