Grep uniqueness issue
- From: jason_normandin@xxxxxxxxxxx (Jason Normandin)
- Date: Fri, 29 Jul 2005 11:03:12 -0400
Hey Guys
I am having an odd problem using grep to ensure an array only contains distinct entries.
I have a list similar to the following in a file (short example of a much longer list)
support01-FastEthernet1/0
support01-RH
jnormandin-p370-1691-SH-Cpu-2
jnormandin-p370-1691-SH
These entries may or may not appear multiple times within that list.
I am trying to create an ARRAY containing each of these entries only once (a distinct list). I am using a grep statement:
push @pingErrorsName, $element if (! grep (/\b$element\b/, @pingErrorsName));
* Where $element contains one of the above names in the list and @pingErrorsName is the distinct list of elements.
What I am finding is that the array will contain all of the correct entries except: jnormandin-p370-1691-SH. It appears as though the grep is matching jnormandin-p370-1691-SH to the
jnormandin-p370-1691-SH-Cpu-2 string (as it is a substring of the second one).
Now I am using word boudnary anchors (\b) in the grep so I am confused as to why this is not working.
Does anyone have any ideas as to why this is occuring and how I can prevent it?
.
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