本文介绍了数组值的总计数的处理方法,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
如果任何用户输入安装不可用,如何退出循环?
目前仅在日志中添加错误.
如何获取total_free_space(即free_space的总和)?
How can I exit for loop if any of the user input mount not avaialble?
currently it only add error in the log.
How to get total_free_space (i.e. sum of free_space)?
在这里,我接受用户的几个挂载点,并使用每个值来获取主机上的可用空间.
Here I'm accepting few mount points from the user and using each value to get space available on the host.
./user_input.ksh -string /m01,/m02,/m03 #!/bin/ksh STR=$2 function showMounts { echo "$STR" arr=($(tr ',' ' ' <<< "$STR")) printf "%s\n" "$(arr[@]}" for x in "${arr[@]}" do free_space=`df -h "$x" | grep -v "Avail" | awk '{print $4}'` echo "$x": free_space "$free_space" done #echo "$total_free_space" }问题:
推荐答案
如果您想保留代码,请进行测试(此处没有ksh).如果您不在乎,请阅读爱德华·莫顿的答案.
If you want to keep your code , test this (no ksh here). If you don't care, read Ed Morton's answer.
./user_input.ksh -string /m01,/m02,/m03 #!/bin/ksh STR=$2 function showMounts { echo "$STR" arr=($(tr ',' ' ' <<< "$STR")) printf "%s\n" "${arr[@]}" for x in "${arr[@]}"; do free_space=$(df -P "$x" | awk 'NR > 1 && !/Avail/{print $4}') echo "$x: free_space $free_space" ((total_free_space+=$free_space)) done echo "$((total_free_space/1024/1000))G" } showMounts警告:
"${arr[@]}"不是
"$(arr[@]}"更多推荐
数组值的总计数
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