blocks|key|5251475|text|您应该使用==而不是=进行比较，如果您的代码用于整数比较，请随时使用-eq。例如,|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5251476|if+[+$FLAG+-eq+1+];then|code-block|syntax|javascript|5251477|对于字符串，您可以使用=，例如NOTE+:按照Athos爵士的指示进行编辑|BOLD|5251478|if+[+"$Year1"+=+"$Year2"+]+&&+[+"$Month1"+=+"$Month2"+];+then|5251479|或者，如果要将变量与字符串进行比较，也可以使用==，|5251480|if+[+"$STA"+==+"Completed"+];then|5251481|添加测试脚本以进一步阐明：|5251482|-bash-4.2$+cat+string.sh
#!/bin/bash+-x

str1="Hello+There"
str2="Hello+There"

if+[+"$str1"+=+"$str2"+];then
++++++++echo+"Matched"
else
++++++++echo+"Not+Matched"
fi

if+[+"$str1"+==+"Hello+There"+];then
++++++++echo+"Matched"
else
++++++++echo+"Not+Matched"
fi

-bash-4.2$+./string.sh+
%2B+str1='Hello+There'
%2B+str2='Hello+There'
%2B+'['+'Hello+There'+=+'Hello+There'+']'
%2B+echo+Matched
Matched
%2B+'['+'Hello+There'+==+'Hello+There'+']'
%2B+echo+Matched
Matched
-bash-4.2$+|5251483|entityMap^0|5|2|A|1|Y|3|0|0|B|1|F|D|0|0|N|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|17|8|@$9|18|A|19|B|C]|$9|1A|A|1B|B|M]]|D|@]|E|$]]|$1|N|3|O|5|H|7|1C|8|@]|D|@]|E|$I|J]]|$1|P|3|Q|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|R|3|S|5|H|7|1G|8|@]|D|@]|E|$I|J]]|$1|T|3|U|5|6|7|1H|8|@]|D|@]|E|$]]|$1|V|3|W|5|H|7|1I|8|@]|D|@]|E|$I|J]]|$1|X|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|Y|$]]

You should use <code>==</code> for comparisons instead of <code>=</code> and also please use <code>-eq</code> whenever you want to use <code>==</code> if your code is for integer comparison. For example,
<pre><code>if [ $FLAG -eq 1 ];then
</code></pre>
For strings, you can use <code>=</code>, like for example NOTE : Edited as pointed by Sir Athos
<pre><code>if [ &quot;$Year1&quot; = &quot;$Year2&quot; ] &amp;&amp; [ &quot;$Month1&quot; = &quot;$Month2&quot; ]; then
</code></pre>
or if you are comparing variable with string then, you can also use <code>==</code>,
<pre><code>if [ &quot;$STA&quot; == &quot;Completed&quot; ];then
</code></pre>
Adding test script to further clarify :
<pre><code>-bash-4.2$ cat string.sh
#!/bin/bash -x

str1=&quot;Hello There&quot;
str2=&quot;Hello There&quot;

if [ &quot;$str1&quot; = &quot;$str2&quot; ];then
 echo &quot;Matched&quot;
else
 echo &quot;Not Matched&quot;
fi

if [ &quot;$str1&quot; == &quot;Hello There&quot; ];then
 echo &quot;Matched&quot;
else
 echo &quot;Not Matched&quot;
fi

-bash-4.2$ ./string.sh 
+ str1='Hello There'
+ str2='Hello There'
+ '[' 'Hello There' = 'Hello There' ']'
+ echo Matched
Matched
+ '[' 'Hello There' == 'Hello There' ']'
+ echo Matched
Matched
-bash-4.2$ 
</code></pre>

blocks|key|2680424|text|while+[+"$k"+=+0+];+do+if+[[+$Year1+==+$Year2+&&+$Month1+==+$Month2+]];+then+echo+"abcd";+else+echo+"erty";+fi;+done|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2680425|Helpfull可以是：https://www.shellcheck.net|unstyled|offset|length|2680426|entityMap|0|LINK|mutability|MUTABLE|url|https://www.shellcheck.net/^0|0|C|Q|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>while [ &quot;$k&quot; = 0 ]; do if [[ $Year1 == $Year2 &amp;&amp; $Month1 == $Month2 ]]; then echo &quot;abcd&quot;; else echo &quot;erty&quot;; fi; done
</code></pre>
Helpfull could be: <a href="https://www.shellcheck.net" rel="nofollow noreferrer">https://www.shellcheck.net</a>

blocks|key|81318|text|您的变量中至少有一个包含意外数据(例如，为空、包含空格或换行符)，从而导致[命令无法接收预期的参数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|81319|总是引用你的变量("$Year1"而不是$Year1)，以避免像这样的意外。|81320|entityMap^0|11|1|0|9|8|K|6|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

At least one of your variables contains unexpected data (e.g. is empty, or has spaces or new line characters), causing the <code>[</code> command to not receive the arguments it expects.
Always quote your variables (<code>&quot;$Year1&quot;</code> instead of <code>$Year1</code>) to avoid surprises like this one.

I have a code similar to below:
<pre><code>while [ $k = 0 ];
do
if [ $Year1 = $Year2 ] &amp;&amp; [ $Month1 = $Month2 ]; then
 echo &quot;abcd&quot;
else
 echo&quot;erty&quot;
</code></pre>
The error is line highlighted line &gt; line 144]: [: argument expected

i am getting [: argument excepted in unix command

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个类似于下面的代码：while [ $k = 0 ];doif [ $Year1 = $Year2 ] && [  $Month1 = $Month2 ]; then  echo "abcd"else  echo"erty"错误为行突出显示的行>第144行]：[：预期的参数

问我在unix命令中得到[：argument excepted
EN

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问我在unix命令中得到[：argument exceptedEN