Need help with sed and regexp

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http://www.unix.com – Hi everyone, I would really appreciate any help I could get on the following topic. I am not very familiar with reg expressions nor with sed, I just know the basic uses. What I am trying to do is the following: I have a huge text file where I would like to replace all occurnces of a certain pattern with another one. Here an example: Code: "name1" = "12;15";   "name5" = "7";   "abc1" = "3";   "5" = "";   "-7" = "";   "hgf" = "12;15"; (HowTos)