portsclean 和 刪除 unreferenced libraries - BBS

在使用 portsclean -CDLP -DD
會出現一些message
......
** /usr/local/lib/compat/libypclnt.so.1 is shadowed by /usr/lib/libypclnt.so.1
/usr/lib/libypclnt.so.1 <- ?
/usr/local/lib/compat/libypclnt.so.1 <- compat5x-i386-5.4.0.8_5
--> This may be an undesirable situation
Leave /usr/lib/libypclnt.so.1 (specify -i to ask on this)

** /usr/local/lib/compat/libz.so.2 is shadowed by /lib/libz.so.2
/lib/libz.so.2 <- ?
/usr/local/lib/compat/libz.so.2 <- compat5x-i386-5.4.0.8_5
--> This may be an undesirable situation
Leave /lib/libz.so.2 (specify -i to ask on this)

** Clean out /usr/local/lib/compat/pkg manually on occasions.
** Try using libchk(1) (sysutils/libchk) to find out unreferenced libraries.

請問系統中有可能留下已經沒有用或過時的libs嗎
有什麼安全有效的方法刪除他們嗎
libchk會找出Unresolvable link(s), ile or directory 但不太敢刪掉.....
還有/usr/local/lib/compat/pkg 下的東西真的可以刪嗎
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PLUR

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