在用Perl IPC :: open2打开的shell进程中不能’cleartool setvie

如果我在运行Perl脚本之前手动设置到视图中,它似乎正常工作(cleartool子命令,如pwv工作).但是,当我在脚本中运行$ct setview anassar_ $proj时,它会显示以下错误消息：

stty: standard input: Invalid argument

我不知道有什么限制禁止运行ct setview通过管道它到shell进程.有帮助吗？

my ( $readme,$writeme );
# Open the default shell and hook to its stdin and stdout.
my $pid = open2( $readme,$writeme,"$ENV{SHELL}" ) or
   croak "Cannot open IPC handles to $ENV{SHELL}n";


runCmd("$ct pwv");
runCmd("$ct setview anassar_$proj");
runCmd("$ct pwv");
runCmd('source  /vobs/blah/blah/blah/env.csh');
runCmd('echo env_var1 = $env_var1');
runCmd('echo env_var2 = $env_var2');
runCmd('echo env_var3 = $env_var3');
runCmd('exit'); # Exit from ClearCase View
runCmd('exit'); # Exit from shell.


sub runCmd {
    my ( $cmd ) = @_;
    my $sentinel = '___SOME_STRING_THAT_CANNOT_OCCUR_IN_OUTPUT___';

    print $writeme "$cmd && echo $sentineln";

    while ( my $output = <$readme> ) {
        last if ( $output =~ /$sentinel/ );
        print $output;
    }
}