[英]SSH command option with bash for loop
I want to symbolically link two arrays' elements. 我想象征性地链接两个数组的元素。 For example,
array1 = (AAA BBB CCC DDD)
, array2 = (001 002 003 004)
, 001->AAA
, 002->BBB
, 003->CCC
and 004->DDD
. 例如,
array1 = (AAA BBB CCC DDD)
, array2 = (001 002 003 004)
, array2 = (001 002 003 004)
001->AAA
, 004->DDD
002->BBB
, 003->CCC
和004->DDD
。
Here is the shell script I wrote, but it doesn't work, and I couldn't figure out where is wrong. 这是我写的shell脚本,但它不起作用,我无法弄清楚哪里出错了。
declare -a array1=(AAA BBB CCC DDD)
declare -a array2=(001 002 003 004)
num = ${#array1[@]}
ssh username@hostmachine 'for((i = 0 ; i < $num ; i++ )); do ln -sf ${array1[$i]} ${array2[$i]}; done'
Can anyone give me some hints/advice? 谁能给我一些提示/建议? Thank you in advance.
先感谢您。
You should include all your bash code inside the parameter to ssh
, like this: 您应该将参数中的所有bash代码包含在
ssh
,如下所示:
ssh username@hostmachine 'declare -a array1=(AAA BBB CCC DDD); declare -a array2=(001 002 003 004); num = ${#array1[@]}; for((i = 0 ; i < $num ; i++ )); do ln -sf ${array1[$i]} ${array2[$i]}; done'
because otherwise the ssh bash code won't get access to your previously defined arrays, because they were defined in your computer not in the ssh one. 因为否则ssh bash代码将无法访问您之前定义的数组,因为它们是在您的计算机中定义的,而不是在ssh中定义的。
初看起来,我会说你错过了循环中的最后done
:
ssh username@hostmachine 'for((i = 0 ; i < $num ; i++ )); do ln -sf ${array1[$i]} ${array2[$i]}; done'
The variable substitution isn't happening insside single quotes. 变量替换不是在单引号内发生的。 Try double quotes instead:
请尝试双引号:
declare -a array1=(AAA BBB CCC DDD)
declare -a array2=(001 002 003 004)
num=${#array1[@]}
ssh username@hostmachine "for((i = 0 ; i < $num ; i++ )); do ln -sf ${array1[$i]} ${array2[$i]}; done"
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.