Here is a one-liner, change 5 and the match criteria to suit. 
    perl -ne '$a[($i+=1)%=5] = $_ if /foo/; END{print @a[$i+1..@a,0..$
+i]}' file

[download]

This reads all the way through the file so it will be less efficient than methods that read backwards through the file.

--
John.

In reply to Re: last $n lines that match a criteria by jmcnamara
in thread last $n lines that match a criteria by BUU

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