Please help for solving problem with sed

Thank you in advance

#by executing bash file
#!/bin/sh

sed -i 's/if (IEexec || domExec) document.write('<iframe id="IdMyIframe" '+IframePropriedades+'></iframe>');//g' *.php

output is:

line 4: syntax error near unexpected token `<'
line 4: `sed -i 's/if (IEexec || domExec) document.write('<iframe id="IdMyIframe" '+IframePropriedades+'></iframe>');//g' *.php'

You probably need to escape quotes and slashes (i.e. the slash in </iframe>).

The problem is that the pattern contains single quotes, so that they are open and closed alternatively, leaving part of the string to the shell which tries to interpret it with its own rules. Basically you can keep the quotes around the whole sed command and escape the inner ones. Moreover you have to use another separator in the sed command (other than slash) to avoid confusion with the literal slashes in the pattern. Something like this should work:
In this example the opening quote is closed, then followed by an escaped quote (in red) and then re-opened. In alternative you can use double quotes to embed the sed command and escape the double quotes inside the pattern:
Please test these solution without the -i option, until you're sure of the results.

1 members found this post helpful.

Cool, I didn't realise you could do that.

I usually use the hash sign, as the separator, when editing xml or html files in sed, or vim. Many people use the bar sign| instead. These stand out more, but any character will do that isn't in the strings or has another use.

Using double quotes is necessary if you want to embed the value of a variable in the sed command. So remember to escape the $ sign if it is in the sed command normally.

One of the many tricks of sed. You can also use a different delimiter for regular expressions in sed addresses. Suppose you have a slash inside the regexp: you can't do:
but you can put a backslash as first character of the sed command followed by a custom delimiter:

1 members found this post helpful.

sed "s:if (IEexec || domExec) document.write('<iframe id=\"IdMyIframe\" '+IframePropriedades+'></iframe>');::g" file.php

that's the solution.
Thanks a lot