09-26-2018
Your statement of what you're trying to do is ambiguous. Writing a regular expression to match 01, 03, 05, 07, 10, or 11 in character positions 9 and 10 is easy (and RudiC has shown you REs that do that). But what you mean by "detect any records that contain" those strings is not at all clear. If you match one of those strings, what do you want to do?
Do you want to delete all lines that match those strings in that position?
Do you want to delete all lines that DO NOT match those strings in that position?
Do you want to delete those strings from if they occur in that position leaving the rest of the characters on the lines the matched unchanged?
And, this is a prime example where it is crucial that you tell us what operating system (or at least which version of sed) you're using. Some versions of sed accept non-standard RE forms that are used in some of RudiC's suggestions; other versions of sed will interpret those REs in a different way.
Please explain clearly the operating environment you're using and show us the output you're hoping to produce from the sample input you provided.
This User Gave Thanks to Don Cragun For This Post:
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