I want it to match any 4 characters that match from the beginning of the string. It will be checking for corruptness of a file. If the file is supposed to be

"4428FBABCBED062405E56F853AAE238C4428FBABCBED062405E56F853AAE238CCC9AA594B5B35063A28224E2FE347EE349E9FFEDB897E32725F42C0D9FA2400D56C78EC7E711F47AA032CB76E11996D4"

Then i want to make sure it doesnt have any repeating characters that are 4,8, and 16 characters long. So if this above string was:

"0A0AFBABCBED062405E56F853AAE238C4428FBABCBED062405E56F853AAE238CCC9AA594B5B35063A28224E2FE347EE349E9FFEDB897E32725F42C0D9FA2400D56C78EC7E711F47AA032CB76E11996D4"

Difference in these two string are the Repeating characters 0A0A at the beginning of the string. if it finds repeating characters then it will terminate the program and not continue because its checking for corruptness.

In reply to Re^3: matching characters and numbers with regex by james28909
in thread matching characters and numbers with regex by james28909

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