英文:
Replacement inside var variable: add https:// and port to each IP on a list of somma separated IPs
问题
我有一个包含IP列表的变量，我想在每个IP前面加上http://，并在末尾加上：8083。
我的问题类似于这个其他问题：https://stackoverflow.com/questions/65378675/append-port-number-to-each-item-in-comma-separated-list-of-ips，但我不希望每个IP都被引号包围。
raw_ips="100.100.10.10,200.200.10.10,100.201.10.10"
address=magic-happens-here
变量address应包含：http://100.100.10.10:8083,http://200.200.10.10:8083,http.100.201.10.10:8083。最好magic-happens-here是一种类似于上面链接问题中使用的bash替换技巧（因为它更简洁）。
英文:
I have a variable with a list of IPs, and I want to replace each IP with http:// at the beginning and :8083 at the end.
My question is similar to this other question: https://stackoverflow.com/questions/65378675/append-port-number-to-each-item-in-comma-separated-list-of-ips but I don't want each IP to be surrounded by quotes each.
raw_ips="100.100.10.10,200.200.10.10,100.201.10.10"
address=magic-happens-here
The variable address should contain: http://100.100.10.10:8083,http://200.200.10.10:8083,http://100.201.10.10:8083. It's preferable that the magic-happens-here is some bash substitution trick similar to the one used on the linked-to question above (because of its brevity).
答案1
得分: 1
这是代码部分的翻译：
It was straightforward once I knew the syntax is called "substring replacement", in its flavour for regular patterns, whose syntax (for each match and not just the first one) is `${var//pattern/replacement}`. It can be done in one line with:
raw_ips="100.100.10.10,200.200.10.10,100.201.10.10"
address="http://${raw_ips//,/:8083,http://}:8083"
It replaces each ',' with ':8083,http://', together with an initial 'http://' and a final ':8083' to fill the head and the tail of the list.
英文:
It was straightforward once I knew the syntax is called "substring replacement", in its flavour for regular patterns, whose syntax (for each match and not just the first one) is ${var//pattern/replacement}. It can be done in one line with:
raw_ips="100.100.10.10,200.200.10.10,100.201.10.10"
address="http://${raw_ips//,/:8083,http://}:8083"
It replaces each , with :8083,http://, together with an initial http:// and a final :8083 to fill the head and the tail of the list.
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