MQ Ksh Shell腳本-陷阱錯誤

Question

我有如下的ksh腳本。

if [ `uname` == "AIX" ]; then
    export LIBPATH_BKP_$$=$LIBPATH
    # Trap so that it will return the original library path when script exits
    trap 1 2 3 9 15 "export LIBPATH=$LIBPATH_BKP_$$; unset LIBPATH_BKP_$$"
    export LIBPATH=/usr/mqm/lib:$LIBPATH
else # All else will be either Linux or Solaris which uses LD_LIBRARY_PATH
    export LD_LIBRARY_PATH_BKP_$$=$LD_LIBRARY_PATH
    # Trap so that it will return the original library path when script exits
    trap 1 2 3 9 15 "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH_BKP_$$; unset LD_LIBRARY_PATH_BKP_$$"
    export LD_LIBRARY_PATH=/usr/mqm/lib:$LD_LIBRARY_PATH_BKP_$$
fi

當我執行它說

tdestop.ksh [52]：陷阱：export LD_LIBRARY_PATH = 49648; 未設置LD_LIBRARY_PATH_BKP_49648：錯誤陷阱

tdestop.ksh-是腳本名稱及其第52行的錯誤提示。

問題是什么是陷阱？ 這是怎么了？ 我不是這方面的專家。 抱歉，這個問題真的是新手。

謝謝，Dwija

Answer 1

語法為：

trap action signals...

例如

trap 'echo "I caught something"' HUP INT TERM

您已經翻轉了動作和信號的順序，這就是ksh抱怨的原因。 您應該改為使用：

trap "export LIBPATH=$LIBPATH_BKP_$$; unset LIBPATH_BKP_$$" 1 2 3 9 15