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如何在 KSH shell 脚本中调用变量

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如何在 KSH shell 脚本中调用变量 
#!/bin/sh
# This script is for checking the status of SSHD2 Number of  connections

CHKOUT="Please also Check the Number of ORPHAN / DEFUNCT Process on `hostname` :"
DFOUT=`/usr/bin/ps -eaf | grep defucnt`
SHCOUNT=`/usr/bin/pgrep sshd2|wc -l`
if [ $SHCOUNT -gt 150 ]

then
    mailx -s "Warning! : `hostname` has more than $SHCOUNT  SSHD2 Connections running Please Check!" [email protected]  << EOF

`echo  $CHKOUT`
`echo "=========================================================="`
`echo  $DFOUT`

EOF
fi

=======================================

我无法获得“DFOUT”变量的输出，你们能建议正确的方法吗？

===================
Edited code that is working nice..

#!/bin/sh
# This script is for checking the status of SSHD2 Number of  connections
CHKOUT="Please also Check the Number of ORPHAN / DEFUNCT Process on `hostname` :"
PS=`/usr/bin/ps -eaf | grep -v grep| grep defunct`
SHNT=`/usr/bin/pgrep ssh|wc -l`

if [ $SHNT -gt 15 ]

then

        mailx -s "Warning!  `hostname` has more than $SHNT SSHD2 Connections running Please Check!"  [email protected]   << EOF
        Hi Team,

        $CHKOUT
        ===========================================================
        $PS

EOF
fi

答案1

该问题可能与以下事实有关：echo 命令应该写入，mailx STDIN但使用内联反引号执行此操作的方式可能会出现问题。我会尝试将消息正文通过管道传输到mailx：

...
then
    SEP="============================================"
    BODY="$CHKOUT\n$SEP\n$DFOUT"
    echo $BODY | mailx -s "Warning! : ..."
fi

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