blocks|key|426167|text|您可以使用内置命令select来代替实现交互。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|426168|select+d+in+$(find+.+-type+d+-name+'*android*');+do
++++if+[+-n+"$d"+];+then
++++++++#+put+your+command+here
++++++++echo+"$d+selected"
++++fi
done|code-block|syntax|javascript|426169|entityMap^0|9|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Instead of implementing the interaction, you can use built-in command <code>select</code>.

<pre><code>select d in $(find . -type d -name '*android*'); do
 if [ -n "$d" ]; then
 # put your command here
 echo "$d selected"
 fi
done
</code></pre>

blocks|key|426260|text|nl打印行号：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426261|ls+%7C+grep+android+%7C+nl|code-block|syntax|javascript|426262|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

nl prints line numbers:

<pre><code>ls | grep android | nl
</code></pre>

blocks|key|426134|text|如果将结果通过管道传输到cat，则可以使用-n选项对每一行进行编号，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|426135|ls+%7C+grep+"android"+%7C+cat+-n|code-block|syntax|javascript|426136|entityMap^0|C|3|L|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

If you pipe the result into <code>cat</code>, you can use the <code>-n</code> option to number each line like so:

<pre><code>ls | grep "android" | cat -n
</code></pre>

blocks|key|426301|text|这个页面上的其他答案实际上并没有100%25回答这个问题。它们没有展示如何让用户交互地从另一个脚本中选择文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426302|以下方法将允许您执行此操作，如示例中所示。请注意，select_from_list脚本是在from+this+stackoverflow+post中提取的|offset|length|style|CODE|426303|$+ls+
android1++++++++android4++++++++android7++++++++mac2++++++++++++mac5
android2++++++++android5++++++++demo.sh+++++++++mac3++++++++++++mac6
android3++++++++android6++++++++mac1++++++++++++mac4++++++++++++mac7

$+./demo.sh
1)+android1++3)+android3++5)+android5++7)+android7
2)+android2++4)+android4++6)+android6++8)+Quit
Please+select+an+item:+3
Contents+of+file+selected+by+user:+2.3+Android+1.5+Cupcake+(API+3)|code-block|syntax|javascript|426304|下面是它用来从列表select_from_list.sh中选择项目的demo.sh和脚本|426305|demo.sh|426306|#!/usr/bin/env+bash

#+Ask+the+user+to+pick+a+file,+and+
#+cat+the+file+contents+if+they+select+a+file.
OUTPUT=$(\ls+%7C+grep+android+%7C+select_from_list.sh+%7C+xargs+cat)
STATUS=$?+

#+Check+if+user+selected+something
if+[+$STATUS+==+0+]
then
++echo+"Contents+of+file+selected+by+user:+$OUTPUT"
else
++echo+"Cancelled!"
fi|426307|select_from_list.sh|426308|#!/usr/bin/env+bash

prompt="Please+select+an+item:"

options=()

if+[+-z+"$1"+]
then
++#+Get+options+from+PIPE
++input=$(cat+/dev/stdin)
++while+read+-r+line;+do
++++options%2B=("$line")
++done+<<<+"$input"
else
++#+Get+options+from+command+line
++for+var+in+"$@"+
++do
++++options%2B=("$var")+
++done
fi

#+Close+stdin
0<&-
#+open+/dev/tty+as+stdin
exec+0</dev/tty

PS3="$prompt+"
select+opt+in+"${options[@]}"+"Quit"+;+do+
++++if+((+REPLY+==+1+%2B+${#options[@]}+))+;+then
++++++++exit+1

++++elif+((+REPLY+>+0+&&+REPLY+<=+${#options[@]}+))+;+then
++++++++break

++++else
++++++++echo+"Invalid+option.+Try+another+one."
++++fi
done++++
echo+$opt|426309|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/q/34226734/26510^0|0|P|G|19|S|0|0|0|9|J|Y|7|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@$D|16|E|17|F|G]]|9|@$D|18|E|19|1|1A]]|A|$]]|$1|H|3|I|5|J|7|1B|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1C|8|@$D|1D|E|1E|F|G]|$D|1F|E|1G|F|G]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1H|8|@]|9|@]|A|$]]|$1|Q|3|R|5|J|7|1I|8|@]|9|@]|A|$K|L]]|$1|S|3|T|5|6|7|1J|8|@]|9|@]|A|$]]|$1|U|3|V|5|J|7|1K|8|@]|9|@]|A|$K|L]]|$1|W|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13]]]]

The other answers on this page actually don't answer the question 100%. They don't show how to let the user interactively choose the file from another script.
The following approach will allow you to do this, as can be seen in the example. Note that the <code>select_from_list</code> script was pulled <a href="https://stackoverflow.com/q/34226734/26510">from this stackoverflow post</a>
<pre><code>$ ls 
android1 android4 android7 mac2 mac5
android2 android5 demo.sh mac3 mac6
android3 android6 mac1 mac4 mac7

$ ./demo.sh
1) android1 3) android3 5) android5 7) android7
2) android2 4) android4 6) android6 8) Quit
Please select an item: 3
Contents of file selected by user: 2.3 Android 1.5 Cupcake (API 3)
</code></pre>
Here's the <code>demo.sh</code> and the script it uses to select an item from a list, <code>select_from_list.sh</code>
<h2>demo.sh</h2>
<pre><code>#!/usr/bin/env bash

# Ask the user to pick a file, and 
# cat the file contents if they select a file.
OUTPUT=$(\ls | grep android | select_from_list.sh | xargs cat)
STATUS=$? 

# Check if user selected something
if [ $STATUS == 0 ]
then
 echo &quot;Contents of file selected by user: $OUTPUT&quot;
else
 echo &quot;Cancelled!&quot;
fi
</code></pre>
<h2>select_from_list.sh</h2>
<pre><code>#!/usr/bin/env bash

prompt=&quot;Please select an item:&quot;

options=()

if [ -z &quot;$1&quot; ]
then
 # Get options from PIPE
 input=$(cat /dev/stdin)
 while read -r line; do
 options+=(&quot;$line&quot;)
 done &lt;&lt;&lt; &quot;$input&quot;
else
 # Get options from command line
 for var in &quot;$@&quot; 
 do
 options+=(&quot;$var&quot;) 
 done
fi

# Close stdin
0&lt;&amp;-
# open /dev/tty as stdin
exec 0&lt;/dev/tty

PS3=&quot;$prompt &quot;
select opt in &quot;${options[@]}&quot; &quot;Quit&quot; ; do 
 if (( REPLY == 1 + ${#options[@]} )) ; then
 exit 1

 elif (( REPLY &gt; 0 &amp;&amp; REPLY &lt;= ${#options[@]} )) ; then
 break

 else
 echo &quot;Invalid option. Try another one.&quot;
 fi
done 
echo $opt
</code></pre>

blocks|key|426233|text|这对我来说很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426234|line-number=$(ls+%7C+grep+-n+"android"+%7C+cut+-d:+-f+1)|code-block|syntax|javascript|426235|我在一个脚本中使用它来删除我的sitemap.xml中我不希望Googlebot抓取的部分。我搜索URL+(它是唯一的)，然后使用上面的代码找到行号。然后，脚本使用简单的数学运算来计算删除XML文件中的整个条目所需的数字范围。|426236|我同意jweyrich关于更新你的问题以获得更好的答案。|426237|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

This works for me:

<pre><code>line-number=$(ls | grep -n "android" | cut -d: -f 1)
</code></pre>

I use this in a script to remove sections of my sitemap.xml which I don't want Googlebot to crawl. I search for the URL (which is unique) and then find the line number using the above. Using simple maths the script then calculates the range of numbers required to delete the entire entry in the XML file.

I agree with jweyrich regarding updating your question to get better answers.

I wrote a shell script like this:

<pre><code>#! /bin/sh
...
ls | grep "android"
...
</code></pre>

and the output is :

<pre><code>android1 
android2
xx_android
...
</code></pre>

I want to add a number in each file, like this:

<pre><code> 1 android1 
 2 android2
 3 XX_android
 ...
 please choose your dir number:
</code></pre>

and then wait for the user input line number x, the script reads the line number back then process the corresponding dir. How can we do this in shell ? Thanks !

How to add line number for output, prompt for line, then act based on input?

Android

我写了一个shell脚本，像这样：#! /bin/sh...ls | grep "android"...输出结果为：android1 android2xx_android...我想在每个文件中添加一个数字，如下所示：    1 android1     2 android2    3 XX_android    ...    please choose your dir number:然后等待用户

问如何为输出添加行号，提示输入行，然后根据输入操作？
EN

回答 5

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问如何为输出添加行号，提示输入行，然后根据输入操作？EN

回答 5

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问如何为输出添加行号，提示输入行，然后根据输入操作？
EN