请高手给解释一下!

zgb_521

请大家看这个shell:
./procchk.csh $$ $0

procck.csh如下:

set PRCID=$1
set PRGCD=`basename $2`
#echo ${PRCID} $PRGCD
ps -ef | grep ${PRGCD} | grep -v "sh -c" | grep -v grep |grep -v ${PRCID} >/dev/null
if ($status == 0) then
    echo "gfgfhgfh"
    exit (1)
endif
exit (0)
请高手给解释一下!

寂寞烈火

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