string - How can I escaped regular expression metacharacters from an interpolated variable in Perl? -


I need to create an "obscure" function that changes the empty-text password in the line before writing to login gives.

It looks like: 

  function pass_obscure {my $ logline = shift; My $ pass = "wer32pass $"; # This password is an example, is received as a real parameter, or is already stored in the form of global value $ logline = ~ s / $ pass / ********* / g ; Return $ $ line; }

But this, of course, does not work, the '$' sign in the password string has been projected as the character of an interval, so there is no matching, and therefore The replacement does not work.

How can I solve it?

Thank you.

(Why not just keep the password from the log line in the first place?)

Use quotemeta : 

  $ pass = "password \ $"; $ Logline = "Password: password \ $"; Print "$ pass \ n"; Print "$ logline \ n"; $ Pass_quoted = quotemeta ($ pass); $ Logline = ~ s / $ pass_quoted / ******** / g; Print "$ logline \ n"; The password is $ password: ********  / Div>

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