Question

我很想用Line 2: ambiguous redirect and Line 14: unary operator expected.编写代码。

这是我的代码：

JSONObject json = new JSONObject(response.body().toString());   
Log.i(LOG_TAG, json.getString("axe1"));

这是我的错误：

using Akka;
using Akka.Actor;
using Akka.TestKit;
using Akka.TestKit.Xunit;
using System.Diagnostics;
using Xunit;

class MyFsm : FSM<MyFsm.State, MyFsm.Data>
{
    public MyFsm()
    {
        StartWith(State.Idle, new Data());

        When(State.Idle, state =>
        {
            var eventWasHandled = state.FsmEvent.Match()
                .With<MessageA>(message => { return; })
                .WasHandled;

            if (eventWasHandled)
            {
                Debug.WriteLine($"{State.Idle} => transitioning to {State.Busy}");
                return GoTo(State.Busy);
            }
            else
            {
                Debug.WriteLine($"{State.Idle} => returning null");
                return null;
            }
        });

        When(State.Busy, state =>
        {
            var eventWasHandled = state.FsmEvent.Match()
                .With<MessageB>(message => { return; })
                .WasHandled;

            if (eventWasHandled)
            {
                Debug.WriteLine($"{State.Busy} => transitioning to {State.Done}");
                return GoTo(State.Done);
            }
            else
            {
                Debug.WriteLine($"{State.Busy} => returning null");
                return null;
            }
        });

        Initialize();
    }

    public enum State { Idle, Busy, Done }

    public class Data { }
}

class MessageA { }

class MessageB { }

public class MyFsmTests : TestKit
{
    [Fact]
    public void Its_initial_state_is_Idle()
    {
        var myFsm = new TestFSMRef<MyFsm, MyFsm.State, MyFsm.Data>(Sys, Props.Create<MyFsm>());

        Assert.Equal(MyFsm.State.Idle, myFsm.StateName);
    }

    [Fact]
    public void It_transitions_to_the_Busy_state_after_receiving_MessageA()
    {
        var myFsm = new TestFSMRef<MyFsm, MyFsm.State, MyFsm.Data>(Sys, Props.Create<MyFsm>());
        myFsm.SetState(MyFsm.State.Idle);

        myFsm.Tell(new MessageA());

        Assert.Equal(MyFsm.State.Busy, myFsm.StateName);
    }

    [Fact]
    public void It_transitions_to_the_Done_state_after_receiving_MessageB_using_SetState()
    {
        var myFsm = new TestFSMRef<MyFsm, MyFsm.State, MyFsm.Data>(Sys, Props.Create<MyFsm>());
        myFsm.SetState(MyFsm.State.Busy);

        myFsm.Tell(new MessageB());

        Assert.Equal(MyFsm.State.Done, myFsm.StateName);
    }

    [Fact]
    public void It_transitions_to_the_Done_state_after_receiving_MessageB_without_using_SetState()
    {
        var myFsm = new TestFSMRef<MyFsm, MyFsm.State, MyFsm.Data>(Sys, Props.Create<MyFsm>());

        myFsm.Tell(new MessageA());
        myFsm.Tell(new MessageB());

        Assert.Equal(MyFsm.State.Done, myFsm.StateName);
    }
}

有人能帮助我理解为什么会出现这个错误吗？

Answer 1

正如@GlennJackman指出的那样，这些行与代码不匹配，因此我猜测如下：

模糊的重定向在第6行：要截断文件，你应该使用truncate -s0 $2
对于一元操作员错误，我在第21行打赌：要么换了一个换行符或;

fi

尝试以下方法：

#!/bin/bash
echo -n "Output to $2 "
# set counter
count=1
# zap output file
truncate -s0 $2
# Loop
while [ $count -le $1 ]
do
    # generate some random text
    randomnumber=`od -A n -t d -N 1 /dev/urandom`
    randomtext=`cat /dev/urandom | tr -cd "[:alnum:]" | head -c $randomnumber`
    # generate a random number
    randomnumber=`od -A n -t d -N 1 /dev/urandom`
    # output to file
    echo "$count,$randomtext,$randomnumber" | sed -e "s: *::g" >> $2
    # increment counter
    count=$(($count + 1))
    if [ $(($count % 500)) -eq 0 ]
    then
        echo -n "."
    fi
done
echo " Output complete"

Bash Shell脚本错误：预期模糊重定向和一元运算符

1 个答案: