sed 替换两个符号之间的内容为别的内容怎么写

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{
"port_password":{
"2016":"helloss",
"1027":"wwwcc"
},
"method":"aes-256-cfb",
"timeout":600
}
要把第三行中的 helloss 替换成 haha 可以下面这样
sed -i 's/helloss/haha/g' filename
但是 helloss 是不确定的，我只是想把第三行第二对双引号之间的内容替换成 haha ，应该怎么写啊

helloss

haha

sed

替换

4 replies • 2016-02-20 02:25:23 +08:00

rrfeng

Feb 20, 2016

人生苦短，请用 json 解析库……

Strikeactor

Feb 20, 2016

sed 's/"2016":".*"/"2016":"haha"/'

fazero

Feb 20, 2016

@Strikeactor 谢谢，太强了

SoloCompany

Feb 20, 2016

echo ‘
{
"port_password":{
"2016":"hello\"ss",
"1027":"wwwcc"
},
"method":"aes-256-cfb",
"timeout":600
}' | node -e '
x=JSON.parse(require("fs").readFileSync("/dev/stdin"))
x.port_password["2016"] = "f*ckgfw?"
console.log(JSON.stringify(x))
‘
{"port_password":{"1027":"wwwcc","2016":"f*ckgfw?"},"method":"aes-256-cfb","timeout":600}