in reply to Re^2: Comparing 2 arrays but ignoring certain patterns
in thread Comparing 2 arrays but ignoring certain patterns

I don't understand, especially where you say

... @removelist may contain more than one word such as:
ctahci_sip11cs_devslp_deto_exp:50:seed
ctahci_sip11cs_devslp_deto_exp2:50:seed

The string  'ctahci_sip11cs_devslp_deto_exp:50:seed' doesn't look like anything appearing in the  @removelist array in your OPed example code. Can you give an example of data for which NetWallah's code fails?