如何在Bash脚本中补全Samba用户信息的JSON外层结构

我是脚本编写新手，在VirtualBox中基于Ubuntu 22.04 Samba ADDC搭建了测试域universum.local。我希望通过Bash脚本查询域控制器获取10个域用户的信息并保存为JSON文件，目前已成功将用户信息导出为TXT并转换为单个用户的JSON对象，但生成的JSON文件缺少外层的{"users": []}结构，无法被本地PowerShell脚本正常读取。

现有Bash脚本代码 #

#!/bin/bash
clear

ldapuserslistfilename="ldapuserslist.txt"
ldapuserslistfile="$tmp/$ldapuserslistfilename"
    
ldapusersinfofilename="ldapusersinfo.txt"
ldapusersinfofile="$tmp/$ldapusersinfofilename"

# main code
touch $ldapuserslistfile
touch $ldapusersinfofile

samba-tool user list > $ldapuserslistfile

while read -r line ; do
 for user in $line ; do
  samba-tool user show $user >> $ldapusersinfofile
 done
done < $ldapuserslistfile

# conversion fron txt to json
jsonfilename="jsontestfile.json"
json="./$jsonfilename"
touch $json

ed -s $ldapusersinfofile  << 'EOF' > $json
v/^cn:\|^sn:\|^givenName:\|^displayName:\|^name:\|^whenCreated:/d
,s/^\(.*[^:]*\): \(.*\)/"\1": "\2"/
g/cn\|sn\|givenName\|displayName\|name\|whenCreated/s/$/,/
,s/^/   /
g/lastLogon/t. \
s/.*/},/g
1,$-1g/}/t. \
s/.*/{/g
0a
{
.
$s/,//
,p
Q
EOF

# copying txt files for tests
cp $ldapuserslistfile /mnt
cp $ldapusersinfofile /mnt

# deleting files
if [ -f $ldapuserslistfile ] ; then rm -f $ldapuserslisfile ; fi
if [ -f $ldapusersinfofile ] ; then rm -f $ldapusersinfofile ; fi

当前JSON输出 #

{
   "cn": "James Rhodes",
   "sn": "Rhodes",
   "givenName": "James",
   "whenCreated": "20220926075852.0Z",
   "displayName": "James Rhodes",
   "name": "James Rhodes",
   "lastLogon": "0"
},
{
   "cn": "T'Chala",
   "givenName": "T'Chala",
   "whenCreated": "20220926081521.0Z",
   "displayName": "T'Chala",
   "name": "T'Chala",
   "lastLogon": "0"
},
{
   "cn": "Stephen Strange",
   "sn": "Strange",
   "givenName": "Stephen",
   "whenCreated": "20220926080942.0Z",
   "displayName": "Stephen Strange",
   "name": "Stephen Strange",
   "lastLogon": "0"
}

期望的JSON格式 #

{
    "users": [
                   {
                    "cn": "James Rhodes",
                    "sn": "Rhodes",
                    "givenName": "James",
                    "whenCreated": "20220926075852.0Z",
                    "displayName": "James Rhodes",
                    "name": "James Rhodes",
                    "lastLogon": "0"
                   },
                   {
                    "cn": "T'Chala",
                    "givenName": "T'Chala",
                    "whenCreated": "20220926081521.0Z",
                    "displayName": "T'Chala",
                    "name": "T'Chala",
                    "lastLogon": "0"
                   },
                   {
                    "cn": "Stephen Strange",
                    "sn": "Strange",
                    "givenName": "Stephen",
                    "whenCreated": "20220926080942.0Z",
                    "displayName": "Stephen Strange",
                    "name": "Stephen Strange",
                    "lastLogon": "0"
                   }
               ]
}

用于读取的PowerShell脚本 #

Clear
$json = Get-Content <pathToFile>\jsontestfile.json -Raw | ConvertFrom-Json

foreach ($user in $json.users){
 echo $user.cn
 echo $user.sn
 echo $user.givenName
 echo "----------"
}

你可以通过拆分转换步骤，先生成用户对象的内容，再手动包裹外层的{"users": []}结构，具体修改如下：

修改后的转换代码 #

将原脚本中从# conversion fron txt to json开始的代码替换为以下内容：

# conversion from txt to json
jsonfilename="jsontestfile.json"
json="./$jsonfilename"
temp_json="./temp_users.json"
touch $temp_json $json

# 先把用户对象转换为临时文件，保留原有ed逻辑
ed -s $ldapusersinfofile  << 'EOF' > $temp_json
v/^cn:\|^sn:\|^givenName:\|^displayName:\|^name:\|^whenCreated:/d
,s/^\(.*[^:]*\): \(.*\)/"\1": "\2"/
g/cn\|sn\|givenName\|displayName\|name\|whenCreated/s/$/,/
,s/^/   /
g/lastLogon/t. \
s/.*/},/g
1,$-1g/}/t. \
s/.*/{/g
0a
{
.
$s/,//
,p
Q
EOF

# 给用户对象添加缩进并包裹外层结构到最终JSON
cat > $json << EOF
{
    "users": [
$(sed 's/^/                   /' $temp_json)
    ]
}
EOF

# 删除临时文件
rm -f $temp_json

额外修正 #

原脚本中有个拼写错误：rm -f $ldapuserslisfile应该改为rm -f $ldapuserslistfile，否则清理文件时会执行失败。

内容的提问来源于stack exchange，提问作者Kubix