使用 sed 将文本替换为特殊字符
Replace text with special characters using sed
我有一个 json 这样的字符串,
rssample='{ "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":""}], "Type": "TXT","NAME":"","TTL": 300}}]}'
我想使用以下变量更新其中的名称和值..
name="testname"
newvalue="heritage=external-dns,external-dns/owner=us-east-1:sandbox-newtestowner,external-dns/resource=ingress/monitoring/prometheus-operator-alertmanager"
所以我尝试使用 sed,
newrs=$(sed -E "s/"NAME":""/"NAME":"$name"/g" <<< "$rssample")
newrs1=$(sed -E "s/"Value":""/"Value":"$newvalue"/g" <<< "$newrs")
我期待下面的输出,
{ "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":"\"heritage=external-dns,external-dns/owner=us-east-1:sandbox-newtestowner,external-dns/resource=ingress/monitoring/prometheus-operator-alertmanager\""}], "Type": "TXT","NAME":"testname","TTL": 300}}]}
但我是空的 Name.And 得到错误值 as,
sed: 1: "s/Value:/Value:"heritag ...": bad flag in substitute command: 'o'
我的输出是,
{ "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":""}], "Type": "TXT","NAME":"","TTL": 300}}]}
请告诉我如何解决这个问题?使用 sed 好主意还是 jq?
在编辑 JSON 时,使用 JSON 感知工具比 sed
通常更安全,因此通常更好。使用 jq,一种可能性是:
jq --arg name "$name" --arg newvalue "$newvalue" '
.Changes[0].ResourceRecordSet |=
(.NAME=$name
| .ResourceRecords[0].Value = $newvalue)' <<< "$rssample"
自由形式的方法
jq --arg name "$name" --arg newvalue "$newvalue" '
walk(if type == "object"
then if has("NAME") then .NAME=$name else . end
| if has("Value") then .Value = $newvalue else . end
else . end)' <<< "$rssample"
我有一个 json 这样的字符串,
rssample='{ "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":""}], "Type": "TXT","NAME":"","TTL": 300}}]}'
我想使用以下变量更新其中的名称和值..
name="testname"
newvalue="heritage=external-dns,external-dns/owner=us-east-1:sandbox-newtestowner,external-dns/resource=ingress/monitoring/prometheus-operator-alertmanager"
所以我尝试使用 sed,
newrs=$(sed -E "s/"NAME":""/"NAME":"$name"/g" <<< "$rssample")
newrs1=$(sed -E "s/"Value":""/"Value":"$newvalue"/g" <<< "$newrs")
我期待下面的输出,
{ "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":"\"heritage=external-dns,external-dns/owner=us-east-1:sandbox-newtestowner,external-dns/resource=ingress/monitoring/prometheus-operator-alertmanager\""}], "Type": "TXT","NAME":"testname","TTL": 300}}]}
但我是空的 Name.And 得到错误值 as,
sed: 1: "s/Value:/Value:"heritag ...": bad flag in substitute command: 'o'
我的输出是, { "Changes": [{"Action": "UPSERT","ResourceRecordSet": {"ResourceRecords":[{ "Value":""}], "Type": "TXT","NAME":"","TTL": 300}}]}
请告诉我如何解决这个问题?使用 sed 好主意还是 jq?
在编辑 JSON 时,使用 JSON 感知工具比 sed
通常更安全,因此通常更好。使用 jq,一种可能性是:
jq --arg name "$name" --arg newvalue "$newvalue" '
.Changes[0].ResourceRecordSet |=
(.NAME=$name
| .ResourceRecords[0].Value = $newvalue)' <<< "$rssample"
自由形式的方法
jq --arg name "$name" --arg newvalue "$newvalue" '
walk(if type == "object"
then if has("NAME") then .NAME=$name else . end
| if has("Value") then .Value = $newvalue else . end
else . end)' <<< "$rssample"