在bash中如何读取/处理2个文件同步?
a b c
另一个文件是
1 2 3
如何循环通过这些文件同步,以便a与1,b-> 2,c-> 3相关联?
我以为我可以读取文件作为一个数组,然后用索引处理它,但似乎我的语法/逻辑不正确.
所以做f1 = $(cat file1)使f1 = a b c.我以为做f1 =($(cat file1))会使它成为一个数组,但它使f1 = a,因此没有数组来处理.
如果有人想知道我搞砸了什么代码:
hostnames=($(cat $host_file)) # trying to read in as an array,which apparently is incorrect roles=($(cat $role_file)) for i in {0..3} do echo ${hostnames[$i]} # wanted to iterate through each element in the file/array # but there is only one object instead of N objects echo ${roles[$i]} done
你的方式:
原文链接:https://www.f2er.com/regex/356700.htmlhost_file=host1 role_file=role1 hostnames=( $(cat $host_file) ) roles=( $(cat $role_file) ) (( cnt = ${#hostnames[@]} -1 )) echo "cnt is $cnt" for (( i=0;i<=$cnt;i++)) do echo "${hostnames[$i]} -> ${roles[$i]}" done