本文介绍了在KornShell中构建动态变量名称的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我做了一个搜索,但没有找到任何类似于我想要做的事情。我有一个服务器主机名和IPs
- Servera | IPa
- Serverb | IPb
- Servern | IPn
我想要这个文件,并将每个元素放入变量
- Server_Var_1
- IP_Var_1
- Server_Var_2
- IP_Var_2
- Server_Var_n
- IP_Var_n
我目前拥有的是以下KornShell (ksh):
Counter = 0
cat hostfile | while read line; do
Server_Var _$ Counter= echo $ line | awk -F| '{print $ 1}'
IP_Var _$ Counter= echo $ line | awk -F| '{print $ 2}'
echo $ Server_Var _ [*] $ IP_Var _ [*]
done
任何帮助都不胜感激。
解决方案
$ cat hostfile
server1 | 192.168.1.101
server2 | 192.168.1.102
server3 | 192.168.1.103
$ cat foo
#!/ bin / sh
counter = 0
而IFS =|读取ip; do
eval Server_VAR_ $ counter = $ name
eval IP_VAR_ $ counter = $ ip
:$((counter + = 1))
done< hostfile
echo $ Server_VAR_0:$ IP_VAR_0
echo $ Server_VAR_1:$ IP_VAR_1
echo $ Server_VAR_2:$ IP_VAR_2
$ ./foo
server1:192.168 .1.101
server2:192.168.1.102
server3:192.168.1.103
I did a search but did not find anything quite like what I am trying to do.I have a list of Server Hostnames & IPs
- Servera | IPa
- Serverb | IPb
- Servern | IPn
I want to cat this file and put each element into variables
- Server_Var_1
- IP_Var_1
- Server_Var_2
- IP_Var_2
- Server_Var_n
- IP_Var_n
What I currently have is the following KornShell (ksh):
Counter=0
cat hostfile|while read line; do
Server_Var_"$Counter"=echo $line | awk -F"|" '{print $1}'
IP_Var_"$Counter"=echo $line | awk -F"|" '{print $2}'
echo $Server_Var_[*] $IP_Var_[*]
done
Any help is appreciated.
解决方案
$ cat hostfile
server1 | 192.168.1.101
server2 | 192.168.1.102
server3 | 192.168.1.103
$ cat foo
#!/bin/sh
counter=0
while IFS=" |" read name ip; do
eval Server_VAR_$counter=$name
eval IP_VAR_$counter=$ip
: $(( counter += 1 ))
done < hostfile
echo $Server_VAR_0:$IP_VAR_0
echo $Server_VAR_1:$IP_VAR_1
echo $Server_VAR_2:$IP_VAR_2
$ ./foo
server1:192.168.1.101
server2:192.168.1.102
server3:192.168.1.103
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