我有一个名为config.ini的文件，位于say/tmp位置。以下内容。使用sed搜索并替换

[[email protected] ~]$ cat /tmp/config.ini 
[site] 
"name"="Site 0" 
[node] 
"name"="Node 0" 
[systemsecurity] 
[systemsecurity\webserver] 
"level"="high" 
[tacacs] 
"interface"="0" 
"enable"=dword:00000000 
"port"=dword:00000031 
"allowPersistentTCPConnections"=dword:00000001 
[misc] 
"adminsyspassword"="$ADMIN_PASSWD" 
"adminuser"="admin" 
[[email protected] ~]$

而且我需要用/ etc/shadow文件值中存在的值替换“adminsyspassword”。我用awk命令使用下面的shell脚本来获取ini文件的“adminsyspassword”键的新值。

[[email protected] ~]$ cat /tmp/a.sh 
#! /bin/sh 

echo "Fetching the admin encrypted Password from the /etc/shadow file" 
ADMIN_PASSWD=`sudo awk -F: '/admin/ { print $2}' /etc/shadow` 

PARAM_TO_CHANGE='^\(\"adminsyspassword\"\=\)' 
ANYTHING='.*' 
SEARCH_PATTERN=${PARAM_TO_CHANGE}${ANYTHING} 
REPLACE_PATTERN="\"${ADMIN_PASSWD}\"" 
sed 's|$SEARCH_PATTERN|\\1\\$REPLACE_PATTERN|' /tmp/config.ini 
[[email protected] ~]$

假设通过awk命令收到的值存储在ADMIN_PASSWD变量中。并且在调试格式下运行shell脚本时捕获$ ADMIN_PASSWORD的值。

[[email protected] ~]$ bash -x /tmp/a.sh 
+ echo 'Fetching the admin encrypted Password from the /etc/shadow file' 
Fetching the admin encrypted Password from the /etc/shadow file 
++ sudo awk -F: '/admin/ { print $2}' /etc/shadow 
+ ADMIN_PASSWD='$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0' 
+ PARAM_TO_CHANGE='^\(\"adminsyspassword\"\=\)' 
+ ANYTHING='.*' 
+ SEARCH_PATTERN='^\(\"adminsyspassword\"\=\).*' 
+ REPLACE_PATTERN='"$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0"' 
+ echo 'sed '\''s|^\(\"adminsyspassword\"\=\).*|\1\"$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0"|'\'' /tmp/config.ini' 
sed 's|^\(\"adminsyspassword\"\=\).*|\1\"$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0"|' /tmp/config.ini 
+ sed 's|$SEARCH_PATTERN|\\1\\$REPLACE_PATTERN|' /tmp/config.ini 
[site] 
"name"="Site 0" 
[node] 
"name"="Node 0" 
[systemsecurity] 
[systemsecurity\webserver] 
"level"="high" 
[tacacs] 
"interface"="0" 
"enable"=dword:00000000 
"port"=dword:00000031 
"allowPersistentTCPConnections"=dword:00000001 
[misc] 
"adminsyspassword"="$ADMIN_PASSWD" 
"adminpassword"="MD5-71293d5fd498273ca795a80ea9fa73c7" 
"adminuser"="admin" 
[[email protected] ~]$

我不明白为什么sed命令不适用于我。

我哪里去错了？

更新：

我试着在shell脚本中加入echo命令，看看什么是真正过去了。

echo "sed 's|$SEARCH_PATTERN|\\1\\$REPLACE_PATTERN|' /tmp/config.ini" 
sed 's|$SEARCH_PATTERN|\\1\\$REPLACE_PATTERN|' /tmp/config.ini

现在扩大版本正在工作，但如何使它在shell脚本？

[[email protected] ~]$ sed 's|^\(\"adminsyspassword\"\=\).*|\1\"$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0"|' /tmp/config.ini 
[site] 
"name"="Site 0" 
[node] 
"name"="Node 0" 
[systemsecurity] 
[systemsecurity\webserver] 
"level"="high" 
[tacacs] 
"interface"="0" 
"enable"=dword:00000000 
"port"=dword:00000031 
"allowPersistentTCPConnections"=dword:00000001 
[misc] 
"adminsyspassword"="$6$2qeizEuc$082jxqqkpJJPQuUbJD/aO2zA5SSmibjSY7cEDpNxj9eQhKxhO2NT40O9FmQEe1TbN0KWTNbt.9EZxMQXZNo1A0" 
"adminpassword"="MD5-71293d5fd498273ca795a80ea9fa73c7" 
"adminuser"="admin" 
[[email protected] ~]$

感谢您的帮助。我得到的解决方案，需要改变这种格式。

[[email protected] ~]$ cat /tmp/a.sh 
#! /bin/sh 

echo "Fetching the admin encrypted Password from the /etc/shadow file" 
ADMIN_PASSWD=`sudo awk -F: '/admin/ { print $2}' /etc/shadow` 

PARAM_TO_CHANGE='^\(\"adminsyspassword\"\=\)' 
ANYTHING='.*' 
SEARCH_PATTERN=${PARAM_TO_CHANGE}${ANYTHING} 
REPLACE_PATTERN="\"${ADMIN_PASSWD}\"" 

sed "s|$SEARCH_PATTERN|\\1\\$REPLACE_PATTERN|" /tmp/config.ini

来源

2016-06-07 kvivek

的报价来，因为你故意把它们放在那里。 'VARIABLE =“\”VALUE \“”'将引号放入;你似乎想要'VARIABLE =“VALUE”'。 – tripleee

的问题是，调用sed命令时使用单引号防止壳从扩大SEARCH_PATTERN和REPLACE_PATTERN壳变量。这导致这些字符串被直接传递给sed程序。

sed 's|$SEARCH_PATTERN|\\1$REPLACE_PATTERN|' /tmp/config.ini

对于执行参数扩展的shell，应该删除单引号或用双引号替换单引号。我将简化sed命令/tmp/config.ini搜索的文本字符串$ADMIN_PASSWD并与ADMIN_PASSWD shell变量的内容替换它：

sed s/\$ADMIN_PASSWD/$ADMIN_PASSWD/ /tmp/config.ini

来源

2016-06-07 10:27:16

使用sed搜索并替换

更新：

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