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Full Discussion: Understanding sed
Top Forums Shell Programming and Scripting Understanding sed Post 302774009 by Scrutinizer on Friday 1st of March 2013 04:06:20 AM
Old 03-01-2013
Hi, the first one deletes the second field only if it consists of one character... It replace the first field and a colon + a character and a colon with the first field (that was captured with \( .. \) and recalled by\1) and two colons

The second replaces any number of non-colons and a colon by a colon, the number two means the it does this with the second occurrence on a line...
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