The reason that [\w\d\s+-/*]* also finds comma's, is because inside square brackets the dash -denotes a range. In regex, the last forward slashes // mean null. the * means zero or more. I think the second / terminates the regular expression in spite of the escape character. The -r flag (places sed in extended mode) needs to be used when the command is run. As for the forward slash, it receives no special treatment: >>> re.sub(r'/', 'a', 'b/c/d') 'bacad' The documentation describes the syntax of regular expressions in Python. The Overflow Blog Podcast 286: If you could fix any software, what would you change? So instead of \ write \\. backslash can be escaped by backslash like this: \\ and also you can use the set expression [\] like you used because there backslash loses its special meaning. sed "s|regex|replace|" file if your sed supports it. sed is used to insert this path in some file). You can escape it by preceding it with a \ (making it \/), or you could use new RegExp('/') to avoid escaping the regex. *e * Escape curly braces with forward slash Quote strings with spaces No question mark for nongreedy matching Minimal if any backslashing The regular expression /\(. if your sed supports it. How could I use a / instead of the #. Generally you define a Regex pattern by enclosing that pattern (without any additional quotes) within two forward-slashes. *)\//g does not work. How to match the forward slash using regex, You can escape it like this. I think the // is interpreted as the start of a comment in spite of the escape character. My problem is that i need to supply directory path as an argument while invoking cshell script. Forums. In sed, escaping the \s puts sed in extended mode making the s to represent a space. But in perl or python, the forward slash would be escaped with a back slash. If you use a string argument with gsub, it will just do a plain character match. grep multiple patterns Or condition on grouping data, Convert UTC Milliseconds to DATETIME in SQL server, Error: upstream prematurely closed connection while reading response header from upstream [uWSGI/Django/NGINX], Get result of Task without knowing typeof T. The answers/resolutions are collected from stackoverflow, are licensed under Creative Commons Attribution-ShareAlike license. In sed, the g means to read the file to its end. Could anyone tell me the difference here? How come there is 4px of extra padding appearing under my element? I am trying to build a javascript regex based on user input: function FindString(input) { var reg = new RegExp('' + input + ''); // [snip] perform search } But the regex will not work correctly when the user input contains a ? The character directly after the s determines which character is the separator, which must appear three times in the s command. *)\/\b/g does not work either. regex forward slash python, As for the forward slash, it receives no special treatment: >>> re.sub(r'/', 'a', 'b/c/d') 'bacad' The documentation describes the syntax of regular expressions in Python. Alternatively referred to as a solidus, virgule, upward slash, or whack, the forward slash is the name of the "/" character on the computer keyboard. With Bash and SED I'm trying to replace two strings in a js file with URL's. How to produce a range with step n in bash? regex forward slash python, As for the forward slash, it receives no special treatment: >>> re.sub(r'/', 'a', 'b/c/d') 'bacad' The documentation describes the syntax of regular expressions in Python. Here are some useful reference links that you may want to open up along side this page: 1. This all works in Bash and other command-line shells. regex forward slash c#, And if you using in C# then remember to wrap it up in a verbatim string like so: @"^\d{4}/\d{4}$" @"\d{4}/\d{4}" I noticed that others are escaping the forward slash but I don't think is necessary but doesn't do any harm if you do. *)\//g does not work. *)\//g does not work. Escaping forward slashes in sed command [duplicate], Escape a string for a sed replace pattern, sed search and replace strings containing / [duplicate]. All of the Bourne shell builtin commands are available in Bash, The rules for evaluation and quoting are taken from the POSIX specification for the ‘standard’ Unix shell.. I did it just by using (\/): JavaScript should also be able to similarly use (\/). A forward slash is also used following the final item in either type of path to indicate that that item is a directory. Both forward slash & backward slash comes under this category. 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