blocks|key|2282120|text|sed+-i.old+'1s;%5E;to+be+prepended;'+inFile|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2282121|unstyled|2282122|-i将更改写在适当的位置，并在给定任何扩展时进行备份。(在本例中，.old)|unordered-list-item|offset|length|style|CODE|2282123|1s;%5E;to+be+prepended;使用;作为命令分隔符，用给定的替换字符串替换第一行的开头。|2282124|2282125|entityMap^0|0|0|0|2|X|4|0|0|L|N|1|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@$I|U|J|V|K|L]|$I|W|J|X|K|L]]|9|@]|A|$]]|$1|M|3|N|5|H|7|Y|8|@$I|Z|J|10|K|L]|$I|11|J|12|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|E|7|13|8|@]|9|@]|A|$]]|$1|P|3|-4|5|E|7|14|8|@]|9|@]|A|$]]]|Q|$]]

<pre><code>sed -i.old '1s;^;to be prepended;' inFile
</code></pre>

<ul>
<li><code>-i</code> writes the change in place and take a backup if any extension is given. (In this case, <code>.old</code>)</li>
<li><code>1s;^;to be prepended;</code> substitutes the beginning of the first line by the given replacement string, using <code>;</code> as a command delimiter.</li>
</ul>

blocks|key|2282146|text|printf+'%25s\n%25s\n'+"to+be+prepended"+"$(cat+text.txt)"+>text.txt|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2282147|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>printf '%s\n%s\n' "to be prepended" "$(cat text.txt)" &gt;text.txt
</code></pre>

blocks|key|643691|text|进程替换|type|unstyled|depth|inlineStyleRanges|entityRanges|data|643692|我很惊讶没有人提到这一点。|643693|cat+<(echo+"before")+text.txt+>+newfile.txt|code-block|syntax|javascript|643694|这可以说比公认的答案更自然(打印一些东西并将其转换为替换命令在字典序上是违反直觉的)。|643695|...and劫持瑞安上面所说的，使用sponge你不需要临时文件：|offset|length|style|CODE|643696|sudo+apt-get+install+moreutils
<<(echo+"to+be+prepended")+<+text.txt+%7C+sponge+text.txt|643697|编辑:看起来这在Bourne+Shell+/bin/sh中不起作用|643698|643699|此处字符串(仅限zsh)|643700|使用here-string+-+<<<，您可以执行以下操作：|643701|<<<+"to+be+prepended"+<+text.txt+%7C+sponge+text.txt|643702|entityMap^0|0|0|0|0|I|6|0|0|L|7|0|0|0|G|3|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|14|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|15|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|17|8|@$M|18|N|19|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|1B|8|@$M|1C|N|1D|O|P]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1F|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1G|8|@$M|1H|N|1I|O|P]]|9|@]|A|$]]|$1|Z|3|10|5|F|7|1J|8|@]|9|@]|A|$G|H]]|$1|11|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|12|$]]

<h1>Process Substitution</h1>

I'm surprised no one mentioned this.

<pre><code>cat &lt;(echo "before") text.txt &gt; newfile.txt
</code></pre>

which is arguably more natural than the accepted answer (printing something and piping it into a substitution command is lexicographically counter-intuitive).

...and hijacking what ryan said above, with <code>sponge</code> you don't need a temporary file:

<pre><code>sudo apt-get install moreutils
&lt;&lt;(echo "to be prepended") &lt; text.txt | sponge text.txt
</code></pre>

EDIT: Looks like this doesn't work in Bourne Shell <code>/bin/sh</code>

<hr>

<h1>Here String (zsh only)</h1>

Using a here-string - <code>&lt;&lt;&lt;</code>, you can do:

<pre><code>&lt;&lt;&lt; "to be prepended" &lt; text.txt | sponge text.txt
</code></pre>

blocks|key|2282028|text|这是一种可能性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2282029|(echo+"to+be+prepended";+cat+text.txt)+>+newfile.txt|code-block|syntax|javascript|2282030|您可能不容易绕过中间文件。|2282031|替代方案(使用shell转义可能会很麻烦)：|2282032|sed+-i+'0,/%5E/s//to+be+prepended/'+text.txt|2282033|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This is one possibility:

<pre><code>(echo "to be prepended"; cat text.txt) &gt; newfile.txt
</code></pre>

you'll probably not easily get around an intermediate file.

Alternatives (can be cumbersome with shell escaping):

<pre><code>sed -i '0,/^/s//to be prepended/' text.txt
</code></pre>

blocks|key|1374904|text|这将用于形成输出。-表示标准输入，通过echo中的管道提供。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374905|echo+-e+"to+be+prepended+\n+another+line"+%7C+cat+-+text.txt|code-block|syntax|javascript|1374906|要重写文件，需要一个临时文件，因为它不能通过管道返回到输入文件。|1374907|echo+"to+be+prepended"+%7C+cat+-+text.txt+>+text.txt.tmp
mv+text.txt.tmp+text.txt|1374908|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

This will work to form the output. The - means standard input, which is provide via the pipe from echo.

<pre><code>echo -e "to be prepended \n another line" | cat - text.txt
</code></pre>

To rewrite the file a temporary file is required as cannot pipe back into the input file.

<pre><code>echo "to be prepended" | cat - text.txt &gt; text.txt.tmp
mv text.txt.tmp text.txt
</code></pre>

blocks|key|643665|text|更喜欢亚当的answer|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|643666|我们可以让sponge更容易使用。现在我们不需要创建一个临时文件并重命名为|643667|echo+-e+"to+be+prepended+\n+another+line"+%7C+cat+-+text.txt+%7C+sponge+text.txt|code-block|syntax|javascript|643668|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/10587718/3675670|1|http://linux.die.net/man/1/sponge^0|6|6|0|0|5|6|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]]]

Prefer Adam's <a href="https://stackoverflow.com/a/10587718/3675670">answer</a>

We can make it easier to use <a href="http://linux.die.net/man/1/sponge" rel="noreferrer">sponge</a>. Now we don't need to create a temporary file and rename it by 

<pre><code>echo -e "to be prepended \n another line" | cat - text.txt | sponge text.txt
</code></pre>

blocks|key|2281948|text|可能没有内置的东西，但您可以很容易地编写自己的代码，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2281949|#!/bin/bash
echo+-n+"$1"+>+/tmp/tmpfile.$$
cat+"$2"+>>+/tmp/tmpfile.$$
mv+/tmp/tmpfile.$$+"$2"|code-block|syntax|javascript|2281950|至少像这样的东西。|2281951|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Probably nothing built-in, but you could write your own pretty easily, like this:

<pre class="lang-bsh prettyprint-override"><code>#!/bin/bash
echo -n "$1" &gt; /tmp/tmpfile.$$
cat "$2" &gt;&gt; /tmp/tmpfile.$$
mv /tmp/tmpfile.$$ "$2"
</code></pre>

Something like that at least...

blocks|key|2388922|text|使用sed的另一种方式|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2388923|sed+-i.old+'1+{i+to+be+prepended
}'+inFile|code-block|syntax|javascript|2388924|如果要预置的行是多行：|2388925|sed+-i.old+'1+{i\+
to+be+prepended\
multiline
}'+inFile|2388926|entityMap^0|2|3|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

Another way using <code>sed</code>:

<pre><code>sed -i.old '1 {i to be prepended
}' inFile
</code></pre>

If the line to be prepended is multiline:

<pre><code>sed -i.old '1 {i\ 
to be prepended\
multiline
}' inFile
</code></pre>

blocks|key|643730|text|在某些情况下，预置文本只能从标准输入中获得。那么这个组合就会起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|643731|echo+"to+be+prepended"+%7C+cat+-+text.txt+%7C+tee+text.txt|code-block|syntax|javascript|643732|如果您想省略tee输出，则追加>+/dev/null。|offset|length|style|CODE|643733|entityMap^0|0|0|6|3|F|B|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

In some circumstances prepended text may available only from stdin.
Then this combination shall work.

<pre><code>echo "to be prepended" | cat - text.txt | tee text.txt
</code></pre>

If you want to omit <code>tee</code> output, then append <code>&gt; /dev/null</code>.

blocks|key|2282370|text|解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2282371|printf+'%25s\n%25s'+'text+to+prepend'+"$(cat+file.txt)"+>+file.txt|code-block|syntax|javascript|2282372|请注意，这在所有类型的输入上都是安全的，因为没有扩展。例如，如果你想在前面加上!@#$%25%5E&*()ugly+text\n\t\n，它就可以工作了：|offset|length|style|CODE|2282373|printf+'%25s\n%25s'+'!@#$%25%5E&*()ugly+text\n\t\n'+"$(cat+file.txt)"+>+file.txt|2282374|最后要考虑的部分是在命令替换"$(cat+file.txt)"期间删除文件末尾的空格。这方面的所有变通方法都相对复杂。如果您想保留file.txt末尾的换行符，请参阅以下内容：https://stackoverflow.com/a/22607352/1091436|2282375|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/22607352/1091436^0|0|0|13|P|0|0|E|H|2G|18|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@$I|15|J|16|K|L]]|9|@$I|17|J|18|1|19]]|A|$]]|$1|Q|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

Solution:

<pre><code>printf '%s\n%s' 'text to prepend' "$(cat file.txt)" &gt; file.txt
</code></pre>

Note that this is safe on all kind of inputs, because there are no expansions. For example, if you want to prepend <code>!@#$%^&amp;*()ugly text\n\t\n</code>, it will just work:

<pre><code>printf '%s\n%s' '!@#$%^&amp;*()ugly text\n\t\n' "$(cat file.txt)" &gt; file.txt
</code></pre>

The last part left for consideration is whitespace removal at end of file during command substitution <code>"$(cat file.txt)"</code>. All work-arounds for this are relatively complex. If you want to preserve newlines at end of file.txt, see this: <a href="https://stackoverflow.com/a/22607352/1091436">https://stackoverflow.com/a/22607352/1091436</a>

blocks|key|643828|text|在Bash+(在Ubuntu中)中测试，如果从测试文件via开始；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|643829|echo+"Original+Line"+>+test_file.txt|offset|length|style|CODE|643830|你可以执行；|643831|echo+"$(echo+"New+Line";+cat+test_file.txt)"+>+test_file.txt|643832|或者，如果bash的版本对于$()来说太旧，您可以使用反引号；|643833|echo+"`echo+"New+Line";+cat+test_file.txt`"+>+test_file.txt|643834|并接收“test_file.txt”的以下内容；|643835|New+Line
Original+Line|code-block|syntax|javascript|643836|没有中间文件，只有bash/echo。|643837|entityMap^0|0|0|10|0|0|0|1O|0|0|0|1N|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@$D|12|E|13|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|14|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|15|8|@$D|16|E|17|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|18|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|19|8|@$D|1A|E|1B|F|G]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|T|7|1D|8|@]|9|@]|A|$U|V]]|$1|W|3|X|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|Z|$]]

As tested in Bash (in Ubuntu), if starting with a test file via;

<code>echo "Original Line" &gt; test_file.txt</code>

you can execute;

<code>echo "$(echo "New Line"; cat test_file.txt)" &gt; test_file.txt</code>

or, if the version of bash is too old for $(), you can use backticks;

<code>echo "`echo "New Line"; cat test_file.txt`" &gt; test_file.txt</code>

and receive the following contents of "test_file.txt";

<pre><code>New Line
Original Line
</code></pre>

No intermediary file, just bash/echo.

blocks|key|2282220|text|另一个相当简单的解决方案是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2282221|++++$+echo+-e+"string\n"+$(cat+file)|code-block|syntax|javascript|2282222|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|$]]

Another fairly straight forward solution is:

<pre><code> $ echo -e "string\n" $(cat file)
</code></pre>

blocks|key|1374969|text|如果您喜欢vi/vim，这可能更适合您的风格。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374970|printf+'0i\n%25s\n.\nwq\n'+prepend-text+%7C+ed+file|code-block|syntax|javascript|1374971|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|$]]

If you like vi/vim, this may be more your style.

<pre><code>printf '0i\n%s\n.\nwq\n' prepend-text | ed file
</code></pre>

blocks|key|2393406|text|对于想要附加一行或多行文本(带有变量甚至subshell代码)并保持其可读性和格式化的未来读者，您可能会喜欢以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2393407|echo+"Lonely+string"+>+my-file.txt|code-block|syntax|javascript|2393408|然后运行|2393409|cat+<<EOF+>+my-file.txt
Hello,+there!

$(cat+my-file.txt)
EOF|2393410|cat+my-file.txt的结果|offset|length|style|CODE|2393411|Hello,+there!

Lonely+string|2393412|这之所以有效，是因为读取my-file.txt首先发生在一个子subshell中。我一直使用这个技巧将重要的规则附加到Docker容器中的配置文件中，而不是复制整个配置文件。|2393413|entityMap^0|0|0|0|0|0|F|0|0|C|B|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@$M|11|N|12|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|14|8|@$M|15|N|16|O|P]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

For future readers who want to append one or more lines of text (with variables or even subshell code) and keep it readable and formatted, you may enjoy this:
<pre><code>echo &quot;Lonely string&quot; &gt; my-file.txt
</code></pre>
Then run
<pre><code>cat &lt;&lt;EOF &gt; my-file.txt
Hello, there!

$(cat my-file.txt)
EOF
</code></pre>
Results of <code>cat my-file.txt</code>:
<pre><code>Hello, there!

Lonely string
</code></pre>
This works because the read of <code>my-file.txt</code> happens first and in a subshell. I use this trick all the time to append important rules to config files in Docker containers rather than copy over entire config files.

blocks|key|2282503|text|%25+echo+blaha+>+blaha
%25+echo+fizz+>+fizz
%25+cat+blaha+fizz+>+buzz
%25+cat+buzz+
blaha
fizz|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2282504|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>% echo blaha &gt; blaha
% echo fizz &gt; fizz
% cat blaha fizz &gt; buzz
% cat buzz 
blaha
fizz
</code></pre>

blocks|key|643585|text|#+create+a+file+with+content..
echo+foo+>+/tmp/foo
#+prepend+a+line+containing+"jim"+to+the+file
sed+-i+"1s/%5E/jim\n/"+/tmp/foo
#+verify+the+content+of+the+file+has+the+new+line+prepened+to+it
cat+/tmp/foo|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|643586|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code># create a file with content..
echo foo &gt; /tmp/foo
# prepend a line containing "jim" to the file
sed -i "1s/^/jim\n/" /tmp/foo
# verify the content of the file has the new line prepened to it
cat /tmp/foo
</code></pre>

blocks|key|643798|text|我建议定义一个函数，然后在需要的地方导入和使用它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|643799|prepend_to_file()+{+
++++file=$1
++++text=$2

++++if+!+[[+-f+$file+]]+then
++++++++touch+$file
++++fi

++++echo+"$text"+%7C+cat+-+$file+>+$file.new

++++mv+-f+$file.new+$file
}|code-block|syntax|javascript|643800|然后像这样使用它：|643801|prepend_to_file+test.txt+"This+is+first"
prepend_to_file+test.txt+"This+is+second"|643802|您的文件内容将是：|643803|This+is+second
This+is+first|643804|我将使用这种方法来实现一个更改日志更新器。|643805|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I'd recommend defining a function and then importing and using that where needed.

<pre><code>prepend_to_file() { 
 file=$1
 text=$2

 if ! [[ -f $file ]] then
 touch $file
 fi

 echo "$text" | cat - $file &gt; $file.new

 mv -f $file.new $file
}
</code></pre>

Then use it like so:

<pre><code>prepend_to_file test.txt "This is first"
prepend_to_file test.txt "This is second"
</code></pre>

Your file contents will then be:

<pre><code>This is second
This is first
</code></pre>

I'm about to use this approach for implementing a change log updater.

blocks|key|2282468|text|您可以使用awk轻松地做到这一点|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2282469|cat+text.txt%7Cawk+'{print+"to+be+prepended"$0}'|code-block|syntax|javascript|2282470|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|$]]

You can do that easily with awk
<pre><code>cat text.txt|awk '{print &quot;to be prepended&quot;$0}'
</code></pre>

Is there a Unix command to prepend some string data to a text file?

Something like:

<pre><code>prepend "to be prepended" text.txt
</code></pre>

Unix command to prepend text to a file

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。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

是否有一个Unix命令可以将一些字符串数据预先添加到文本文件中？类似于：prepend "to be prepended" text.txt

问用于将文本预先添加到文件的Unix命令
EN

回答 18

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问用于将文本预先添加到文件的Unix命令EN

回答 18

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问用于将文本预先添加到文件的Unix命令
EN