Linux stty：标准输入：设备的 ioctl 不合适
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stty: standard input: Inappropriate ioctl for device
提问by Tree
perl script.pl --f1="t1" --f2="t2" --f3="t4" --f4 < /home/joe/a.txt
script.pl
脚本文件
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:
我收到此错误：
stty: standard input: Inappropriate ioctl for device
Password:stty: standard input: Inappropriate ioctl for device
What is this error? How do I resolve it?
这是什么错误？我该如何解决？
采纳答案by krico
I think the problem is you are reading from a redirected STDIN (because you <file.txt)
我认为问题在于您正在从重定向的 STDIN 中读取数据（因为您是 <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.
您可能应该将您的文件作为参数传递给您的脚本。
回答by NVRM
This message is painful, for users and programmers. It pollutes the STDOUT, sometimes 3 times in a row.
这个消息对于用户和程序员来说是痛苦的。它会污染 STDOUT，有时会连续 3 次。
There is no way to suppress it, even with messing with the stty -echostuff.
有没有办法抑制它，即使与搞乱stty -echo的东西。
The sole solution is to redirect all the errors to/dev/null
唯一的解决方案是将所有错误重定向到/dev/null
./myscript <<< "some stuffs" 2> /dev/null
Or similary
echo "stuffs" | ./myscript 2> /dev/null
Annoying, and thus throw away all potential errors, which is not wanted at all.
烦人，因此扔掉所有潜在的错误，这是根本不想要的。
not wanted at all.
