Some System V UNIX versions don't support the tail command (25.14). Here are a shell function and alias named ptail that give you an equivalent:
ptail() { sed -e :a -e '$q;N;11,$D;ba' $1; } alias ptail sed -e :a -e \''$q;N;11,$D;ba'\'
This prints the last ten lines of a file. (Greg Ubben wrote ptail.)
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