In my experience, with this kind of question, it helps to know exactly what format is expected. First, you said "I only need to escape the specific character '", which is easily solved by hippo's suggestion of s/'/\\'/g, but later on you said "I thought also about escaping the back slash character" - so do you want to escape both backslashes and single quotes? Are there maybe any more characters? In other words, what will you be using these strings for, what API are you passing them to? That would be a good reference for the expected format.
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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