entityMap|blocks|key|dbihm|text|这里真的没有很好的答案。如果线程死了，很抱歉，它出现在谷歌搜索中，但没有真正回答这个问题。尽管altendky的答案和我的一样……有一个workaround...find，一个全局可写的目录，比如/tmp|type|unstyled|depth|inlineStyleRanges|entityRanges|data|608jl|cp+/etc/file_to_mod+/tmp
sed+-i+-e+'s/foo/bar/g'+/tmp/file_to_mod
cat+/tmp/file_to_mod+>/etc_file_to_mod|code-block|syntax|javascript|6o4oo|希望这能有所帮助！^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|J|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|K|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|L|9|@]|A|@]|B|$]]]]

Really no great answers here. Sorry if thread is dead, it came up in google searches and nothing really answered the question. Although altendky's answer is sort of the same as mine... There IS a workaround...find a world writable directory, say /tmp

<pre><code>cp /etc/file_to_mod /tmp
sed -i -e 's/foo/bar/g' /tmp/file_to_mod
cat /tmp/file_to_mod &gt;/etc_file_to_mod
</code></pre>

Hope that helps!

entityMap|blocks|key|2kff9|text|在就地编辑文件时，sed创建一个临时文件，保存结果，最后用临时文件对原始文件进行mv。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|7etqk|问题是您在sed尝试创建临时文件的目录中没有写权限。|cth3t|因为该文件是/tmp/+file，所以请检查运行该命令的目录的权限。^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|G|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|H|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|I|9|@]|A|@]|B|$]]]]

While editing a file in place, sed creates a temporary file, saves the result and then finally mv the original file with the temporary one.

The problem is that you don't have write permission in the directory where sed is trying to create the temp file.

As the file is /tmp/file, check the permission of the directory where you are running the command.

entityMap|blocks|key|egk03|text|看起来你有一个权限问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|43tpo|目录(如下所述，您可以在|q59f|，所以|cq7sa|可以设置在其他位置，而不是|18agi|)|d78bh|它应该如下所示：|dckbr|$+ls+-ld+/tmp
drwxrwxrwx+333+root+root+32768+12+oct.++03:13+/tmp/|code-block|syntax|javascript|f51jn|解释|fftmt|调用时|ufbg|使用|ba1o5|旗帜，|1jo4k|在中创建临时文件|vbne|目录|7hnb2|证明|4qd5i|：|3ifhp|$+strace+-f+-e+trace=file+sed+-i+'s/a/z/'+/tmp/a
execve("/bin/sed",+["sed",+"-i",+"s/a/z/",+"/tmp/a"],+[/*+94+vars+*/])+=+0
access("/etc/ld.so.preload",+R_OK)++++++=+-1+ENOENT+(No+such+file+or+directory)
open("/etc/ld.so.cache",+O_RDONLY%7CO_CLOEXEC)+=+3
(...)
open("/tmp/sedPSBTPG",+O_RDWR%7CO_CREAT%7CO_EXCL,+0600)+=+4
rename("/tmp/sedPSBTPG",+"/tmp/a")++++++=+0
%2B%2B%2B+exited+with+0+%2B%2B%2B^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|19|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|1A|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|1B|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|1C|9|@]|A|@]|B|$]]|$2|I|4|J|6|7|8|1D|9|@]|A|@]|B|$]]|$2|K|4|L|6|7|8|1E|9|@]|A|@]|B|$]]|$2|M|4|N|6|O|8|1F|9|@]|A|@]|B|$P|Q]]|$2|R|4|S|6|7|8|1G|9|@]|A|@]|B|$]]|$2|T|4|U|6|7|8|1H|9|@]|A|@]|B|$]]|$2|V|4|W|6|7|8|1I|9|@]|A|@]|B|$]]|$2|X|4|Y|6|7|8|1J|9|@]|A|@]|B|$]]|$2|Z|4|10|6|7|8|1K|9|@]|A|@]|B|$]]|$2|11|4|12|6|7|8|1L|9|@]|A|@]|B|$]]|$2|13|4|14|6|7|8|1M|9|@]|A|@]|B|$]]|$2|15|4|16|6|7|8|1N|9|@]|A|@]|B|$]]|$2|17|4|18|6|O|8|1O|9|@]|A|@]|B|$P|Q]]]]

Seems like you have a permission issue on the <code>/tmp</code> dir. (as discussed bellow, you run command in <code>phpshell</code>, so <code>TMP dir</code> can be setted elsewhere than <code>/tmp</code>)

It should looks like : 

<pre><code>$ ls -ld /tmp
drwxrwxrwx 333 root root 32768 12 oct. 03:13 /tmp/
</code></pre>

explanations

When invoking <code>sed</code> with <code>-i</code> flag, <code>sed</code> create a temporary file in <code>/tmp</code> dir.

<hr>

Proof with <code>strace</code> :

<pre><code>$ strace -f -e trace=file sed -i 's/a/z/' /tmp/a
execve("/bin/sed", ["sed", "-i", "s/a/z/", "/tmp/a"], [/* 94 vars */]) = 0
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
(...)
open("/tmp/sedPSBTPG", O_RDWR|O_CREAT|O_EXCL, 0600) = 4
rename("/tmp/sedPSBTPG", "/tmp/a") = 0
+++ exited with 0 +++
</code></pre>

entityMap|blocks|key|8qrpn|text|我想你可以在你的指挥面前说"sudo“。就像sudo+sed+-i的/geteuid/getppid/g‘/usr/bin/vlc一样，它也适用于我。|type|unstyled|depth|inlineStyleRanges|entityRanges|data^0^^$0|$]|1|@$2|3|4|5|6|7|8|C|9|@]|A|@]|B|$]]]]

I think you can you "sudo" in front of your command. Like
sudo sed -i 's/geteuid/getppid/g' /usr/bin/vlc
It worked for me.

entityMap|blocks|key|7kg1t|text|假设您对以下目录没有写访问权限|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3qph2|是存储的，则通常您不能访问|4j3g6|...？假设这是一个“非标准”的情况，并且您确实拥有写访问权限，|arpen|正在尝试在与的同一目录中创建临时文件|2m2qf|(刚刚检查过，它是同一个目录，而不是CWD)。运行|19i3r|没有|adh0|并以下面这样的语句结束这一行：|6fhm4|要将结果写入主目录中的文件中，请执行以下操作。然后，您可以对该文件执行任何操作。|106ea|sed+'s@@@'+index.php+>+~/sed.out|code-block|syntax|javascript|6ihgh|请注意，当你可以的时候|8qu8t|你不能|cmd6f|..。看起来|ce9dp|会将内容放入|bfemr|(不修改您没有写入权限的目录)|70j2d|尝试更改目录(您没有写入权限)。^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|17|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|18|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|19|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|1A|9|@]|A|@]|B|$]]|$2|I|4|J|6|7|8|1B|9|@]|A|@]|B|$]]|$2|K|4|L|6|7|8|1C|9|@]|A|@]|B|$]]|$2|M|4|N|6|7|8|1D|9|@]|A|@]|B|$]]|$2|O|4|P|6|7|8|1E|9|@]|A|@]|B|$]]|$2|Q|4|R|6|S|8|1F|9|@]|A|@]|B|$T|U]]|$2|V|4|W|6|7|8|1G|9|@]|A|@]|B|$]]|$2|X|4|Y|6|7|8|1H|9|@]|A|@]|B|$]]|$2|Z|4|10|6|7|8|1I|9|@]|A|@]|B|$]]|$2|11|4|12|6|7|8|1J|9|@]|A|@]|B|$]]|$2|13|4|14|6|7|8|1K|9|@]|A|@]|B|$]]|$2|15|4|16|6|7|8|1L|9|@]|A|@]|B|$]]]]

Given that you do not have write access to the directory where <code>index.php</code> is stored, then generally you would not have access to <code>index.php</code>...? Assuming this is a 'non-standard' case and you do have write access, <code>sed -i</code> is trying to create a temp file in the same directory as <code>index.php</code> (just checked and it is the same directory, not the CWD). Run <code>sed</code> without <code>-i</code> and end the line with something like <code>&gt; ~/sed.out</code> to write the result into a file in your home directory. Then do what you will with that file.

<pre><code>sed 's@&lt;head&gt;@&lt;head&gt;&lt;script type="text/javascript" src="new.js"&gt;&lt;/script&gt;@' index.php &gt; ~/sed.out
</code></pre>

Be aware that you while you can <code>cp ~/sed.out index.php</code> you can not <code>mv ~/sed.out index.php</code>. It would seem that <code>cp</code> will put the contents into <code>index.php</code> (not modifying the directory you do not have write permissions to) while <code>mv</code> tries to change the directory (that you don't have write permissions to).

entityMap|blocks|key|d09r2|text|检查|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3l6d2|文件夹权限应具有以下权限|3tv25|drwxrwxrwt+++7+root+root+4.0K+Nov+16+15:06+tmp|code-block|syntax|javascript|9do70|如果对您不合适，请运行以下命令|jdd2|sudo+chown+root:root+/tmp
sudo+chmod+1777+/tmp|bahoa|一旦完成此操作，则将一个|dupe4|在您的|f2ho3|命令，以root用户身份执行该命令。|2rubs|这就解决了这个问题^0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|V|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|W|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|X|9|@]|A|@]|B|$H|I]]|$2|J|4|K|6|7|8|Y|9|@]|A|@]|B|$]]|$2|L|4|M|6|G|8|Z|9|@]|A|@]|B|$H|I]]|$2|N|4|O|6|7|8|10|9|@]|A|@]|B|$]]|$2|P|4|Q|6|7|8|11|9|@]|A|@]|B|$]]|$2|R|4|S|6|7|8|12|9|@]|A|@]|B|$]]|$2|T|4|U|6|7|8|13|9|@]|A|@]|B|$]]]]

check for the <code>/tmp</code> folder permission
It should have the following permission

<pre><code>drwxrwxrwt 7 root root 4.0K Nov 16 15:06 tmp
</code></pre>

If it is not ok for you then run the following commands

<pre><code>sudo chown root:root /tmp
sudo chmod 1777 /tmp
</code></pre>

once this is done, then put a <code>sudo</code> infront of your <code>sed</code> command to execute the command as a root user.

This will solve the issue

entityMap|blocks|key|akft|text|如果使用sed不是一个严格的要求，那么您可以使用高度忽略的命令|type|unstyled|depth|inlineStyleRanges|entityRanges|data|fhplj|..。|41pkj|The+The+The|697qo|构造将通过管道将'‘作为标准输入|3iaqe|The+The+The|ck439|构造将被解析为特殊字符。在本例中，|5ebb1|将字符串拆分为两行|8ac5t|您可以使用任何想要生成的结构并通过管道输入输入(echo、printf等)。|9tfmc|标准输入字符串：|56oj2|%25s@@@
wq|code-block|syntax|javascript|20rn8|第一行是您的正则表达式搜索和替换为命令|d24sr|..。第二行告诉我们|4po2b|写入更改并退出。您可以从vi中识别这些命令。|4v9sb|来源：|eoq5n|mrbluecoat.blogspot.com/2014/03/in-place-editing-right-way-hint-dont.html^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|17|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|18|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|19|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|1A|9|@]|A|@]|B|$]]|$2|I|4|J|6|7|8|1B|9|@]|A|@]|B|$]]|$2|K|4|L|6|7|8|1C|9|@]|A|@]|B|$]]|$2|M|4|N|6|7|8|1D|9|@]|A|@]|B|$]]|$2|O|4|P|6|7|8|1E|9|@]|A|@]|B|$]]|$2|Q|4|R|6|7|8|1F|9|@]|A|@]|B|$]]|$2|S|4|T|6|U|8|1G|9|@]|A|@]|B|$V|W]]|$2|X|4|Y|6|7|8|1H|9|@]|A|@]|B|$]]|$2|Z|4|10|6|7|8|1I|9|@]|A|@]|B|$]]|$2|11|4|12|6|7|8|1J|9|@]|A|@]|B|$]]|$2|13|4|14|6|7|8|1K|9|@]|A|@]|B|$]]|$2|15|4|16|6|7|8|1L|9|@]|A|@]|B|$]]]]

If the use of sed is not a hard requirement, you can probably use the highly ignored command <code>ed</code>.
<code>ed -s index.php &lt;&lt;&lt; $'%s@&lt;head&gt;@&lt;head&gt;&lt;script type=&quot;text/javascript&quot; src=&quot;new.js&quot;&gt;&lt;/script&gt;@\nwq'</code>
<ul>
<li>The <code>&lt;command&gt; &lt;&lt;&lt; '&lt;my_input_string&gt;'</code> construct will pipe '&lt;my_input_string&gt;' into the <code>&lt;command&gt;</code> as standard input</li>
<li>The <code>$'...'</code> construct will be parsed for special characters. In this case the <code>\n</code> splits the string into two lines</li>
<li>You can use any construct you want to generate and pipe in the input (echo, printf, etc.)</li>
</ul>
Standard Input String:
<pre><code>%s@&lt;head&gt;@&lt;head&gt;&lt;script type=&quot;text/javascript&quot; src=&quot;new.js&quot;&gt;&lt;/script&gt;@
wq
</code></pre>
The first line is your regex search and replace as command for <code>ed</code>. The second line tells <code>ed</code> to write the changes and quit. You may recognize these commands from vi.
source: <a href="https://mrbluecoat.blogspot.com/2014/03/in-place-editing-right-way-hint-dont.html" rel="nofollow noreferrer">mrbluecoat.blogspot.com/2014/03/in-place-editing-right-way-hint-dont.html</a>

entityMap|blocks|key|4tt4r|text|简短的回答：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|7tn0m|$+chmod+%2Bw+.|code-block|syntax|javascript|asde0|然后重新运行|5usfb|..。|2qf2|答案很长：|bbo2h|如前所述，问题来自于您没有写入权限的事实|bp1g6|(运行时所在的当前目录|f5a8m|)。如果你在你自己的机器/驱动器上，那么你肯定可以给自己写这个目录的权限，这就是|2lc1r|在这里做，除非你出于某种原因想要保护它。然而，如果你在一个网络驱动器上，并且不能改变你对它的权限，那么你应该请求拥有这个目录的人去做，或者使用一个变通的解决方案，比如复制-修改-把文件传到其他地方。^0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|V|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|W|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|X|9|@]|A|@]|B|$]]|$2|J|4|K|6|7|8|Y|9|@]|A|@]|B|$]]|$2|L|4|M|6|7|8|Z|9|@]|A|@]|B|$]]|$2|N|4|O|6|7|8|10|9|@]|A|@]|B|$]]|$2|P|4|Q|6|7|8|11|9|@]|A|@]|B|$]]|$2|R|4|S|6|7|8|12|9|@]|A|@]|B|$]]|$2|T|4|U|6|7|8|13|9|@]|A|@]|B|$]]]]

Short answer :
<pre><code>$ chmod +w .
</code></pre>
And re-run <code>sed</code>.
Long answer :
As already said, the problem come from the fact that you don't have write permission on <code>.</code> (the current directory from which you run <code>sed</code>). If you are on your own machine/drive then you surely can give yourself the permission to write on this directory, that's what the <code>chmod</code> do here, unless you want protect it for some reason. However, if your on a network drive and can't change your permission on it then you should ask the one that own the directory to do it or use a workaround solution like copy-modify-past the file somewhere else.

entityMap|blocks|key|h80r|text|我认为有一个更简单的解决方案。您可以将文件打印到标准输出，然后在流上使用sed。然后，您只需将流重定向到同一文件。显然，这是一个有风险的解决方案，因为如果您不是100%25确定自己在做什么，那么可能会丢失文件的全部内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|a668h|cat+index.php+%7C+sed+'s@@@'+>+index.php|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

I think there is a much easier solution. You can just print the file to the standard output and then use the <code>sed</code> on the stream. Afterward, you just redirect the stream to the same file. Obviously, it is a risky solution cause if you are not 100% sure that you know what you are doing you might lose the entire content of the file in question.
<pre><code>cat index.php | sed 's@&lt;head&gt;@&lt;head&gt;&lt;script type=&quot;text/javascript&quot; src=&quot;new.js&quot;&gt;&lt;/script&gt;@' &gt; index.php
</code></pre>

entityMap|blocks|key|bcp0r|text|您需要对要更改其文件的文件夹具有写入权限。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4cg93|如下所述：|ed09l|https://stackoverflow.com/a/36404569/5381704^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|G|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|H|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|I|9|@]|A|@]|B|$]]]]

You need to have the write permissions to the folder whose file you are changing. 

As explained here: <a href="https://stackoverflow.com/a/36404569/5381704">https://stackoverflow.com/a/36404569/5381704</a>

I am trying to use sed to overwrite my index.php file, but I am getting an error:

<pre><code>$ sed -i 's@&lt;head&gt;@&lt;head&gt;&lt;script type="text/javascript" src="new.js"&gt;&lt;/script&gt;@' index.php
sed: couldn't open temporary file ./sedmZNx8T: Permission denied
</code></pre>

Does anyone know how to fix this?

sed permission denied when overwriting 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。

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 我正在尝试使用sed来覆盖我的index.php文件，但是我得到了一个错误： $ sed -i 's@@@' index.phpsed: couldn't open temporary file ./sedmZNx8T: Permission denied 有人知道怎么解决这个问题吗？

问覆盖文件时sed权限被拒绝
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回答 10

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问覆盖文件时sed权限被拒绝
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