關(guān)于ssh帶入變量問(wèn)題

orablue

我想實(shí)現(xiàn)一個(gè)ssh的功能,ssh要發(fā)命令的機(jī)器是變量:

LOG=$workpath/log/log.log
DR_LOG=$workpath/log/drlog.log
PRIMARYHOST=`echo $PRIMARYHOST|sed "s/'//g"`
STANDBYHOST=`echo $STANDBYHOST|sed "s/'//g"`
ssh $PRIMARYHOST $workpath/getscn.sh|tee $LOG >/dev/null 2>&1
ssh $STANDBYHOST $workpath/getscn.sh|tee $DR_LOG >/dev/null 2>&1

這樣寫后,實(shí)際運(yùn)行的情況報(bào)錯(cuò):

$ sh dg_timelag.sh
: Hostname and service name not provided or found
: Hostname and service name not provided or found

但是如果我將$PRIMARYHOST和$STANDBYHOST 寫成實(shí)際主機(jī)名就不會(huì)報(bào)錯(cuò),請(qǐng)問(wèn)是什么原因?

expert1

eval ssh $XXX

expert1

后邊的需要轉(zhuǎn)義，給你個(gè)例子吧

1. cmd=ls -l
   
2. host=1.1.1.1
   
3. eval ssh user@$host "\$cmd"

復(fù)制代碼

expert1

怎么感覺你的主機(jī)名字沒獲取到呢？可以bash -x 看下。