shell修改配置文件参数

#! /usr/bin/sh
# Author: ELIATEN

help_info="The script is used to update sdk version in the sdkomatic configuration files which locate in relative directory '../sdkomatic/'.\n
Usage: -a add sdk version, -d delete sdk version\n
Example: ./updateVersion.sh -a 18.2\n
Notes: the sdkomatic cfg file should be located in relative directory '../sdkomatic/' of current script and the valid cfg files' name should start with 'sdkomatic', end with '.cfg', without 'REL'."


check_files()
{

if [[ -z $1 ]]
then
        echo 'Did not find any cfg file matches to "ls ../sdkomatic*.cfg|grep -v REL", exit! Please make sure the cfg files are in relative directory "../sdkomatic/".'
        exit
fi

}


add_version()
{
# function used to add version to sdkomatic configuration files
# 查找文件, 即使找不到也忽略报错
files=`(ls ../sdkomatic/sdkomatic*.cfg|grep -v REL) 2>/dev/null`
check_files $files

for file in $files
    do
    # 获得sdk_versions的值
　　 versions=`sed '/sdk_versions" :/!d; s/.*://' $file`
    # delete the space at begging 去掉字符串首的空格
    versions=$(echo $versions|sed 's/^\\s//')

    if [[ $versions =~ $1 ]]
    then
        echo "no change to "$file
    else
        # add '[' at beginning and delete '],' at last of string  为了后面方便替换在前面添加\,去掉最后的]
        versions="\\"${versions/\]*/}

        # add new version
        new_versions="$versions, $1"
　　　　　# 替换
        sed -i "s/$versions/$new_versions/g" $file
        if [[ $? -eq 0 ]]
        then
            echo "add new version "$1" to "$file" successful"
        else
            echo "add new version "$1" to "$file" filed"
        fi
    fi

    done
}

delete_version()
{
# function used to delete version from sdkomaitc configuration files

files=`(ls ../sdkomatic/sdkomatic*.cfg|grep -v REL) 2>/dev/null`
for file in $files
        do
    versions=`sed '/sdk_versions" :/!d; s/.*://' $file`
    versions=$(echo $versions|sed 's/^\\s//')
    if [[ $versions =~ $1 ]]
        then

　　　　# 为了后面方便替换在前面添加\,去掉最后的]

　　　　 versions="\\"${versions/\]*/}

        # delete the version from version list
        new_versions=$(echo $versions|sed "s/$1",*""\\s*"//g")

          # delete the legacy comma at last if have
        new_versions=$(echo $new_versions|sed 's/,$//g')

        sed -i "s/$versions/$new_versions/g" $file
        if [[ $? -eq 0 ]]
                then
                        echo "delete version "$1" from "$file" successful"
                else
                        echo "delete version "$1" from "$file" filed"
                fi

    else
        echo "no change to "$file

    fi
    done
}


while getopts "a:d:h" opt; do
  case $opt in
    a)
      echo "receive request to add new version: "$OPTARG
      add_version $OPTARG
      ;;
    d)
      echo "receive request to delete version: "$OPTARG
      delete_version $OPTARG
      ;;
    h)
      echo -e $help_info
      ;;
    \?)
      # echo "Invalid option: $OPTARG"
      echo -e $help_info
      ;;
  esac
done

 文件内容：

release_definitions:{"sdk_17_3_sdkomatic" : {
                                 "product" : "EPG_MASTER_25",
                                 "sdk_versions" : [17.3],
                                 "artifactory_branch" : "REL_173",
                                 "build_definitions" : "bd_ssr_17_3",
                                 "test_definitions"  : {
                                    "default" : "td_pduip_17_3",
                                    "drop" : "td_drop_17_3"
                                    }
                                 }
                    }